List of electrical engineering topics (alphabetical)
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This is an alphabetical list of articles pertaining specifically to
electrical and electronics engineering Electrical engineering is an engineering discipline concerned with the study, design, and application of equipment, devices, and systems which use electricity, electronics, and electromagnetism. It emerged as an identifiable occupation in the l ...
. For a thematic list, please see List of electrical engineering topics. For a broad overview of engineering, see List of engineering topics. For biographies, see List of engineers.


A

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866A The 866 is a mercury vapor half-wave rectifier intended for high-voltage applications. The voltage drop is approximately 15 volts up to 150 Hz. To avoid unwanted shorts the tube must be operated in a vertical position and the filament ...
– * 15 kV AC – * 2D computer graphics – *
3Com 3Com Corporation was an American digital electronics manufacturer best known for its computer network products. The company was co-founded in 1979 by Robert Metcalfe, Howard Charney and others. Bill Krause joined as President in 1981. Metcalfe e ...
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Abrasion (mechanical) Abrasion is the process of scuffing, scratching, wearing down, marring, or rubbing away. It can be intentionally imposed in a controlled process using an abrasive. Abrasion can be an undesirable effect of exposure to normal use or exposure to t ...
– * AC adapter – *
AC power plugs and sockets AC power plugs and sockets connect electric equipment to the alternating current (AC) mains electricity power supply in buildings and at other sites. Electrical plugs and sockets differ from one another in voltage and electric current, current ...
– * AC power – *
AC/AC converter A solid-state AC-to-AC converter converts an AC waveform to another AC waveform, where the output voltage and frequency can be set arbitrarily. Categories Referring to Fig 1, AC-AC converters can be categorized as follows: * Indirect AC-AC (or ...
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AC/DC receiver design An AC/DC receiver design is a style of power supply of vacuum tube radio or television receivers that eliminated the bulky and expensive mains transformer. A side-effect of the design was that the receiver could in principle operate from a DC su ...
– * AC/DC conversion – * Active rectification – * Actuator – *
Adaptive control Adaptive control is the control method used by a controller which must adapt to a controlled system with parameters which vary, or are initially uncertain. For example, as an aircraft flies, its mass will slowly decrease as a result of fuel consumpt ...
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Adjustable-speed drive Motor drive means a system that includes a motor. An adjustable speed motor drive means a system that includes a motor that has multiple operating speeds. A variable speed motor drive is a system that includes a motor and is continuously variabl ...
– * Advanced Z-transform – * Affinity law – * Agbioeletric – *
AIEE The American Institute of Electrical Engineers (AIEE) was a United States-based organization of electrical engineers that existed from 1884 through 1962. On January 1, 1963, it merged with the Institute of Radio Engineers (IRE) to form the Institu ...
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All American Five The term All American Five (abbreviated AA5) is a colloquial name for mass-produced, superheterodyne radio receivers that used five vacuum tubes in their design. These radio sets were designed to receive amplitude modulation (AM) broadcasts in the ...
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Alloy An alloy is a mixture of chemical elements of which at least one is a metal. Unlike chemical compounds with metallic bases, an alloy will retain all the properties of a metal in the resulting material, such as electrical conductivity, ductilit ...
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ALOHAnet ALOHAnet, also known as the ALOHA System, or simply ALOHA, was a pioneering computer networking system developed at the University of Hawaii. ALOHAnet became operational in June 1971, providing the first public demonstration of a wireless packe ...
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Alpha–beta transformation In electrical engineering, the alpha-beta (\alpha\beta\gamma) transformation (also known as the Clarke transformation) is a mathematical transformation employed to simplify the analysis of three-phase circuits. Conceptually it is similar to the ...
– * Altair 8800 – *
Alternating current Alternating current (AC) is an electric current which periodically reverses direction and changes its magnitude continuously with time in contrast to direct current (DC) which flows only in one direction. Alternating current is the form in whic ...
– * Alternator (auto) – *
Alternator synchronization In an alternating current electric power system, synchronization is the process of matching the frequency of a generator or other source to a running network. An AC generator cannot deliver power to an electrical grid unless it is running at the sam ...
-- *
Alternator An alternator is an electrical generator that converts mechanical energy to electrical energy in the form of alternating current. For reasons of cost and simplicity, most alternators use a rotating magnetic field with a stationary armature.Gor ...
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Altitude Altitude or height (also sometimes known as depth) is a distance measurement, usually in the vertical or "up" direction, between a reference datum and a point or object. The exact definition and reference datum varies according to the context ...
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Aluminium smelting Aluminium smelting is the process of extracting aluminium from its oxide, alumina, generally by the Hall-Héroult process. Alumina is extracted from the ore bauxite by means of the Bayer process at an alumina refinery. This is an electrolyti ...
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AIEE The American Institute of Electrical Engineers (AIEE) was a United States-based organization of electrical engineers that existed from 1884 through 1962. On January 1, 1963, it merged with the Institute of Radio Engineers (IRE) to form the Institu ...
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Ammeter An ammeter (abbreviation of ''Ampere meter'') is an instrument used to measure the current in a circuit. Electric currents are measured in amperes (A), hence the name. For direct measurement, the ammeter is connected in series with the circuit ...
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Amorphous metal transformer An amorphous metal transformer (AMT) is a type of energy efficient transformer found on electric grids. The magnetic core of this transformer is made with a ferromagnetic amorphous metal. The typical material (Metglas) is an alloy of iron with boro ...
– * Ampacity – * Ampere – * Ampère's circuital law – *
Ampère's force law In magnetostatics, the force of attraction or repulsion between two current-carrying wires (see first figure below) is often called Ampère's force law. The physical origin of this force is that each wire generates a magnetic field, followin ...
– * Ampère's law – *
Amplidyne An amplidyne is an obsolete electromechanical amplifier invented prior to World War II by Ernst Alexanderson. It consists of an electric motor driving a DC generator. The signal to be amplified is applied to the generator's field winding, and ...
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Amplifier An amplifier, electronic amplifier or (informally) amp is an electronic device that can increase the magnitude of a signal (a time-varying voltage or current). It may increase the power significantly, or its main effect may be to boost t ...
– * Amplitude modulation – *
Analog circuit Analogue electronics ( en-US, analog electronics) are electronic systems with a continuously variable signal, in contrast to digital electronics where signals usually take only two levels. The term "analogue" describes the proportional relat ...
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Analog filter Analogue filters are a basic building block of signal processing much used in electronics. Amongst their many applications are the separation of an audio signal before application to bass, mid-range, and tweeter loudspeakers; the combining and ...
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Analog signal processing Analog signal processing is a type of signal processing conducted on continuous analog signals by some analog means (as opposed to the discrete digital signal processing where the signal processing is carried out by a digital process). "Analog" indi ...
– * Analog signal – *
Analog-to-digital converter In electronics, an analog-to-digital converter (ADC, A/D, or A-to-D) is a system that converts an analog signal, such as a sound picked up by a microphone or light entering a digital camera, into a digital signal. An ADC may also provide ...
– * Annealing (metallurgy) – *
Anode An anode is an electrode of a polarized electrical device through which conventional current enters the device. This contrasts with a cathode, an electrode of the device through which conventional current leaves the device. A common mnemonic ...
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Antenna (radio) In radio engineering, an antenna or aerial is the interface between radio waves propagating through space and electric currents moving in metal conductors, used with a transmitter or receiver (radio), receiver. In Transmission (telecommunicati ...
– * Apollo program – *
Apparent power Apparent may refer to: *Apparent magnitude, a measure of brightness of a celestial body as seen by an observer on Earth *Apparent places, the actual coordinates of stars as seen from Earth *Heir apparent, a person who is first in line of successio ...
– * Apple Computer – *
Arc converter The arc converter, sometimes called the arc transmitter, or Poulsen arc after Danish engineer Valdemar Poulsen who invented it in 1903, was a variety of spark transmitter used in early wireless telegraphy. The arc converter used an electric arc ...
– * Arc furnace – * Arc lamp – * Arc welder – *
Argon Argon is a chemical element with the symbol Ar and atomic number 18. It is in group 18 of the periodic table and is a noble gas. Argon is the third-most abundant gas in Earth's atmosphere, at 0.934% (9340 ppmv). It is more than twice as ...
– * Arithmetic mean – *
Armature (electrical engineering) In electrical engineering, the armature is the winding (or set of windings) of an electric machine which carries alternating current. The armature windings conduct AC even on DC machines, due to the commutator action (which periodically revers ...
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Artificial heart An artificial heart is a device that replaces the heart. Artificial hearts are typically used to bridge the time to heart transplantation, or to permanently replace the heart in the case that a heart transplant (from a deceased human or, exper ...
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Artificial intelligence Artificial intelligence (AI) is intelligence—perceiving, synthesizing, and inferring information—demonstrated by machines, as opposed to intelligence displayed by animals and humans. Example tasks in which this is done include speech r ...
– * Artificial neural networks – *
Artificial pacemaker An artificial cardiac pacemaker (or artificial pacemaker, so as not to be confused with the natural cardiac pacemaker) or pacemaker is a medical device that generates electrical impulses delivered by electrodes to the chambers of the heart eit ...
– * ASTM – *
Asymptotic stability Various types of Stability theory, stability may be discussed for the solutions of differential equations or difference equations describing dynamical systems. The most important type is that concerning the stability of solutions near to a point ...
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Asynchronous circuit Asynchronous circuit (clockless or self-timed circuit) is a sequential digital logic circuit that does not use a global clock circuit or signal generator to synchronize its components. Instead, the components are driven by a handshaking circui ...
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Audio and video connector Audio connectors and video connectors are electrical or optical connectors for carrying audio or video signals. Audio interfaces or video interfaces define physical parameters and interpretation of signals. For digital audio and digital vide ...
– * Audio equipment – *
Audio filter An audio filter is a frequency dependent circuit, working in the audio frequency range, 0 Hz to 20 kHz. Audio filters can amplify (boost), pass or attenuate (cut) some frequency ranges. Many types of filters exist for different audio a ...
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Audio frequency An audio frequency or audible frequency (AF) is a periodic vibration whose frequency is audible to the average human. The SI unit of frequency is the hertz (Hz). It is the property of sound that most determines pitch. The generally accepted ...
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Audio noise reduction Noise reduction is the process of removing noise from a signal. Noise reduction techniques exist for audio and images. Noise reduction algorithms may distort the signal to some degree. Noise rejection is the ability of a circuit to isolate an un ...
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Audio signal processing Audio signal processing is a subfield of signal processing that is concerned with the electronic manipulation of audio signals. Audio signals are electronic representations of sound waves— longitudinal waves which travel through air, consist ...
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Audion tube The Audion was an electronic detecting or amplifying vacuum tube invented by American electrical engineer Lee de Forest in 1906.De Forest patented a number of variations of his detector tubes starting in 1906. The patent that most clearly cover ...
– * Austin transformer – * Automatic gain control – * Automatic transfer switch – *
Automation Automation describes a wide range of technologies that reduce human intervention in processes, namely by predetermining decision criteria, subprocess relationships, and related actions, as well as embodying those predeterminations in machines ...
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Autorecloser In electric power distribution, automatic circuit reclosers (ACRs) are a class of switchgear designed for use on overhead electricity distribution networks to detect and interrupt transient faults. Also known as reclosers or autoreclosers, ACRs a ...
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Autotransformer An autotransformer is an electrical transformer with only one winding. The " auto" (Greek for "self") prefix refers to the single coil acting alone, not to any kind of automatic mechanism. In an autotransformer, portions of the same winding act a ...
– * Availability factor – *
Avalanche diode In electronics, an avalanche diode is a diode (made from silicon or other semiconductor) that is designed to experience avalanche breakdown at a specified reverse bias voltage. The junction of an avalanche diode is designed to prevent current co ...
– * Average rectified value –


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Backward-wave oscillator A backward wave oscillator (BWO), also called carcinotron or backward wave tube, is a vacuum tube that is used to generate microwaves up to the terahertz range. Belonging to the traveling-wave tube family, it is an oscillator with a wide elect ...
– * Balanced line – *
Ball bearing motor A ball bearing motor or ball-race motor consists simply of a small ball- bearing assembly with provision for passing current radially between inner and outer tracks to produce circular motion. Explanation A ball bearing motor is an unusual electric ...
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Balun A balun (from "balanced to unbalanced", originally, but now dated from "balancing unit") is an electrical device that allows balanced and unbalanced lines to be interfaced without disturbing the impedance arrangement of either line. A balun ...
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Band-pass filter A band-pass filter or bandpass filter (BPF) is a device that passes frequencies within a certain range and rejects (attenuates) frequencies outside that range. Description In electronics and signal processing, a filter is usually a two-port ...
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Band-stop filter In signal processing, a band-stop filter or band-rejection filter is a filter that passes most frequencies unaltered, but attenuates those in a specific range to very low levels. It is the opposite of a band-pass filter. A notch filter is a ...
– * Bandwidth (signal processing) – *
Bang–bang control In control theory, a bang–bang controller (2 step or on–off controller), is a feedback controller that switches abruptly between two states. These controllers may be realized in terms of any element that provides hysteresis. They are often use ...
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Barlow's wheel An 1842 diagram of Barlow's wheel Barlow's wheel was an early demonstration of a homopolar motor, designed and built by English mathematician and physicist, Peter Barlow in 1822. It consists of a star-shaped wheel free to turn suspended over a ...
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Bartlett's bisection theorem Bartlett's bisection theorem is an electrical theorem in network analysis (electrical circuits), network analysis attributed to Albert Charles Bartlett. The theorem shows that any symmetrical two-port network can be transformed into a lattice filt ...
– * Base-load power plant – * Battery (electricity) – *
Battery eliminator A battery eliminator is a device powered by an electrical source other than a battery, which then converts the source to a suitable DC voltage that may be used by a second device designed to be powered by batteries. A battery eliminator does awa ...
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Bayer filter A Bayer filter mosaic is a color filter array (CFA) for arranging RGB color filters on a square grid of photosensors. Its particular arrangement of color filters is used in most single-chip digital image sensors used in digital cameras, cam ...
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Beam tetrode A beam tetrode, sometimes called a beam power tube, is a type of vacuum tube or thermionic valve that has two grids and forms the electron stream from the cathode into multiple partially collimated beams to produce a low potential space cha ...
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Beat frequency In acoustics, a beat is an interference pattern between two sounds of slightly different frequencies, ''perceived'' as a periodic variation in volume whose rate is the difference of the two frequencies. With tuning instruments that can produce ...
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Beckman Instruments Beckman Coulter Inc. is a Danaher Corporation company that develops, manufactures, and markets products that simplify, automate and innovate complex biomedical testing. It operates in two industries: Diagnostics and Life Sciences. For more than ...
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Bell Telephone Laboratories Nokia Bell Labs, originally named Bell Telephone Laboratories (1925–1984), then AT&T Bell Laboratories (1984–1996) and Bell Labs Innovations (1996–2007), is an American industrial research and scientific development company owned by mult ...
– * Biasing – *
BIBO stability In signal processing, specifically control theory, bounded-input, bounded-output (BIBO) stability is a form of stability for signals and systems that take inputs. If a system is BIBO stable, then the output will be bounded for every input to the ...
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Bilinear transform The bilinear transform (also known as Tustin's method, after Arnold Tustin) is used in digital signal processing and discrete-time control theory to transform continuous-time system representations to discrete-time and vice versa. The bilinear t ...
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Bimetallic strip A bimetallic strip is used to convert a temperature change into mechanical displacement. The strip consists of two strips of different metals which expand at different rates as they are heated. The different expansions force the flat strip to be ...
– * Biofuel – * Biomass – *
Biomedical engineering Biomedical engineering (BME) or medical engineering is the application of engineering principles and design concepts to medicine and biology for healthcare purposes (e.g., diagnostic or therapeutic). BME is also traditionally logical sciences ...
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Biot–Savart law In physics, specifically electromagnetism, the Biot–Savart law ( or ) is an equation describing the magnetic field generated by a constant electric current. It relates the magnetic field to the magnitude, direction, length, and proximity of the ...
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Bipolar junction transistor A bipolar junction transistor (BJT) is a type of transistor that uses both electrons and electron holes as charge carriers. In contrast, a unipolar transistor, such as a field-effect transistor, uses only one kind of charge carrier. A bipola ...
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Bipolar transistor A bipolar junction transistor (BJT) is a type of transistor that uses both electrons and electron holes as charge carriers. In contrast, a unipolar transistor, such as a field-effect transistor, uses only one kind of charge carrier. A bipolar t ...
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Black start A black start is the process of restoring an electric power station or a part of an electric grid to operation without relying on the external electric power transmission network to recover from a total or partial shutdown.Knight, U.G. ''Power ...
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Blocked rotor test A blocked rotor test is conducted on an induction motor. It is also known as short-circuit test (because it is the mechanical analogy of a transformer short-circuit test), locked rotor test or stalled torque test. From this test, short-circuit cur ...
– * Blu-ray Disc – * Bode plot – * Boolean algebra (logic) – * Boolean algebra (structure) – *
Boost converter A boost converter (step-up converter) is a DC-to-DC power converter that steps up voltage (while stepping down current) from its input (supply) to its output (load). It is a class of switched-mode power supply (SMPS) containing at least two semi ...
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Booster (electric power) A booster was a motor–generator (MG) set used for voltage regulation in direct current (DC) electrical power circuits. The development of alternating current and solid-state devices has rendered it obsolete. Boosters were made in various configur ...
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Bound charge In classical electromagnetism, polarization density (or electric polarization, or simply polarization) is the vector field that expresses the density of permanent or induced electric dipole moments in a dielectric material. When a dielectric is ...
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Braking chopper Braking choppers, sometimes also referred to as braking units, are used in the DC voltage intermediate circuits of frequency converters to control voltage when the load feeds energy back to the intermediate circuit. This arises, for example, when ...
– * Branch circuit – *
Breakdown voltage The breakdown voltage of an insulator is the minimum voltage that causes a portion of an insulator to experience electrical breakdown and become electrically conductive. For diodes, the breakdown voltage is the minimum reverse voltage that mak ...
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Bridge rectifier A diode bridge is a bridge rectifier circuit of four diodes that is used in the process of converting alternating current (AC) from the input terminals to direct current (DC, i.e. fixed polarity) on the output terminals. Its function is to con ...
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Broadcasting Broadcasting is the distribution of audio or video content to a dispersed audience via any electronic mass communications medium, but typically one using the electromagnetic spectrum ( radio waves), in a one-to-many model. Broadcasting beg ...
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Brown, Boveri & Cie Brown, Boveri & Cie. (Brown, Boveri & Company; BBC) was a Swiss group of electrical engineering companies. It was founded in Zürich, in 1891 by Charles Eugene Lancelot Brown and Walter Boveri who worked at the Maschinenfabrik Oerlikon. In 1 ...
– * Brush (electric) – *
Brushed DC electric motor A brushed DC electric motor is an internally commutated electric motor designed to be run from a direct current power source and utilizing an electric brush for contact. Brushed motors were the first commercially important application of elect ...
– * Brushless DC electric motor – *
Buchholz relay In electric power distribution and transmission, a Buchholz relay is a safety device mounted on some oil-filled power transformers and reactors, equipped with an external overhead oil reservoir called a "conservator". The Buchholz relay is use ...
– * Buck converter – *
Buck–boost converter The buck–boost converter is a type of DC-to-DC converter that has an output voltage magnitude that is either greater than or less than the input voltage magnitude. It is equivalent to a flyback converter using a single inductor instead of a tr ...
– * Buck–boost transformer – *
Building codes A building code (also building control or building regulations) is a set of rules that specify the standards for constructed objects such as buildings and non-building structures. Buildings must conform to the code to obtain planning permiss ...
– * Bulb – * Bunker Ramo Corporation – *
Busbar In electric power distribution, a busbar (also bus bar) is a metallic strip or bar, typically housed inside switchgear, panel boards, and busway enclosures for local high current power distribution. They are also used to connect high volt ...
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Bushing (electrical) In electric power, a bushing is a hollow electrical insulator that allows an electrical conductor to pass safely through a conducting barrier such as the case of a transformer or circuit breaker without making electrical contact with it. Bus ...
– * Butterworth filter – *
Buzzer A buzzer or beeper is an audio signaling device, which may be mechanical, electromechanical, or piezoelectric (''piezo'' for short). Typical uses of buzzers and beepers include alarm devices, timers, train and confirmation of user input such as a ...
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Cable Cable may refer to: Mechanical * Nautical cable, an assembly of three or more ropes woven against the weave of the ropes, rendering it virtually waterproof * Wire rope, a type of rope that consists of several strands of metal wire laid into a hel ...
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Cadmium Cadmium is a chemical element with the symbol Cd and atomic number 48. This soft, silvery-white metal is chemically similar to the two other stable metals in group 12, zinc and mercury. Like zinc, it demonstrates oxidation state +2 in most of ...
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Calculus Calculus, originally called infinitesimal calculus or "the calculus of infinitesimals", is the mathematical study of continuous change, in the same way that geometry is the study of shape, and algebra is the study of generalizations of arithm ...
– * Canadian electrical code – *
Canadian Standards Association The CSA Group (formerly the Canadian Standards Association; CSA) is a standards organization which develops standards in 57 areas. CSA publishes standards in print and electronic form, and provides training and advisory services. CSA is composed ...
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Capacitance Capacitance is the capability of a material object or device to store electric charge. It is measured by the change in charge in response to a difference in electric potential, expressed as the ratio of those quantities. Commonly recognized ar ...
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Capacitor voltage transformer Voltage transformers (VT), also called potential transformers (PT), are a parallel-connected type of instrument transformer. They are designed to present a negligible load to the supply being measured and have an accurate voltage ratio and phase ...
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Capacitor A capacitor is a device that stores electrical energy in an electric field by virtue of accumulating electric charges on two close surfaces insulated from each other. It is a passive electronic component with two terminals. The effect of ...
– * Capacitor-input filter – * Capacitors – *
Capacity factor The net capacity factor is the unitless ratio of actual electrical energy output over a given period of time to the theoretical maximum electrical energy output over that period. The theoretical maximum energy output of a given installation is def ...
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Carbon offset A carbon offset is a reduction or removal of emissions of carbon dioxide or other greenhouse gases made in order to compensate for emissions made elsewhere. Offsets are measured in tonnes of carbon dioxide-equivalent (CO2e). One ton of carb ...
– * Carrier current – *
Carrier wave In telecommunications, a carrier wave, carrier signal, or just carrier, is a waveform (usually sinusoidal) that is modulated (modified) with an information-bearing signal for the purpose of conveying information. This carrier wave usually has ...
– * Category 3 cable – *
Category 5e cable Category 5 cable (Cat 5) is a twisted pair cable for computer networks. Since 2001, the variant commonly in use is the Category 5e specification (Cat 5e). The cable standard provides performance of up to 100 MHz and is ...
– * Category 5e – *
Category 6 cable Category 6 cable (Cat 6) is a standardized twisted pair cable for Ethernet and other network physical layers that is backward compatible with the Category 5/5e and Category 3 cable standards. Cat 6 must meet more stringent ...
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Catenary In physics and geometry, a catenary (, ) is the curve that an idealized hanging chain or cable assumes under its own weight when supported only at its ends in a uniform gravitational field. The catenary curve has a U-like shape, superfici ...
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Cathode ray oscilloscope An oscilloscope (informally a scope) is a type of electronic test instrument that graphically displays varying electrical voltages as a two-dimensional plot of one or more signals as a function of time. The main purposes are to display repetiti ...
– * Cathode-ray tube – *
Cathode A cathode is the electrode from which a conventional current leaves a polarized electrical device. This definition can be recalled by using the mnemonic ''CCD'' for ''Cathode Current Departs''. A conventional current describes the direction in wh ...
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Cat's-whisker detector A crystal detector is an obsolete electronic component used in some early 20th century radio receivers that consists of a piece of crystalline mineral which rectifies the alternating current radio signal. It was employed as a detector ( d ...
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CATV Cable television is a system of delivering television programming to consumers via radio frequency (RF) signals transmitted through coaxial cables, or in more recent systems, light pulses through fibre-optic cables. This contrasts with broadc ...
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Cavity magnetron The cavity magnetron is a high-power vacuum tube used in early radar systems and currently in microwave ovens and linear particle accelerators. It generates microwaves using the interaction of a stream of electrons with a magnetic field whi ...
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magnetron The cavity magnetron is a high-power vacuum tube used in early radar systems and currently in microwave ovens and linear particle accelerators. It generates microwaves using the interaction of a stream of electrons with a magnetic field while ...
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CCFL inverter {{Short description, Electrical inverter A CCFL inverter is an electrical inverter that supplies alternating current power to a cold cathode fluorescent lamp (CCFL). CCFLs are often used as inexpensive light units in electrical devices that are p ...
– * CD – *
Cegelec Cegelec is a French engineering company specialized in electrical infrastructure, HVAC, information technology, nuclear energy development, transport infrastructure, robotics and offering both public and private services. Cegelec was officiall ...
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Cell energy Cellular respiration is the process by which biological fuels are oxidised in the presence of an inorganic electron acceptor such as oxygen to produce large amounts of energy, to drive the bulk production of ATP. Cellular respiration may be des ...
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Center tap In electronics, a center tap (CT) is a contact made to a point halfway along a winding of a transformer or inductor, or along the element of a resistor or a potentiometer. Taps are sometimes used on inductors for the coupling of signals, and ...
– * Ceramic resonator – *
Charactron Charactron was a U.S. registered trademark (number 0585950, 23 February 1954) of Consolidated Vultee Aircraft Corporation (Convair) for its shaped electron beam cathode ray tube. Charactron CRTs performed functions of both a display device and a ...
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Charge pump A charge pump is a kind of DC-to-DC converter that uses capacitors for energetic charge storage to raise or lower voltage. Charge-pump circuits are capable of high efficiencies, sometimes as high as 90–95%, while being electrically simple c ...
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Charge transfer switch A charge transfer switch OR CTS charge pump is a charge pump that offers better low-voltage performance and "a better voltage pumping gain and a higher output voltage" than previous charge pumps such as the Dickson charge pump. See also * Charg ...
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Charge-coupled device A charge-coupled device (CCD) is an integrated circuit containing an array of linked, or coupled, capacitors. Under the control of an external circuit, each capacitor can transfer its electric charge to a neighboring capacitor. CCD sensors are a ...
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CHAYKA Chayka (russian: Чайка, lit. "seagull") also known as Radioteknicheskaya Systema Dalyoloiy Navigatsii abbreviated as RSDN (lit. Russian Hyperbolic Radio Navigation System) is a Russian terrestrial radio navigation system, similar to Loran ...
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Chebyshev filter Chebyshev filters are analog or digital filters that have a steeper roll-off than Butterworth filters, and have either passband ripple (type I) or stopband ripple (type II). Chebyshev filters have the property that they minimize the error betwee ...
– * Chemistry – *
Choke (electronics) In electronics, a choke is an inductor used to block higher-frequency alternating currents while passing direct current (DC) and lower-frequencies alternating current (AC) in an electrical circuit. A choke usually consists of a coil of insulated ...
– * Chopper (electronic) – *
Circle diagram First conceived by A.heyland in 1894 and B.A. Behrend in 1895, the circle diagram is the graphical representation of the performance of the electrical machine drawn in terms of the locus of the machine's input voltage and current. The circle di ...
– * Circuit breaker panel – *
Circuit breaker A circuit breaker is an electrical safety device designed to protect an electrical circuit from damage caused by an overcurrent or short circuit. Its basic function is to interrupt current flow to protect equipment and to prevent the ris ...
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Circuit theory Circuit may refer to: Science and technology Electrical engineering * Electrical circuit, a complete electrical network with a closed-loop giving a return path for current ** Analog circuit, uses continuous signal levels ** Balanced circui ...
– * Circuit Total Limitation (CTL) – *
Clamp meter In electrical and electronic engineering, a current clamp, also known as current probe, is an electrical device with jaws which open to allow clamping around an electrical conductor. This allows measurement of the current in a conductor without t ...
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Clapp oscillator The Clapp oscillator or Gouriet oscillator is an LC electronic oscillator that uses a particular combination of an inductor and three capacitors to set the oscillator's frequency. LC oscillators use a transistor (or vacuum tube or other gain eleme ...
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Class of accuracy in electrical measurements In electrical engineering class of accuracy is a figure which represents the error tolerance of a measuring device. Class of accuracy Measuring devices are labelled for the class of accuracy. This figure is the percentage of the inherent error ...
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Closed-loop controller Control theory is a field of mathematics that deals with the control of dynamical systems in engineered processes and machines. The objective is to develop a model or algorithm governing the application of system inputs to drive the system to a ...
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Coal Coal is a combustible black or brownish-black sedimentary rock, formed as rock strata called coal seams. Coal is mostly carbon with variable amounts of other elements, chiefly hydrogen, sulfur, oxygen, and nitrogen. Coal is formed when ...
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Coax cable Coaxial cable, or coax (pronounced ) is a type of electrical cable consisting of an inner conductor surrounded by a concentric conducting shield, with the two separated by a dielectric ( insulating material); many coaxial cables also have a p ...
– * Coaxial cable – *
Cochlear implant A cochlear implant (CI) is a surgically implanted neuroprosthesis that provides a person who has moderate-to-profound sensorineural hearing loss with sound perception. With the help of therapy, cochlear implants may allow for improved speech unde ...
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Cockcroft–Walton generator The Cockcroft–Walton (CW) generator, or multiplier, is an electric circuit that generates a high DC voltage from a low-voltage AC or pulsing DC input. It was named after the British and Irish physicists John Douglas Cockcroft and Ernest Th ...
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Cogeneration Cogeneration or combined heat and power (CHP) is the use of a heat engine or power station to generate electricity and useful heat at the same time. Cogeneration is a more efficient use of fuel or heat, because otherwise- wasted heat from elec ...
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Cold cathode A cold cathode is a cathode that is not electrically heated by a filament.A negatively charged electrode emits electrons or is the positively charged terminal. For more, see field emission. A cathode may be considered "cold" if it emits more el ...
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Cold work Cold is the presence of low temperature, especially in the atmosphere. In common usage, cold is often a subjective perception. A lower bound to temperature is absolute zero, defined as 0.00K on the Kelvin scale, an absolute thermodynamic ...
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Colossus (computer) Colossus was a set of computers developed by British codebreakers in the years 1943–1945 to help in the cryptanalysis of the Lorenz cipher. Colossus used thermionic valves (vacuum tubes) to perform Boolean and counting operations. Colossus ...
– * Combined cycle – * Commercial off-the-shelf – *
Communication channel A communication channel refers either to a physical transmission medium such as a wire, or to a logical connection over a multiplexed medium such as a radio channel in telecommunications and computer networking. A channel is used for informa ...
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Communication system A communications system or communication system is a collection of individual telecommunications networks, transmission systems, relay stations, tributary stations, and terminal equipment usually capable of interconnection and interoperat ...
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Communications satellite A communications satellite is an artificial satellite that relays and amplifies radio telecommunication signals via a transponder; it creates a communication channel between a source transmitter and a receiver at different locations on Earth ...
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Communications server {{unreferenced, date=November 2011 Communications servers are open, standards-based computing systems that operate as a carrier-grade common platform for a wide range of communications applications and allow equipment providers to add value at man ...
– * Commutation cell – * Commutator (electric) – *
Compact fluorescent lamp A compact fluorescent lamp (CFL), also called compact fluorescent light, energy-saving light and compact fluorescent tube, is a fluorescent lamp designed to replace an incandescent light bulb; some types fit into light fixtures designed for inca ...
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Compactron Compactrons are a type of vacuum tube, thermionic valve, or vacuum tube, which contain multiple electrode structures packed into a single enclosure. They were designed to compete with early transistor electronics and were used in televisions, radi ...
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Compensation winding A compensation winding in a DC shunt motor is a winding in the field pole face plate that carries armature current to reduce stator field distortion. Its purpose is to reduce brush arcing and erosion in DC motors that are operated with weak f ...
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Complex conjugate In mathematics, the complex conjugate of a complex number is the number with an equal real part and an imaginary part equal in magnitude but opposite in sign. That is, (if a and b are real, then) the complex conjugate of a + bi is equal to a - ...
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Complex number In mathematics, a complex number is an element of a number system that extends the real numbers with a specific element denoted , called the imaginary unit and satisfying the equation i^= -1; every complex number can be expressed in the fo ...
– * Complex systems – * Computational biology – *
Computational Intelligence The expression computational intelligence (CI) usually refers to the ability of a computer to learn a specific task from data or experimental observation. Even though it is commonly considered a synonym of soft computing, there is still no c ...
– * Computed tomography – * Computer engineering – * Computer hardware – *
Computer literacy Computer literacy is defined as the knowledge and ability to use computers and related technology efficiently, with skill levels ranging from elementary use to computer programming and advanced problem solving. Computer literacy can also refer ...
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Computer programming Computer programming is the process of performing a particular computation (or more generally, accomplishing a specific computing result), usually by designing and building an executable computer program. Programming involves tasks such as anal ...
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Computer science Computer science is the study of computation, automation, and information. Computer science spans theoretical disciplines (such as algorithms, theory of computation, information theory, and automation) to practical disciplines (includi ...
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Computer system A computer is a machine that can be programmed to carry out sequences of arithmetic or logical operations ( computation) automatically. Modern digital electronic computers can perform generic sets of operations known as programs. These prog ...
– * Computer – * Computer-aided design – * Computers – * Concentric – * Conduction band – *
Constant k filter Constant k filters, also k-type filters, are a type of electronic filter designed using the image method. They are the original and simplest filters produced by this methodology and consist of a ladder network of identical sections of passive co ...
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Constitutive equation In physics and engineering, a constitutive equation or constitutive relation is a relation between two physical quantities (especially kinetic quantities as related to kinematic quantities) that is specific to a material or substance, and app ...
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Consumer electronics Consumer electronics or home electronics are electronic ( analog or digital) equipment intended for everyday use, typically in private homes. Consumer electronics include devices used for entertainment, communications and recreation. Usuall ...
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Contactor :''In semiconductor testing, contactors can also be referred to as the specialized socket that connects the device under test.'' :''In process industries, a contactor is a vessel where two streams interact, for example, air and liquid. See Gas ...
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Continuous Fourier transform A Fourier transform (FT) is a mathematical transform that decomposes functions into frequency components, which are represented by the output of the transform as a function of frequency. Most commonly functions of time or space are transformed, ...
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Continuous signal In mathematical dynamics, discrete time and continuous time are two alternative frameworks within which variables that evolve over time are modeled. Discrete time Discrete time views values of variables as occurring at distinct, separate "po ...
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Control engineering Control engineering or control systems engineering is an engineering discipline that deals with control systems, applying control theory to design equipment and systems with desired behaviors in control environments. The discipline of controls o ...
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Control systems A control system manages, commands, directs, or regulates the behavior of other devices or systems using control loops. It can range from a single home heating controller using a thermostat controlling a domestic boiler to large industrial c ...
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Control theory Control theory is a field of mathematics that deals with the control of dynamical systems in engineered processes and machines. The objective is to develop a model or algorithm governing the application of system inputs to drive the system to a ...
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Controllability Controllability is an important property of a control system, and the controllability property plays a crucial role in many control problems, such as stabilization of unstable systems by feedback, or optimal control. Controllability and observabi ...
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Controller (control theory) Control theory is a field of mathematics that deals with the control of dynamical systems in engineered processes and machines. The objective is to develop a model or algorithm governing the application of system inputs to drive the system to a ...
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Cooling tower A cooling tower is a device that rejects waste heat to the atmosphere through the cooling of a coolant stream, usually a water stream to a lower temperature. Cooling towers may either use the evaporation of water to remove process heat an ...
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Copper cable certification In copper twisted pair wire networks, copper cable certification is achieved through a thorough series of tests in accordance with Telecommunications Industry Association (TIA) or International Organization for Standardization (ISO) standards. Th ...
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Copper loss Copper is a chemical element with the symbol Cu (from la, cuprum) and atomic number 29. It is a soft, malleable, and ductile metal with very high thermal and electrical conductivity. A freshly exposed surface of pure copper has a pinkish-or ...
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Copper(I) oxide Copper(I) oxide or cuprous oxide is the inorganic compound with the formula Cu2O. It is one of the principal oxides of copper, the other being or copper(II) oxide or cupric oxide (CuO). This red-coloured solid is a component of some antifoulin ...
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Copper Copper is a chemical element with the symbol Cu (from la, cuprum) and atomic number 29. It is a soft, malleable, and ductile metal with very high thermal and electrical conductivity. A freshly exposed surface of pure copper has a pinkis ...
– * Copper-clad aluminum – *
Copper-clad steel Copper-clad steel (CCS), also known as copper-covered steel or the trademarked name Copperweld is a bi-metallic product, mainly used in the wire industry that combines the high mechanical resistance of steel with the conductivity and corrosion re ...
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Cornell University Cornell University is a private statutory land-grant research university based in Ithaca, New York. It is a member of the Ivy League. Founded in 1865 by Ezra Cornell and Andrew Dickson White, Cornell was founded with the intention to tea ...
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Corona ring A corona ring, more correctly referred to as an anti-corona ring, is a toroid of conductive material, usually metal, which is attached to a terminal or other irregular hardware piece of high voltage equipment. The purpose of the corona ring is t ...
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Corrosion Corrosion is a natural process that converts a refined metal into a more chemically stable oxide. It is the gradual deterioration of materials (usually a metal) by chemical or electrochemical reaction with their environment. Corrosion engi ...
– * Coulomb – *
Coulomb's law Coulomb's inverse-square law, or simply Coulomb's law, is an experimental law of physics that quantifies the amount of force between two stationary, electrically charged particles. The electric force between charged bodies at rest is convention ...
– * CPU – *
Creep (deformation) In materials science, creep (sometimes called cold flow) is the tendency of a solid material to move slowly or deform permanently under the influence of persistent mechanical stresses. It can occur as a result of long-term exposure to high leve ...
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Crest factor Crest or CREST may refer to: Buildings *The Crest (Huntington, New York), a historic house in Suffolk County, New York *"The Crest", an alternate name for 63 Wall Street, in Manhattan, New York * Crest Castle (Château Du Crest), Jussy, Switzer ...
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Crossed-field amplifier A crossed-field amplifier (CFA) is a specialized vacuum tube, first introduced in the mid-1950s and frequently used as a microwave amplifier in very-high-power transmitters. Raytheon engineer William C. Brown's work to adapt magnetron principles ...
– * Crosstalk – *
Cruise control Cruise control (also known as speed control, cruise command, autocruise, or tempomat) is a system that automatically controls the speed of a motor vehicle. The system is a servomechanism that takes over the throttle of the car to maintain a s ...
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Crystal oscillator A crystal oscillator is an electronic oscillator circuit that uses a piezoelectric crystal as a frequency-selective element. The oscillator frequency is often used to keep track of time, as in quartz wristwatches, to provide a stable clock ...
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Ćuk converter The Ćuk converter (pronounced ''chook''; sometimes incorrectly spelled Cuk, Čuk or Cúk) is a type of buck-boost converter with low ripple current. A Ćuk converter can be seen as a combination of boost converter and buck converter, having o ...
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Current (electricity) An electric current is a stream of charged particles, such as electrons or ions, moving through an electrical conductor or space. It is measured as the net rate of flow of electric charge through a surface or into a control volume. The moving p ...
– * Current density – *
Current division Currents, Current or The Current may refer to: Science and technology * Current (fluid), the flow of a liquid or a gas ** Air current, a flow of air ** Ocean current, a current in the ocean *** Rip current, a kind of water current ** Current (stre ...
– * Current source inverter – *
Current source A current source is an electronic circuit that delivers or absorbs an electric current which is independent of the voltage across it. A current source is the dual of a voltage source. The term ''current sink'' is sometimes used for sources fed ...
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Current transformer A current transformer (CT) is a type of transformer that is used to reduce or multiply an alternating current (AC). It produces a current in its secondary which is proportional to the current in its primary. Current transformers, along with volt ...
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Current-to-voltage converter In electronics, a transimpedance amplifier (TIA) is a current to voltage converter, almost exclusively implemented with one or more operational amplifiers. The TIA can be used to amplify the current output of Geiger–Müller tubes, photo multipl ...
– * Cybernetics – *
Cyber-physical system A cyber-physical system (CPS) or intelligent system is a computer system in which a Mechanism (engineering), mechanism is controlled or monitored by computer-based algorithms. In cyber-physical systems, physical and software components are deeply ...
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Cycloconverter A cycloconverter (CCV) or a cycloinverter converts a constant amplitude, constant frequency AC waveform to another AC waveform of a lower frequency by synthesizing the output waveform from segments of the AC supply without an intermediate DC lin ...
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Cylinder (geometry) A cylinder (from ) has traditionally been a three-dimensional solid, one of the most basic of curvilinear geometric shapes. In elementary geometry, it is considered a prism with a circle as its base. A cylinder may also be defined as an infi ...
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D

* Damping ratio – *
Darlington transistor In electronics, a multi-transistor configuration called the Darlington configuration (commonly called a Darlington pair) is a circuit consisting of two bipolar transistors with the emitter of one transistor connected to the base of the other, su ...
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Darmstadt University of Technology Darmstadt () is a city in the state of Hesse in Germany, located in the southern part of the Rhine-Main-Area (Frankfurt Metropolitan Region). Darmstadt has around 160,000 inhabitants, making it the fourth largest city in the state of Hesse a ...
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Data compression In information theory, data compression, source coding, or bit-rate reduction is the process of encoding information using fewer bits than the original representation. Any particular compression is either lossy or lossless. Lossless compressio ...
– * Data networks – * DC injection braking – *
DC-to-DC converter A DC-to-DC converter is an electronic circuit or electromechanical device that converts a source of direct current (DC) from one voltage level to another. It is a type of electric power converter. Power levels range from very low (small batteries) ...
– * Decision tree – *
Deformation (mechanics) In physics, deformation is the continuum mechanics transformation of a body from a ''reference'' configuration to a ''current'' configuration. A configuration is a set containing the positions of all particles of the body. A deformation can ...
– * Delay line (disambiguation) – *
Delco Electronics Delco Electronics Corporation was the automotive electronics design and manufacturing subsidiary of General Motors based in Kokomo, Indiana, that manufactured ''Delco'' Automobile radios and other electric products found in GM cars. In 1972, Gene ...
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Delta-wye transformer A delta-wye transformer is a type of three-phase electric power transformer design that employs delta-connected windings on its primary and wye/star connected windings on its secondary. A neutral wire can be provided on wye output side. It ca ...
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Demand factor In telecommunication, electronics and the electrical power industry, the term demand factor is used to refer to the fractional amount of some quantity being used relative to the maximum amount that could be used by the same system. The demand facto ...
– * Demand response – * Demodulation – *
Describing function In control systems theory, the describing function (DF) method, developed by Nikolay Mitrofanovich Krylov and Nikolay Bogoliubov in the 1930s, and extended by Ralph Kochenburger is an approximate procedure for analyzing certain nonlinear control ...
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Design A design is a plan or specification for the construction of an object or system or for the implementation of an activity or process or the result of that plan or specification in the form of a prototype, product, or process. The verb ''to design' ...
– * Desktop computer – *
Detector (radio) In radio, a detector is a device or circuit that extracts information from a modulated radio frequency current or voltage. The term dates from the first three decades of radio (1888-1918). Unlike modern radio stations which transmit sound (an audi ...
– * DIAC – *
Dielectric In electromagnetism, a dielectric (or dielectric medium) is an electrical insulator that can be polarised by an applied electric field. When a dielectric material is placed in an electric field, electric charges do not flow through the mate ...
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Differential (mathematics) In mathematics, differential refers to several related notions derived from the early days of calculus, put on a rigorous footing, such as infinitesimal differences and the derivatives of functions. The term is used in various branches of mathe ...
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Digital audio broadcasting Digital radio is the use of digital technology to transmit or receive across the radio spectrum. Digital transmission by radio waves includes digital broadcasting, and especially digital audio radio services. Types In digital broadcasting sy ...
– * Digital circuit – *
Digital computers A computer is a machine that can be programmed to carry out sequences of arithmetic or logical operations (computation) automatically. Modern digital electronic computers can perform generic sets of operations known as programs. These programs ...
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Digital control Digital control is a branch of control theory that uses digital computers to act as system controllers. Depending on the requirements, a digital control system can take the form of a microcontroller to an ASIC to a standard desktop computer. ...
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Digital Equipment Corporation Digital Equipment Corporation (DEC ), using the trademark Digital, was a major American company in the computer industry from the 1960s to the 1990s. The company was co-founded by Ken Olsen and Harlan Anderson in 1957. Olsen was president un ...
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Digital filter In signal processing, a digital filter is a system that performs mathematical operations on a sampled, discrete-time signal to reduce or enhance certain aspects of that signal. This is in contrast to the other major type of electronic filter, t ...
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Digital image processing Digital image processing is the use of a digital computer to process digital images through an algorithm. As a subcategory or field of digital signal processing, digital image processing has many advantages over analog image processing. It allo ...
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Digital micromirror device The digital micromirror device, or DMD, is the microoptoelectromechanical system (MOEMS) that is the core of the trademarked DLP projection technology from Texas Instruments (TI). Texas Instrument's DMD was created by solid-state physicist and ...
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Digital protective relay In utility and industrial electric power transmission and distribution systems, a numerical relay is a computer-based system with software-based protection algorithms for the detection of electrical faults. Such relays are also termed as micropr ...
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Digital signal controller A digital signal controller (DSC) is a hybrid of microcontrollers and digital signal processors (DSPs). Like microcontrollers, DSCs have fast interrupt responses, offer control-oriented peripherals like PWMs and watchdog timers, and are usually ...
– * Digital signal processing – *
Digital television Digital television (DTV) is the transmission of television signals using digital encoding, in contrast to the earlier analog television technology which used analog signals. At the time of its development it was considered an innovative adva ...
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Digital-to-analog converter In electronics, a digital-to-analog converter (DAC, D/A, D2A, or D-to-A) is a system that converts a digital signal into an analog signal. An analog-to-digital converter (ADC) performs the reverse function. There are several DAC archit ...
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Diode bridge A diode bridge is a bridge rectifier circuit of four diodes that is used in the process of converting alternating current (AC) from the input terminals to direct current (DC, i.e. fixed polarity) on the output terminals. Its function is to con ...
– * Diode – *
Direct current Direct current (DC) is one-directional flow of electric charge. An electrochemical cell is a prime example of DC power. Direct current may flow through a conductor such as a wire, but can also flow through semiconductors, insulators, or eve ...
– * Direct on line starter-- *
Direct torque control Direct torque control (DTC) is one method used in variable-frequency drives to control the torque (and thus finally the speed) of three-phase electric motor, AC electric motors. This involves Calculation, calculating an estimate of the motor's magn ...
– * Discrete cosine transform – *
Discrete Fourier transform In mathematics, the discrete Fourier transform (DFT) converts a finite sequence of equally-spaced samples of a function into a same-length sequence of equally-spaced samples of the discrete-time Fourier transform (DTFT), which is a comple ...
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Discrete signal In mathematical dynamics, discrete time and continuous time are two alternative frameworks within which variables that evolve over time are modeled. Discrete time Discrete time views values of variables as occurring at distinct, separate "po ...
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Displacement current In electromagnetism, displacement current density is the quantity appearing in Maxwell's equations that is defined in terms of the rate of change of , the electric displacement field. Displacement current density has the same units as electric ...
– * Display device – *
Dissipation In thermodynamics, dissipation is the result of an irreversible process that takes place in homogeneous thermodynamic systems. In a dissipative process, energy ( internal, bulk flow kinetic, or system potential) transforms from an initial form to ...
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Dissolved gas analysis Dissolved gas analysis (DGA) is an examination of electrical transformer oil contaminants. Insulating materials within electrical equipment liberate gases as they slowly break down over time. The composition and distribution of these dissolved gas ...
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Distributed control system A distributed control system (DCS) is a computerised control system for a process or plant usually with many control loops, in which autonomous controllers are distributed throughout the system, but there is no central operator supervisory contro ...
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Distributed-element model : ''This article is an example from the domain of electrical systems, which is a special case of the more general distributed-parameter systems.'' In electrical engineering, the distributed-element model or transmission-line model of electrical ...
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Distributed generation Distributed generation, also distributed energy, on-site generation (OSG), or district/decentralized energy, is electrical generation and storage performed by a variety of small, grid-connected or distribution system-connected devices referred to ...
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Distribution board A distribution board (also known as panelboard, breaker panel, electric panel, DB board or DB box) is a component of an electricity supply system that divides an electrical power feed into subsidiary circuits while providing a protective fuse ...
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Distribution transformer Single-phase distribution transformer in Canada A distribution transformer or service transformer is a transformer that provides the final voltage transformation in the electric power distribution system, stepping down the voltage used in the di ...
– * Dolby – *
Dot convention In electrical engineering, dot marking convention, or alphanumeric marking convention, or both, can be used to denote the same relative instantaneous polarity of two mutually inductive components such as between transformer windings. These ...
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Doubly fed electric machine Doubly-fed electric machines also slip-ring generators are electric motors or electric generators, where both the field magnet windings and armature windings are separately connected to equipment outside the machine. By feeding adjustable freque ...
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Downsampling In digital signal processing, downsampling, compression, and decimation are terms associated with the process of ''resampling'' in a multi-rate digital signal processing system. Both ''downsampling'' and ''decimation'' can be synonymous with ''com ...
– * Dqo transformation – *
Droop speed control Droop speed control is a control mode used for AC electrical power generators, whereby the power output of a generator reduces as the line frequency increases. It is commonly used as the speed control mode of the governor of a prime mover driving a ...
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Dual control theory Dual control theory is a branch of control theory that deals with the control of systems whose characteristics are initially unknown. It is called ''dual'' because in controlling such a system the controller's objectives are twofold: * (1) Action ...
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Dual loop Dual-loop is a method of electrical circuit termination used in electronic security applications, particularly modern burglar alarm, intruder alarms. It is called 'dual-loop' because two circuits (alarm and anti-tamper) are combined into one using r ...
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Ductility Ductility is a mechanical property commonly described as a material's amenability to drawing (e.g. into wire). In materials science, ductility is defined by the degree to which a material can sustain plastic deformation under tensile str ...
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DVD player A DVD player is a device that plays DVDs produced under both the DVD-Video and DVD-Audio technical standards, two different and incompatible standards. Some DVD players will also play audio CDs. DVD players are connected to a television to ...
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DVD The DVD (common abbreviation for Digital Video Disc or Digital Versatile Disc) is a digital optical disc data storage format. It was invented and developed in 1995 and first released on November 1, 1996, in Japan. The medium can store any kind ...
– * Dynamic braking – *
Dynamic demand (electric power) Dynamic Demand is the name of a semi-passive technology to support demand response by adjusting the load demand on an electrical power grid. It is also the name of an independent not-for-profit organization in the UK supported by a charitable gra ...
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Dynamic programming Dynamic programming is both a mathematical optimization method and a computer programming method. The method was developed by Richard Bellman in the 1950s and has found applications in numerous fields, from aerospace engineering to economics. ...
– * Dynamic random-access memory – *
Dynamic system In mathematics, a dynamical system is a system in which a function describes the time dependence of a point in an ambient space. Examples include the mathematical models that describe the swinging of a clock pendulum, the flow of water in a ...
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Dynamo "Dynamo Electric Machine" (end view, partly section, ) A dynamo is an electrical generator that creates direct current using a commutator. Dynamos were the first electrical generators capable of delivering power for industry, and the foundati ...
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E

* Earth-leakage circuit breaker – *
Earth potential rise In electrical engineering, earth potential rise (EPR) also called ground potential rise (GPR) occurs when a large current flows to earth through an earth grid impedance. The potential relative to a distant point on the Earth is highest at the poi ...
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Earth Earth is the third planet from the Sun and the only astronomical object known to harbor life. While large volumes of water can be found throughout the Solar System, only Earth sustains liquid surface water. About 71% of Earth's surfa ...
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Earthing system An earthing system (UK and IEC) or grounding system (US) connects specific parts of an electric power system with the ground, typically the Earth's conductive surface, for safety and functional purposes. The choice of earthing system can affect ...
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Ebers-Moll A bipolar junction transistor (BJT) is a type of transistor that uses both electrons and electron holes as charge carriers. In contrast, a unipolar transistor, such as a field-effect transistor, uses only one kind of charge carrier. A bipolar ...
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Ecotax An environmental tax, ecotax (short for ecological taxation), or green tax is a tax levied on activities which are considered to be harmful to the environment and is intended to promote environmentally friendly activities via economic incentives. ...
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Eddy current Eddy currents (also called Foucault's currents) are loops of electrical current induced within conductors by a changing magnetic field in the conductor according to Faraday's law of induction or by the relative motion of a conductor in a magnet ...
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Edge detection Edge detection includes a variety of mathematical methods that aim at identifying edges, curves in a digital image at which the image brightness changes sharply or, more formally, has discontinuities. The same problem of finding discontinuitie ...
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Edison effect Thermionic emission is the liberation of electrons from an electrode by virtue of its temperature (releasing of energy supplied by heat). This occurs because the thermal energy given to the charge carrier overcomes the work function of the mate ...
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Edison Pioneer The Edison Pioneers was an organization composed of former employees of Thomas Edison who had worked with the inventor in his early years. Membership was limited to people who had worked closely with Edison before 1885. On February 11, 1918, the Ed ...
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Eigenvalues and eigenvectors In linear algebra, an eigenvector () or characteristic vector of a linear transformation is a nonzero vector that changes at most by a scalar factor when that linear transformation is applied to it. The corresponding eigenvalue, often denote ...
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Electret An electret (formed as a portmanteau of ''electr-'' from "electricity" and ''-et'' from "magnet") is a dielectric material that has a quasi-permanent electric charge or dipole polarization (electrostatics), polarisation. An electret generates int ...
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Electric arc An electric arc, or arc discharge, is an electrical breakdown of a gas that produces a prolonged electrical discharge. The current through a normally nonconductive medium such as air produces a plasma; the plasma may produce visible light. An ...
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Electric charge Electric charge is the physical property of matter that causes charged matter to experience a force when placed in an electromagnetic field. Electric charge can be ''positive'' or ''negative'' (commonly carried by protons and electrons respe ...
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Electric circuit An electrical network is an interconnection of electrical components (e.g., batteries, resistors, inductors, capacitors, switches, transistors) or a model of such an interconnection, consisting of electrical elements (e.g., voltage sources, ...
– * Electric current – *
Electric displacement field In physics, the electric displacement field (denoted by D) or electric induction is a vector field that appears in Maxwell's equations. It accounts for the effects of free and bound charge within materials. "D" stands for "displacement", as in ...
– * Electric distribution systems – *
Electric field gradient In atomic, molecular, and solid-state physics, the electric field gradient (EFG) measures the rate of change of the electric field at an atomic nucleus generated by the electronic charge distribution and the other nuclei. The EFG couples with t ...
– * Electric field – * Electric generator – *
Electric motor An electric motor is an electrical machine that converts electrical energy into mechanical energy. Most electric motors operate through the interaction between the motor's magnetic field and electric current in a wire winding to generate for ...
– * Electric multiple unit – *
Electric potential The electric potential (also called the ''electric field potential'', potential drop, the electrostatic potential) is defined as the amount of work energy needed to move a unit of electric charge from a reference point to the specific point in ...
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Electric power conversion In all fields of electrical engineering, power conversion is the process of converting electric energy from one form to another. A power converter is an electrical or electro-mechanical device for converting electrical energy. A power converter c ...
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Electric power distribution Electric power distribution is the final stage in the delivery of electric power; it carries electricity from the transmission system to individual consumers. Distribution substations connect to the transmission system and lower the transmissi ...
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Electric Power Research Institute EPRI, is an American independent, nonprofit organization that conducts research and development related to the generation, delivery, and use of electricity to help address challenges in the energy industry, including reliability, efficiency, affo ...
– * Electric power transmission – * Electric power – * Electric shock – * Electrical circuit – *
Electrical code {{Electrical Wiring Sidebar An electrical code is a set of regulations for the design and installation of electrical wiring in a building. The intention of a code is to provide standards to ensure electrical wiring systems that are safe for peopl ...
– * Electrical conductivity – *
Electrical conductor In physics and electrical engineering, a conductor is an object or type of material that allows the flow of charge (electric current) in one or more directions. Materials made of metal are common electrical conductors. Electric current is gene ...
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Electrical contact An electrical contact is an electrical circuit component found in electrical switches, relays, connectors and circuit breakers. Each contact is a piece of electrically conductive material, typically metal. When a pair of contacts touch, they c ...
– * Electrical discharge machining (EDM) – *
Electrical element Electrical elements are conceptual abstractions representing idealized electrical components, such as resistors, capacitors, and inductors, used in the circuit analysis, analysis of electrical networks. All electrical networks can be analyzed as ...
– * Electrical engineering – * Electrical equipment – *
Electrical generator In electricity generation, a generator is a device that converts motive power (mechanical energy) or fuel-based power ( chemical energy) into electric power for use in an external circuit. Sources of mechanical energy include steam turbines, g ...
– * Electrical grid – *
Electrical impedance In electrical engineering, impedance is the opposition to alternating current presented by the combined effect of resistance and reactance in a circuit. Quantitatively, the impedance of a two-terminal circuit element is the ratio of the com ...
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Electrical insulation paper Electrical insulation papers are paper types that are used as electrical insulation in many applications due to pure cellulose having outstanding electrical properties. Cellulose is a good insulator and is also polar, having a dielectric constan ...
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Electrical insulation An electrical insulator is a material in which electric current does not flow freely. The atoms of the insulator have tightly bound electrons which cannot readily move. Other materials—semiconductors and conductors—conduct electric current ...
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Electrical load An electrical load is an electrical component or portion of a circuit that consumes (active) electric power, such as electrical appliances and lights inside the home. The term may also refer to the power consumed by a circuit. This is opposed ...
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Electrical machine In electrical engineering, electric machine is a general term for machines using electromagnetic forces, such as electric motors, electric generators, and others. They are electromechanical energy converters: an electric motor converts electricity ...
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Electrical measurements Electrical measurements are the methods, devices and calculations used to measure electrical quantities. Measurement of electrical quantities may be done to measure electrical parameters of a system. Using transducers, physical properties such as t ...
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Electrical network An electrical network is an interconnection of electrical components (e.g., batteries, resistors, inductors, capacitors, switches, transistors) or a model of such an interconnection, consisting of electrical elements (e.g., voltage sources ...
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Electrical polarity An electric current is a stream of charged particles, such as electrons or ions, moving through an electrical conductor or space. It is measured as the net rate of flow of electric charge through a surface or into a control volume. The moving pa ...
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Electrical power transmission Electric power transmission is the bulk movement of electrical energy from a generating site, such as a power plant, to an electrical substation. The interconnected lines that facilitate this movement form a ''transmission network''. This is ...
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Electrical resistance The electrical resistance of an object is a measure of its opposition to the flow of electric current. Its reciprocal quantity is , measuring the ease with which an electric current passes. Electrical resistance shares some conceptual paralle ...
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Electrical steel Electrical steel (E-steel, lamination steel, silicon electrical steel, silicon steel, relay steel, transformer steel) is an iron alloy tailored to produce specific magnetic properties: small hysteresis area resulting in low power loss per cycle ...
– * Electrical substation – *
Electrical Technologist An electrical technologist is a technologist who is required to apply electrical theory on the job. Their knowledge and skill lies between that of electrical engineers and general electrical trades persons. In North America they train in a three ...
– * Electrical wiring in Hong Kong – *
Electrical wiring in North America Electrical wiring in North America follows the regulations and standards applicable at the installation location. It is also designed to provide proper function, and is also influenced by history and traditions of the location installation. The ...
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Electrical wiring in the United Kingdom Electrical wiring in the United Kingdom is commonly understood to be an electrical installation for operation by end users within domestic, commercial, industrial, and other buildings, and also in special installations and locations, such as mar ...
– * Electrical wiring regulations – * Electrical wiring – *
Electricity distribution Electric power distribution is the final stage in the delivery of electric power; it carries electricity from the transmission system to individual consumers. Distribution substations connect to the transmission system and lower the transmissi ...
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Electricity generation Electricity generation is the process of generating electric power from sources of primary energy. For utilities in the electric power industry, it is the stage prior to its delivery ( transmission, distribution, etc.) to end users or its s ...
– * Electricity meter – *
Electricity pylon A transmission tower, also known as an electricity pylon or simply a pylon in British English and as a hydro tower in Canadian English, is a tall structure, usually a steel lattice tower, used to support an overhead power line. In electrical ...
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Electricity Electricity is the set of physical phenomena associated with the presence and motion of matter that has a property of electric charge. Electricity is related to magnetism, both being part of the phenomenon of electromagnetism, as describ ...
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Electrification Electrification is the process of powering by electricity and, in many contexts, the introduction of such power by changing over from an earlier power source. The broad meaning of the term, such as in the history of technology, economic histor ...
– * Electroactive polymers – * Electrocardiograph – *
Electrochemical engineering Electrochemical engineering is the branch of chemical engineering dealing with the technological applications of electrochemical phenomena, such as electrosynthesis of chemicals, electrowinning and refining of metals, flow batteries and fuel cells, ...
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Electrodes An electrode is an electrical conductor used to make contact with a nonmetallic part of a circuit (e.g. a semiconductor, an electrolyte, a vacuum or air). Electrodes are essential parts of batteries that can consist of a variety of materials dep ...
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Electro-diesel locomotive An electro-diesel locomotive (also referred to as a dual-mode or bi-mode locomotive) is a type of locomotive that can be powered either from an electricity supply (like an electric locomotive) or by using the onboard diesel engine (like a diese ...
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Electrodynamics In physics, electromagnetism is an interaction that occurs between particles with electric charge. It is the second-strongest of the four fundamental interactions, after the strong force, and it is the dominant force in the interactions o ...
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Electrolytic An electrolyte is a medium containing ions that is electrically conducting through the movement of those ions, but not conducting electrons. This includes most soluble salts, acids, and bases dissolved in a polar solvent, such as water. Upon di ...
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Electromagnet An electromagnet is a type of magnet in which the magnetic field is produced by an electric current. Electromagnets usually consist of wire wound into a coil. A current through the wire creates a magnetic field which is concentrated in ...
– * Electromagnetic compatibility – * Electromagnetic field – * Electromagnetic induction – *
Electromagnetic radiation In physics, electromagnetic radiation (EMR) consists of waves of the electromagnetic (EM) field, which propagate through space and carry momentum and electromagnetic radiant energy. It includes radio waves, microwaves, infrared, (visible) li ...
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Electromagnetic spectrum The electromagnetic spectrum is the range of frequencies (the spectrum) of electromagnetic radiation and their respective wavelengths and photon energies. The electromagnetic spectrum covers electromagnetic waves with frequencies ranging fro ...
– * Electromagnetic wave equation – *
Electromagnetism In physics, electromagnetism is an interaction that occurs between particles with electric charge. It is the second-strongest of the four fundamental interactions, after the strong force, and it is the dominant force in the interactions of ...
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Electromechanical In engineering, electromechanics combines processes and procedures drawn from electrical engineering and mechanical engineering. Electromechanics focuses on the interaction of electrical and mechanical systems as a whole and how the two systems ...
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Electro-mechanical In engineering, electromechanics combines processes and procedures drawn from electrical engineering and mechanical engineering. Electromechanics focuses on the interaction of electrical and mechanical systems as a whole and how the two systems ...
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Electromote The Electromote was the world's first vehicle run like a trolleybus, which was first presented to the public on April 29, 1882, by its inventor Dr. Ernst Werner von Siemens in Halensee, a suburb of Berlin, Germany. In 1847, Siemens told his bro ...
– * Electromotive force – *
Electron microscope An electron microscope is a microscope that uses a beam of accelerated electrons as a source of illumination. As the wavelength of an electron can be up to 100,000 times shorter than that of visible light photons, electron microscopes have a hi ...
– * Electronic amplifier – * Electronic circuit – * Electronic component – *
Electronic Control Unit An electronic control unit (ECU), also known as an electronic control module (ECM), is an embedded system in automotive electronics that controls one or more of the electrical systems or subsystems in a car or other motor vehicle. Modern vehic ...
– * Electronic design automation – *
Electronic engineering Electronics engineering is a sub-discipline of electrical engineering which emerged in the early 20th century and is distinguished by the additional use of active components such as semiconductor devices to amplify and control electric current ...
– * Electronic filter – *
Electronic speed control An electronic speed control (ESC) is an electronic circuit that controls and regulates the speed of an electric motor. It may also provide reversing of the motor and dynamic braking. Miniature electronic speed controls are used in electrically p ...
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Electronics The field of electronics is a branch of physics and electrical engineering that deals with the emission, behaviour and effects of electrons using electronic devices. Electronics uses active devices to control electron flow by amplification ...
– * Electrophorus – *
Electrostatic motor An electrostatic motor or capacitor motor is a type of electric motor based on the attraction and repulsion of electric charge. An alternative type of electrostatic motor is the spacecraft electrostatic ion drive thruster where forces and motion ...
– * Electrostatics – *
Embedded operating system An embedded operating system is an operating system for embedded computer systems. Embedded operating systems are computer systems designed to increase functionality and reliability for achieving a specific task. Resource efficiency comes at the ...
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Embedded software Embedded software is computer software, written to control machines or devices that are not typically thought of as computers, commonly known as embedded systems. It is typically specialized for the particular hardware that it runs on and has tim ...
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Embedded system An embedded system is a computer system—a combination of a computer processor, computer memory, and input/output peripheral devices—that has a dedicated function within a larger mechanical or electronic system. It is ''embedded'' ...
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Enameled wire Magnet wire or enameled wire is a copper (Cu) or aluminium (Al) wire coated with a very thin layer of insulation. It is used in the construction of transformers, inductors, motors, generators, speakers, hard disk head actuators, electrom ...
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Energy demand management Energy demand management, also known as demand-side management (DSM) or demand-side response (DSR), is the modification of consumer demand for energy through various methods such as financial incentives and behavioral change through education. Us ...
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Energy economics Energy economics is a broad scientific subject area which includes topics related to supply and use of energy in societies. Considering the cost of energy services and associated value gives economic meaning to the efficiency at which energ ...
– * Energy efficient transformer – *
Energy returned on energy invested In energy economics and ecological energetics, energy return on investment (EROI), also sometimes called energy returned on energy invested (ERoEI), is the ratio of the amount of usable energy (the ''exergy'') delivered from a particular energy re ...
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Energy subsidies Energy subsidies are measures that keep prices for customers below market levels, or for suppliers above market levels, or reduce costs for customers and suppliers. Energy subsidies may be direct cash transfers to suppliers, customers, or rel ...
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Engineering economics ''For the application of engineering economics in the practice of civil engineering see Engineering economics (Civil Engineering).'' Engineering economics, previously known as engineering economy, is a subset of economics concerned with the us ...
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Engineering education Engineering education is the activity of teaching knowledge and principles to the professional practice of engineering. It includes an initial education (bachelor's and/or master's degree), and any advanced education and specializations that ...
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Engineering ethics Engineering ethics is the field of system of moral principles that apply to the practice of engineering. The field examines and sets the obligations by engineers to society, to their clients, and to the profession. As a scholarly discipline, it is ...
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Engineering management Engineering management is the application of the practice of management to the practice of engineering. Engineering management is a career that brings together the technological problem-solving ability of engineering and the organizational, admini ...
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Engineering society An engineering society is a professional organization for engineers of various disciplines. Some are umbrella type organizations which accept many different disciplines, while others are discipline-specific. Many award professional designations, s ...
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Engineering Engineering is the use of scientific principles to design and build machines, structures, and other items, including bridges, tunnels, roads, vehicles, and buildings. The discipline of engineering encompasses a broad range of more speciali ...
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Engine-generator An engine–generator is the combination of an electrical generator and an engine (prime mover) mounted together to form a single piece of equipment. This combination is also called an ''engine–generator set'' or a ''gen-set''. In many contexts ...
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ENIAC ENIAC (; Electronic Numerical Integrator and Computer) was the first programmable, electronic, general-purpose digital computer, completed in 1945. There were other computers that had these features, but the ENIAC had all of them in one pac ...
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Environmental engineering Environmental engineering is a professional engineering discipline that encompasses broad scientific topics like chemistry, biology, ecology, geology, hydraulics, hydrology, microbiology, and mathematics to create solutions that will protect and ...
– * Epstein frame – *
Equalization (audio) Equalization, or simply EQ, in sound recording and reproduction is the process of adjusting the volume of different frequency bands within an audio signal. The circuit or equipment used to achieve this is called an equalizer. Most hi-fi e ...
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Equalization (communications) In telecommunication, equalization is the reversal of distortion incurred by a signal transmitted through a channel. Equalizers are used to render the frequency response—for instance of a telephone line—''flat'' from end-to-end. When a channe ...
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Equivalent circuit In electrical engineering and science, an equivalent circuit refers to a theoretical circuit that retains all of the electrical characteristics of a given circuit. Often, an equivalent circuit is sought that simplifies calculation, and more broadly ...
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Equivalent impedance transforms An equivalent impedance is an equivalent circuit of an electrical network of impedance elements which presents the same impedance between all pairs of terminals as did the given network. This article describes mathematical transformations b ...
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Error correction and detection In information theory and coding theory with applications in computer science and telecommunication, error detection and correction (EDAC) or error control are techniques that enable reliable delivery of digital data over unreliable communica ...
– * Error correction – *
Error detection In information theory and coding theory with applications in computer science and telecommunication, error detection and correction (EDAC) or error control are techniques that enable reliable delivery of digital data over unreliable communi ...
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Ethernet Ethernet () is a family of wired computer networking technologies commonly used in local area networks (LAN), metropolitan area networks (MAN) and wide area networks (WAN). It was commercially introduced in 1980 and first standardized in 1 ...
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Ethical code Ethical codes are adopted by organizations to assist members in understanding the difference between right and wrong and in applying that understanding to their decisions. An ethical code generally implies documents at three levels: codes of b ...
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Euclidean geometry Euclidean geometry is a mathematical system attributed to ancient Greek mathematician Euclid, which he described in his textbook on geometry: the '' Elements''. Euclid's approach consists in assuming a small set of intuitively appealing axioms ...
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Euler–Lagrange equation In the calculus of variations and classical mechanics, the Euler–Lagrange equations are a system of second-order ordinary differential equations whose solutions are stationary points of the given action functional. The equations were discovered ...
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Euler's formula Euler's formula, named after Leonhard Euler, is a mathematical formula in complex analysis that establishes the fundamental relationship between the trigonometric functions and the complex exponential function. Euler's formula states that fo ...
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Euler's identity In mathematics, Euler's identity (also known as Euler's equation) is the equality e^ + 1 = 0 where : is Euler's number, the base of natural logarithms, : is the imaginary unit, which by definition satisfies , and : is pi, the ratio of the circ ...
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Exponential stability :''See Lyapunov stability, which gives a definition of asymptotic stability for more general dynamical systems. All exponentially stable systems are also asymptotically stable.'' In control theory, a continuous linear time-invariant system (LTI) ...
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Extended Kalman filter In estimation theory, the extended Kalman filter (EKF) is the nonlinear version of the Kalman filter which linearizes about an estimate of the current mean and covariance. In the case of well defined transition models, the EKF has been considered t ...
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External electric load An electrical load is an electrical component or portion of a circuit that consumes (active) electric power, such as electrical appliances and lights inside the home. The term may also refer to the power consumed by a circuit. This is opposed ...
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F

* Fairchild Semiconductor – * Farad – * Faraday shield – * Faraday–Lenz law – * Faraday's law of induction – * Fast Fourier transform – *
Fault (power engineering) In an electric power system, a fault or fault current is any abnormal electric current. For example, a short circuit is a fault in which a live wire touches a neutral or ground wire. An open-circuit fault occurs if a circuit is interrupted by a fa ...
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Fax Fax (short for facsimile), sometimes called telecopying or telefax (the latter short for telefacsimile), is the telephonic transmission of scanned printed material (both text and images), normally to a telephone number connected to a printer o ...
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Feed forward (control) A feed forward (sometimes written feedforward) is an element or pathway within a control system that passes a controlling signal from a source in its external environment to a load elsewhere in its external environment. This is often a command ...
– * Feedback amplifier – * Feedback – *
Feed-in tariff A feed-in tariff (FIT, FiT, standard offer contract,Couture, T., Cory, K., Kreycik, C., Williams, E., (2010)Policymaker's Guide to Feed-in Tariff Policy Design National Renewable Energy Laboratory, U.S. Dept. of Energy advanced renewable tariff, ...
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Ferranti Ferranti or Ferranti International plc was a UK electrical engineering and equipment firm that operated for over a century from 1885 until it went bankrupt in 1993. The company was once a constituent of the FTSE 100 Index. The firm was known ...
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Ferrite core In electronics, a ferrite core is a type of magnetic core made of ferrite on which the windings of electric transformers and other wound components such as inductors are formed. It is used for its properties of high magnetic permeability couple ...
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Ferroelectricity Ferroelectricity is a characteristic of certain materials that have a spontaneous electric polarization that can be reversed by the application of an external electric field. All ferroelectrics are also piezoelectric and pyroelectric, with the a ...
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Fiber optic cable A fiber-optic cable, also known as an optical-fiber cable, is an assembly similar to an electrical cable, but containing one or more optical fibers that are used to carry light. The optical fiber elements are typically individually coated with ...
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Fiber optic An optical fiber, or optical fibre in Commonwealth English, is a flexible, transparent fiber made by drawing glass (silica) or plastic to a diameter slightly thicker than that of a human hair. Optical fibers are used most often as a means t ...
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Field-effect transistor The field-effect transistor (FET) is a type of transistor that uses an electric field to control the flow of current in a semiconductor. FETs ( JFETs or MOSFETs) are devices with three terminals: ''source'', ''gate'', and ''drain''. FETs cont ...
– * Field-oriented control – *
Fields of engineering Engineering is the discipline and profession that applies science, scientific theories, mathematical methods, and empirical evidence to design, create, and analyze technological solutions cognizant of safety, human factors, physical laws, regulatio ...
– * Filter (signal processing) – *
Filter capacitor Capacitors have many uses in electronic and electrical systems. They are so ubiquitous that it is rare that an electrical product does not include at least one for some purpose. Energy storage A capacitor can store electric energy when it is c ...
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Finite impulse response In signal processing, a finite impulse response (FIR) filter is a filter whose impulse response (or response to any finite length input) is of ''finite'' duration, because it settles to zero in finite time. This is in contrast to infinite impulse ...
– * Firmware – *
First principles In philosophy and science, a first principle is a basic proposition or assumption that cannot be deduced from any other proposition or assumption. First principles in philosophy are from First Cause attitudes and taught by Aristotelians, and nua ...
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Fleming valve The Fleming valve, also called the Fleming oscillation valve, was a thermionic valve or vacuum tube invented in 1904 by English physicist John Ambrose Fleming as a detector for early radio receivers used in electromagnetic wireless telegraphy. ...
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Fleming's left-hand rule for motors Fleming's left-hand rule for electric motors is one of a pair of visual mnemonics, the other being Fleming's right-hand rule (for generators). They were originated by John Ambrose Fleming, in the late 19th century, as a simple way of working out ...
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Flight instruments Flight instruments are the instruments in the cockpit of an aircraft that provide the pilot with data about the flight situation of that aircraft, such as altitude, airspeed, vertical speed, heading and much more other crucial information in f ...
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Fluorescent lamp A fluorescent lamp, or fluorescent tube, is a low-pressure mercury-vapor gas-discharge lamp that uses fluorescence to produce visible light. An electric current in the gas excites mercury vapor, which produces short-wave ultraviolet ligh ...
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Fluorinated ethylene propylene Fluorinated ethylene propylene (FEP) is a copolymer of hexafluoropropylene and tetrafluoroethylene. It differs from the polytetrafluoroethylene (PTFE) resins in that it is melt-processable using conventional injection molding and screw extrusion t ...
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Flux linkage In circuit theory, flux linkage is a property of a two-terminal element. It is an extension rather than an equivalent of magnetic flux and is defined as a time integral :\lambda = \int \mathcal \,dt, where \mathcal is the voltage across the de ...
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Flyback converter The flyback converter is used in both AC/DC, and DC/DC conversion with galvanic isolation between the input and any outputs. The flyback converter is a buck-boost converter with the inductor split to form a transformer, so that the voltage ra ...
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Flyback transformer A flyback transformer (FBT), also called a line output transformer (LOPT), is a special type of electrical transformer. It was initially designed to generate high voltage sawtooth signals at a relatively high frequency. In modern applications, ...
– * Fokker–Planck equation – *
Forward converter Forward is a relative direction, the opposite of backward. Forward may also refer to: People *Forward (surname) Sports * Forward (association football) * Forward (basketball), including: ** Point forward ** Power forward (basketball) ** Smal ...
– * Fossil-fuel phase-out-- *
Fossil-fuel power station A fossil fuel power station is a thermal power station which burns a fossil fuel, such as coal or natural gas, to produce electricity. Fossil fuel power stations have machinery to convert the heat energy of combustion into mechanical energy, wh ...
-- * Fourier series – * Fourier transform – * FPGA – * Free-space optical communications – *
Frequency changer A frequency changer or frequency converter is an electronic or electromechanical device that converts alternating current ( AC) of one frequency to alternating current of another frequency. The device may also change the voltage, but if it does, ...
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Frequency modulation Frequency modulation (FM) is the encoding of information in a carrier wave by varying the instantaneous frequency of the wave. The technology is used in telecommunications, radio broadcasting, signal processing, and computing. In analog fre ...
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Frequency response In signal processing and electronics, the frequency response of a system is the quantitative measure of the magnitude and phase of the output as a function of input frequency. The frequency response is widely used in the design and analysis of s ...
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Frequency Frequency is the number of occurrences of a repeating event per unit of time. It is also occasionally referred to as ''temporal frequency'' for clarity, and is distinct from ''angular frequency''. Frequency is measured in hertz (Hz) which is eq ...
– * Full load current – *
Full-wave rectifier A rectifier is an electrical device that converts alternating current (AC), which periodically reverses direction, to direct current (DC), which flows in only one direction. The reverse operation (converting DC to AC) is performed by an inver ...
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Fundamentals of Engineering exam The Fundamentals of Engineering (FE) exam, also referred to as the Engineer in Training (EIT) exam, and formerly in some states as the Engineering Intern (EI) exam, is the first of two examinations that engineers must pass in order to be licensed ...
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Fuse (electrical) In electronics and electrical engineering, a fuse is an electrical safety device that operates to provide overcurrent protection of an electrical circuit. Its essential component is a metal wire or strip that melts when too much current flows thr ...
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Fuzzy control A fuzzy control system is a control system based on fuzzy logic—a mathematical system that analyzes analog input values in terms of logical variables that take on continuous values between 0 and 1, in contrast to classical or digital logic, ...
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G

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Gain scheduling In control theory, gain scheduling is an approach to control of non-linear systems that uses a family of linear controllers, each of which provides satisfactory control for a different operating point of the system. One or more observable variable ...
– * Galvanic corrosion – *
Galvanometer A galvanometer is an electromechanical measuring instrument for electric current. Early galvanometers were uncalibrated, but improved versions, called ammeters, were calibrated and could measure the flow of current more precisely. A galvan ...
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Gas-filled tube A gas-filled tube, also commonly known as a discharge tube or formerly as a Plücker tube, is an arrangement of electrodes in a gas within an insulating, temperature-resistant envelope. Gas-filled tubes exploit phenomena related to electric ...
– * Gate turn-off thyristor (GTO) – *
Gauss's law In physics and electromagnetism, Gauss's law, also known as Gauss's flux theorem, (or sometimes simply called Gauss's theorem) is a law relating the distribution of electric charge to the resulting electric field. In its integral form, it sta ...
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Gauss–Seidel method In numerical linear algebra, the Gauss–Seidel method, also known as the Liebmann method or the method of successive displacement, is an iterative method used to solve a system of linear equations. It is named after the German mathematicians Carl ...
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General Electric Company plc The General Electric Company (GEC) was a major British industrial conglomerate involved in consumer and defence electronics, communications, and engineering. The company was founded in 1886, was Britain's largest private employer with over 25 ...
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General Electric General Electric Company (GE) is an American multinational conglomerate founded in 1892, and incorporated in New York state and headquartered in Boston. The company operated in sectors including healthcare, aviation, power, renewable en ...
– * General Radio Corporation – *
Generator (circuit theory) A generator in electrical circuit theory is one of two ideal elements: an ideal voltage source, or an ideal current source. These are two of the fundamental electrical element, elements in circuit theory. Real electrical generators are most comm ...
– * Geographic information systems – *
Georgia School of Technology The Georgia Institute of Technology, commonly referred to as Georgia Tech or, in the state of Georgia, as Tech or The Institute, is a public research university and institute of technology in Atlanta, Georgia. Established in 1885, it is part of ...
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Geoscience Earth science or geoscience includes all fields of natural science related to the planet Earth. This is a branch of science dealing with the physical, chemical, and biological complex constitutions and synergistic linkages of Earth's four sphere ...
– * Geothermal power – * Germanium – * Gigabit – *
Global Positioning System The Global Positioning System (GPS), originally Navstar GPS, is a satellite-based radionavigation system owned by the United States government and operated by the United States Space Force. It is one of the global navigation satellite sy ...
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Gold Gold is a chemical element with the symbol Au (from la, aurum) and atomic number 79. This makes it one of the higher atomic number elements that occur naturally. It is a bright, slightly orange-yellow, dense, soft, malleable, and ductile me ...
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Governor (device) A governor, or speed limiter or controller, is a device used to measure and regulate the speed of a machine, such as an engine. A classic example is the centrifugal governor, also known as the Watt or fly-ball governor on a reciprocating ste ...
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GPS The Global Positioning System (GPS), originally Navstar GPS, is a satellite-based radionavigation system owned by the United States government and operated by the United States Space Force. It is one of the global navigation satellite sy ...
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Gradient descent In mathematics, gradient descent (also often called steepest descent) is a first-order iterative optimization algorithm for finding a local minimum of a differentiable function. The idea is to take repeated steps in the opposite direction of the ...
– * Grid energy storage – *
Grid-tie inverter A grid-tie inverter converts direct current (DC) into an alternating current (AC) suitable for injecting into an electrical power grid, normally 120 V RMS at 60 Hz or 240 V RMS at 50 Hz. Grid-tie inverters are used between local electrica ...
– * Ground (electricity) – *
Ground and neutral Ground and neutral are circuit conductors used in alternating current electrical systems. The ground circuit is connected to earth, and neutral circuit is usually connected to ground. As the neutral point of an electrical supply system is often ...
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Ground-level power supply Ground-level power supply, also known as surface current collection or, in French, ''alimentation par le sol'' ("feeding via the ground"), is a concept and group of technologies whereby electric vehicles collect electric power at ground level fro ...
– * Growler (electrical device) – *
GSM The Global System for Mobile Communications (GSM) is a standard developed by the European Telecommunications Standards Institute (ETSI) to describe the protocols for second-generation ( 2G) digital cellular networks used by mobile devices such ...
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Gunn diode A Gunn diode, also known as a transferred electron device (TED), is a form of diode, a two-terminal semiconductor electronic component, with negative resistance, used in high-frequency electronics. It is based on the "Gunn effect" discovered in 1 ...
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Gyrotron High-power 140 GHz gyrotron for plasma heating in the Wendelstein 7-X fusion experiment, Germany. A gyrotron is a class of high-power linear-beam vacuum tubes that generates millimeter-wave electromagnetic waves by the cyclotron resonance of e ...
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H

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H infinity ''H''∞ (i.e. "''H''-infinity") methods are used in control theory to synthesize controllers to achieve stabilization with guaranteed performance. To use ''H''∞ methods, a control designer expresses the control problem as a mathematical optimiz ...
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Hall-effect sensor A Hall effect sensor (or simply Hall sensor) is a type of sensor which detects the presence and magnitude of a magnetic field using the Hall effect. The output voltage of a Hall sensor is directly proportional to the strength of the field. I ...
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Harmonic distortion In signal processing, distortion is the alteration of the original shape (or other characteristic) of a signal. In communications and electronics it means the alteration of the waveform of an information-bearing signal, such as an audio signal ...
– * Harmonic oscillator – * Harmonic – *
Harmonics (electrical power) In an electric power system, a harmonic of a voltage or current waveform is a sinusoidal wave whose frequency is an integer multiple of the fundamental frequency. Harmonic frequencies are produced by the action of non-linear loads such as rectifie ...
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H-bridge A H-bridge is an electronic circuit that switches the polarity of a voltage applied to a load. These circuits are often used in robotics and other applications to allow DC motors to run forwards or backwards. The name is derived from its common sch ...
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HDTV High-definition television (HD or HDTV) describes a television system which provides a substantially higher image resolution than the previous generation of technologies. The term has been used since 1936; in more recent times, it refers to the g ...
– * Headphone – *
Heat transfer Heat transfer is a discipline of thermal engineering that concerns the generation, use, conversion, and exchange of thermal energy (heat) between physical systems. Heat transfer is classified into various mechanisms, such as thermal conduction, ...
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Heatsink A heat sink (also commonly spelled heatsink) is a passive heat exchanger that transfers the heat generated by an electronic or a mechanical device to a fluid medium, often air or a liquid coolant, where it is dissipated away from the device, th ...
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Heaviside step function The Heaviside step function, or the unit step function, usually denoted by or (but sometimes , or ), is a step function, named after Oliver Heaviside (1850–1925), the value of which is zero for negative arguments and one for positive argum ...
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Henry (unit) The henry (symbol: H) is the unit of electrical inductance in the International System of Units (SI). If a current of 1 ampere flowing through a coil produces flux linkage of 1 weber turn, that coil has a self inductance of 1 henry.‌ The unit ...
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Hertz The hertz (symbol: Hz) is the unit of frequency in the International System of Units (SI), equivalent to one event (or cycle) per second. The hertz is an SI derived unit whose expression in terms of SI base units is s−1, meaning that o ...
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Heterostructure A heterojunction is an interface between two layers or regions of dissimilar semiconductors. These semiconducting materials have unequal band gaps as opposed to a homojunction. It is often advantageous to engineer the electronic energy bands in m ...
– * Hewlett-Packard – * Hi-Fi – *
High-voltage cable A high-voltage cable (HV cable) is a cable used for electric power transmission at high voltage. A cable includes a conductor and insulation. Cables are considered to be fully insulated. This means that they have a fully rated insulation system t ...
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High voltage High voltage electricity refers to electrical potential large enough to cause injury or damage. In certain industries, ''high voltage'' refers to voltage above a certain threshold. Equipment and conductors that carry high voltage warrant sp ...
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High-pass filter A high-pass filter (HPF) is an electronic filter that passes signals with a frequency higher than a certain cutoff frequency and attenuates signals with frequencies lower than the cutoff frequency. The amount of attenuation for each frequency ...
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High-voltage direct current A high-voltage direct current (HVDC) electric power transmission system (also called a power superhighway or an electrical superhighway) uses direct current (DC) for electric power transmission, in contrast with the more common alternating curre ...
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High-voltage switchgear High voltage switchgear is any switchgear used to connect or disconnect a part of a high-voltage power system. This equipment is essential for the protection and safe operation, without interruption, of a high voltage power system, and is importa ...
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Hilbert transform In mathematics and in signal processing, the Hilbert transform is a specific linear operator that takes a function, of a real variable and produces another function of a real variable . This linear operator is given by convolution with the functi ...
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History of electrical engineering This article details the history of electrical engineering. Ancient developments Long before any knowledge of electricity existed, people were aware of shocks from electric fish. Ancient Egyptian texts dating from 2750 BCE referred to these f ...
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Holography Holography is a technique that enables a wavefront to be recorded and later re-constructed. Holography is best known as a method of generating real three-dimensional images, but it also has a wide range of other applications. In principle, i ...
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Home appliance A home appliance, also referred to as a domestic appliance, an electric appliance or a household appliance, is a machine which assists in household functions such as cooking, cleaning and food preservation. Appliances are divided into three ...
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Homopolar generator A homopolar generator is a DC electrical generator comprising an electrically conductive disc or cylinder rotating in a plane perpendicular to a uniform static magnetic field. A potential difference is created between the center of the disc and th ...
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Homopolar motor A homopolar motor is a direct current electric motor with two magnetic poles, the conductors of which always cut unidirectional lines of magnetic flux by rotating a conductor around a fixed axis so that the conductor is at right angles to a s ...
– *
Horsepower Horsepower (hp) is a unit of measurement of power, or the rate at which work is done, usually in reference to the output of engines or motors. There are many different standards and types of horsepower. Two common definitions used today are t ...
– * Hot wire barretter – *
Hradec substation Hradec substation ( cs, rozvodna Hradec) is a collector substation connecting the 220 kV and 400 kV grid in the Czech Republic's electricity grid. It is situated in Rokle near its local part Hradec in the Ústí nad Labem Region. Description I ...
– *
Hughes Aircraft The Hughes Aircraft Company was a major American aerospace and defense contractor founded on February 14, 1934 by Howard Hughes in Glendale, California, as a division of Hughes Tool Company. The company was known for producing, among other pro ...
– *
Humidistat A humidistat or hygrostat is an electronic device analogous to a thermostat but which responds to relative humidity, not temperature. A typical humidistat is usually included with portable humidifiers or dehumidifiers. It can also be included w ...
– * HVAC – *
HVDC converter station An HVDC converter station (or simply converter station) is a specialised type of substation which forms the terminal equipment for a high-voltage direct current (HVDC) transmission line.Arrillaga, Jos; High Voltage Direct Current Transmission, se ...
– *
HVDC A high-voltage direct current (HVDC) electric power transmission system (also called a power superhighway or an electrical superhighway) uses direct current (DC) for electric power transmission, in contrast with the more common alternating curre ...
– *
Hybrid coil A hybrid coil (or bridge transformer, or sometimes hybrid) is a transformer that has three windings, and which is designed to be configured as a circuit having four ports that are conjugate in pairs. A signal arriving at one port is divided e ...
– *
Hybrid electric vehicle A hybrid electric vehicle (HEV) is a type of hybrid vehicle that combines a conventional internal combustion engine (ICE) system with an electric propulsion system (hybrid vehicle drivetrain). The presence of the electric powertrain is intended ...
– *
Hybrid Synergy Drive Hybrid Synergy Drive (HSD), also known as Toyota Hybrid System II, is the brand name of Toyota Motor Corporation for the hybrid car drive train technology used in vehicles with the Toyota and Lexus marques. First introduced on the Toyota Prius, ...
– *
Hydroelectricity Hydroelectricity, or hydroelectric power, is electricity generated from hydropower (water power). Hydropower supplies one sixth of the world's electricity, almost 4500 TWh in 2020, which is more than all other renewable sources combined an ...
– *
Hydrogen embrittlement Hydrogen embrittlement (HE), also known as hydrogen-assisted cracking or hydrogen-induced cracking (HIC), is a reduction in the ductility of a metal due to absorbed hydrogen. Hydrogen atoms are small and can permeate solid metals. Once absorbed ...
– *
Hydropower Hydropower (from el, ὕδωρ, "water"), also known as water power, is the use of falling or fast-running water to produce electricity or to power machines. This is achieved by converting the gravitational potential or kinetic energy of a w ...
– *
Hydro-Québec's electricity transmission system Hydro-Québec's electricity transmission system (also known as the Quebec interconnection) is an international electric power transmission system centred in Quebec, Canada. The system pioneered the use of very high voltage 735-kilovolt (kV) alt ...
– * Hysteresis – *


I

* Idaho National Laboratory – *
IEC61850 IEC 61850 is an international standard defining communication protocols for intelligent electronic devices at electrical substations. It is a part of the International Electrotechnical Commission's (IEC) Technical Committee 57 reference archit ...
– *
IEEE Aerospace and Electronic Systems Society The Institute of Electrical and Electronics Engineers (IEEE) is a 501(c)(3) professional association for electronic engineering and electrical engineering (and associated disciplines) with its corporate office in New York City and its operation ...
– *
IEEE Antennas and Propagation Society The Institute of Electrical and Electronics Engineers (IEEE) is a 501(c)(3) professional association for electronic engineering and electrical engineering (and associated disciplines) with its corporate office in New York City and its operation ...
– * IEEE Broadcast Technology Society – *
IEEE Circuits and Systems Society The Institute of Electrical and Electronics Engineers (IEEE) is a 501(c)(3) professional association for electronic engineering and electrical engineering (and associated disciplines) with its corporate office in New York City and its operati ...
– *
IEEE Communications Society The Institute of Electrical and Electronics Engineers (IEEE) is a 501(c)(3) professional association for electronic engineering and electrical engineering (and associated disciplines) with its corporate office in New York City and its operation ...
– *
IEEE Dielectrics & Electrical Insulation Society The Institute of Electrical and Electronics Engineers (IEEE) is a 501(c)(3) professional association for electronic engineering and electrical engineering (and associated disciplines) with its corporate office in New York City and its operati ...
– *
IEEE Electromagnetic Compatibility Society The Institute of Electrical and Electronics Engineers (IEEE) is a 501(c)(3) professional association for electronic engineering and electrical engineering (and associated disciplines) with its corporate office in New York City and its operati ...
– *
IEEE Electron Devices Society The Institute of Electrical and Electronics Engineers (IEEE) is a 501(c)(3) professional association for electronic engineering and electrical engineering (and associated disciplines) with its corporate office in New York City and its operati ...
– *
IEEE Engineering in Medicine and Biology Society The Institute of Electrical and Electronics Engineers (IEEE) is a 501(c)(3) professional association for electronic engineering and electrical engineering (and associated disciplines) with its corporate office in New York City and its operati ...
– * IEEE Geoscience and Remote Sensing Society – *
IEEE Industrial Electronics Society The Institute of Electrical and Electronics Engineers (IEEE) is a 501(c)(3) professional association for electronic engineering and electrical engineering (and associated disciplines) with its corporate office in New York City and its operati ...
– *
IEEE Industry Applications Society The Institute of Electrical and Electronics Engineers (IEEE) is a 501(c)(3) professional association for electronic engineering and electrical engineering (and associated disciplines) with its corporate office in New York City and its operati ...
– *
IEEE Information Theory Society The Institute of Electrical and Electronics Engineers (IEEE) is a 501(c)(3) professional association for electronic engineering and electrical engineering (and associated disciplines) with its corporate office in New York City and its operation ...
– * IEEE Instrumentation & Measurement Society – *
IEEE Intelligent Transportation Systems Society The Institute of Electrical and Electronics Engineers (IEEE) is a 501(c)(3) professional association for electronic engineering and electrical engineering (and associated disciplines) with its corporate office in New York City and its operation ...
– * IEEE Magnetics Society – *
IEEE Microwave Theory and Techniques Society The Institute of Electrical and Electronics Engineers (IEEE) is a 501(c)(3) professional association for electronic engineering and electrical engineering (and associated disciplines) with its corporate office in New York City and its operation ...
– *
IEEE Nuclear and Plasma Sciences Society The Institute of Electrical and Electronics Engineers (IEEE) is a 501(c)(3) professional association for electronic engineering and electrical engineering (and associated disciplines) with its corporate office in New York City and its operati ...
– * IEEE Oceanic Engineering Society – *
IEEE Photonics Society The IEEE Photonics Society, formerly the IEEE Lasers and Electro-Optics Society (LEOS), is a society of the Institute of Electrical and Electronics Engineers (IEEE), focused on the scientific and engineering knowledge about the field of quantum ele ...
– *
IEEE Power & Energy Society The Institute of Electrical and Electronics Engineers (IEEE) is a 501(c)(3) professional association for electronic engineering and electrical engineering (and associated disciplines) with its corporate office in New York City and its operati ...
– * IEEE Reliability Society – *
IEEE Robotics and Automation Society The IEEE Robotics and Automation Society (IEEE RAS) is a professional society of the IEEE that supports the development and the exchange of scientific knowledge in the fields of robotics and automation, including applied and theoretical issues. ...
– *
IEEE Signal Processing Society The IEEE Signal Processing Society (IEEE SPS) is one of the nearly 40 technical societies of the Institute of Electrical and Electronics Engineers (IEEE) and the first one created. Its mission is to "advance and disseminate state-of-the-art scien ...
– * IEEE Society on Social Implications of Technology – * IEEE Solid-State Circuits Society – *
IEEE Systems, Man, and Cybernetics Society The IEEE Systems, Man, and Cybernetics Society (IEEE SMCS) is a professional society of the IEEE. It aims "to serve the interests of its members and the community at large by promoting the theory, practice, and interdisciplinary aspects of systems ...
– *
IEEE Ultrasonics, Ferroelectrics, and Frequency Control Society The Institute of Electrical and Electronics Engineers (IEEE) is a 501(c)(3) professional association for electronic engineering and electrical engineering (and associated disciplines) with its corporate office in New York City and its operati ...
– * IEEE Vehicular Technology Society – *
IEEE Xplore IEEE Xplore digital library is a research database for discovery and access to journal articles, conference proceedings, technical standards, and related materials on computer science, electrical engineering and electronics, and allied fields. It ...
– * IGBT – *
Image impedance Image impedance is a concept used in electronic network design and analysis and most especially in filter design. The term ''image impedance'' applies to the impedance seen looking into a Port (circuit theory), port of a network. Usually a two-port ...
– * Image noise reduction – * Image processing – * Impulse response – * Incandescent lamp – *
Incandescent light bulb An incandescent light bulb, incandescent lamp or incandescent light globe is an electric light with a wire filament heated until it glows. The filament is enclosed in a glass bulb with a vacuum or inert gas to protect the filament from oxid ...
– * Inchworm motor— * Inductance – * Induction coil – * induction cooker – *
Induction generator An induction generator or ''asynchronous generator'' is a type of alternating current (AC) electrical generator that uses the principles of induction motors to produce electric power. Induction generators operate by mechanically turning their rot ...
– * Induction motor – *
Induction regulator An induction regulator is an alternating current electrical machine, somewhat similar to an induction motor, which can provide a continuously variable output voltage. The induction regulator was an early device used to control the voltage of elect ...
– * Inductive coupling – *
Inductive output tube The inductive output tube (IOT) or klystrode is a variety of linear-beam vacuum tube, similar to a klystron, used as a power amplifier for high frequency radio waves. It evolved in the 1980s to meet increasing efficiency requirements for high-po ...
– *
Inductor An inductor, also called a coil, choke, or reactor, is a passive two-terminal electrical component that stores energy in a magnetic field when electric current flows through it. An inductor typically consists of an insulated wire wound into a c ...
– *
Inductors An inductor, also called a coil, choke, or reactor, is a passive two-terminal electrical component that stores energy in a magnetic field when electric current flows through it. An inductor typically consists of an insulated wire wound into a c ...
– *
Industrial and multiphase power plugs and sockets Industrial and multiphase plugs and sockets provide a connection to the electrical mains rated at higher voltages and currents than household plugs and sockets. They are generally used in polyphase systems, with high currents, or when protection f ...
– *
Industrial automation Automation describes a wide range of technologies that reduce human intervention in processes, namely by predetermining decision criteria, subprocess relationships, and related actions, as well as embodying those predeterminations in machines ...
– *
Industrial Control Systems An industrial control system (ICS) is an electronic control system and associated instrumentation used for industrial process control. Control systems can range in size from a few modular panel-mounted controllers to large interconnected and i ...
– *
Infinite impulse response Infinite impulse response (IIR) is a property applying to many linear time-invariant systems that are distinguished by having an impulse response h(t) which does not become exactly zero past a certain point, but continues indefinitely. This is in ...
– *
Information appliance An information appliance (IA) is an appliance that is designed to easily perform a specific electronic function such as playing music, photography, or editing text. Typical examples are smartphones and personal digital assistants (PDAs). Inf ...
– *
Information communication technology Information and communications technology (ICT) is an extensional term for information technology (IT) that stresses the role of unified communications and the integration of telecommunications (telephone lines and wireless signals) and computers, ...
– * Information Theory – *
Information Information is an abstract concept that refers to that which has the power to inform. At the most fundamental level information pertains to the interpretation of that which may be sensed. Any natural process that is not completely random ...
– * Inga–Shaba – *
Input/output In computing, input/output (I/O, or informally io or IO) is the communication between an information processing system, such as a computer, and the outside world, possibly a human or another information processing system. Inputs are the signals ...
– *
Inrush current Inrush current, input surge current, or switch-on surge is the maximal instantaneous input current drawn by an electrical device when first turned on. Alternating-current electric motors and transformers may draw several times their normal full-lo ...
– * Institute of Electrical and Electronics Engineers (IEEE) – *
Institution of Electrical Engineers The Institution of Electrical Engineers (IEE) was a British professional organisation of electronics, electrical, manufacturing, and Information Technology professionals, especially electrical engineers. It began in 1871 as the Society of T ...
– *
Institution of Engineering and Technology The Institution of Engineering and Technology (IET) is a multidisciplinary professional engineering institution. The IET was formed in 2006 from two separate institutions: the Institution of Electrical Engineers (IEE), dating back to 1871, and ...
– *
Instrumentation engineering Instrumentation a collective term for measuring instruments that are used for indicating, measuring and recording physical quantities. The term has its origins in the art and science of scientific instrument-making. Instrumentation can refer to ...
– *
Instrumentation Instrumentation a collective term for measuring instruments that are used for indicating, measuring and recording physical quantities. The term has its origins in the art and science of scientific instrument-making. Instrumentation can refer to ...
– *
Insulation monitoring device An insulation monitoring device monitors the ungrounded system between an active phase conductor and earth. It is intended to give an alert (light and sound) or disconnect the power supply when the resistance between the two conductors drops below ...
– *
Insulator (electrical) An electrical insulator is a material in which electric current does not flow freely. The atoms of the insulator have tightly bound electrons which cannot readily move. Other materials—semiconductors and conductors—conduct electric current ...
– * Integrated circuit – *
Intel 4004 The Intel 4004 is a 4-bit central processing unit (CPU) released by Intel Corporation in 1971. Sold for US$60, it was the first commercially produced microprocessor, and the first in a long line of Intel CPUs. The 4004 was the first significa ...
– *
Intel 8080 The Intel 8080 (''"eighty-eighty"'') is the second 8-bit microprocessor designed and manufactured by Intel. It first appeared in April 1974 and is an extended and enhanced variant of the earlier 8008 design, although without binary compatibil ...
– * Intel Corporation – *
Intel Intel Corporation is an American multinational corporation and technology company headquartered in Santa Clara, California. It is the world's largest semiconductor chip manufacturer by revenue, and is one of the developers of the x86 seri ...
– *
Intelligent control Intelligent control is a class of control techniques that use various artificial intelligence computing approaches like neural networks, Bayesian probability, fuzzy logic, machine learning, reinforcement learning, evolutionary computation and geneti ...
– * Intelligent Transportation System – *
Intermittent energy source Variable renewable energy (VRE) or intermittent renewable energy sources (IRES) are renewable energy sources that are not dispatchable due to their fluctuating nature, such as wind power and solar power, as opposed to controllable renewable ener ...
– *
Internal combustion engine An internal combustion engine (ICE or IC engine) is a heat engine in which the combustion of a fuel occurs with an oxidizer (usually air) in a combustion chamber that is an integral part of the working fluid flow circuit. In an internal c ...
– * International Electrotechnical Commission (IEC) – *
International Organization for Standardization The International Organization for Standardization (ISO ) is an international standard development organization composed of representatives from the national standards organizations of member countries. Membership requirements are given in Art ...
– *
Interrupter An interrupter in electrical engineering is a device used to interrupt the flow of a steady direct current for the purpose of converting a steady current into a changing one. Frequently, the interrupter is used in conjunction with an inductor (c ...
– *
Invention of radio The invention of radio communication was preceded by many decades of establishing theoretical underpinnings, discovery and experimental investigation of radio waves, and engineering and technical developments related to their transmission and d ...
– *
Inverter (electrical) A power inverter, inverter or invertor is a power electronic device or circuitry that changes direct current (DC) to alternating current (AC). The resulting AC frequency obtained depends on the particular device employed. Inverters do the opp ...
– * Iron loss – * Isolated-phase bus – *
Isolation transformer An isolation transformer is a transformer used to transfer electrical power from a source of alternating current (AC) power to some equipment or device while isolating the powered device from the power source, usually for safety reasons or to re ...
– *
Iterative learning control Iterative Learning Control (ILC) is a method of tracking control for systems that work in a repetitive mode. Examples of systems that operate in a repetitive manner include robot arm manipulators, chemical batch processes and reliability testing ...
–


J

*
j operator In computer science, Peter Landin's J operator is a programming construct that Function composition, post-composes a Lambda (programming), lambda expression with the continuation to the current lambda-context. The resulting “function” is first ...
– *
Jacobi method In numerical linear algebra, the Jacobi method is an iterative algorithm for determining the solutions of a strictly diagonally dominant system of linear equations. Each diagonal element is solved for, and an approximate value is plugged in. The ...
– * Jedlik's dynamo – *
JFET The junction-gate field-effect transistor (JFET) is one of the simplest types of field-effect transistor. JFETs are three-terminal semiconductor devices that can be used as electronically controlled switches or resistors, or to build amplifier ...
– * Joule heating – *
Joule The joule ( , ; symbol: J) is the unit of energy in the International System of Units (SI). It is equal to the amount of work done when a force of 1 newton displaces a mass through a distance of 1 metre in the direction of the force applie ...
–


K

*
Kalman filter For statistics and control theory, Kalman filtering, also known as linear quadratic estimation (LQE), is an algorithm that uses a series of measurements observed over time, including statistical noise and other inaccuracies, and produces estima ...
– *
Kalman–Yakubovich–Popov lemma The Kalman–Yakubovich–Popov lemma is a result in system analysis and control theory which states: Given a number \gamma > 0, two n-vectors B, C and an n x n Hurwitz matrix A, if the pair (A,B) is completely controllable, then a symmetric matri ...
– * Kelvin–Stokes theorem – * Kilovolt-ampere – *
Kirchhoff's circuit laws Kirchhoff's circuit laws are two equalities that deal with the current and potential difference (commonly known as voltage) in the lumped element model of electrical circuits. They were first described in 1845 by German physicist Gustav Kirc ...
– *
Klystron A klystron is a specialized linear-beam vacuum tube, invented in 1937 by American electrical engineers Russell and Sigurd Varian,Pond, Norman H. "The Tube Guys". Russ Cochran, 2008 p.31-40 which is used as an amplifier for high radio frequen ...
– *
Kolmogorov backward equation In probability theory, Kolmogorov equations, including Kolmogorov forward equations and Kolmogorov backward equations, characterize continuous-time Markov processes. In particular, they describe how the probability that a continuous-time Markov pr ...
–


L

* Lacquer – * LAN – *
Laplace transform In mathematics, the Laplace transform, named after its discoverer Pierre-Simon Laplace (), is an integral transform that converts a function of a real variable (usually t, in the '' time domain'') to a function of a complex variable s (in the ...
– *
Laser diode The laser diode chip removed and placed on the eye of a needle for scale A laser diode (LD, also injection laser diode or ILD, or diode laser) is a semiconductor device similar to a light-emitting diode in which a diode pumped directly with e ...
– * Leakage inductance – * Least squares – *
Light-emitting diode A light-emitting diode (LED) is a semiconductor device that emits light when current flows through it. Electrons in the semiconductor recombine with electron holes, releasing energy in the form of photons. The color of the light (co ...
– *
Line integral In mathematics, a line integral is an integral where the function to be integrated is evaluated along a curve. The terms ''path integral'', ''curve integral'', and ''curvilinear integral'' are also used; ''contour integral'' is used as well, al ...
– *
Linear alternator A linear alternator is essentially a linear motor used as an electrical generator. An alternator is a type of alternating current (AC) electrical generator. The devices are often physically equivalent. The principal difference is in how they are ...
– *
linear differential equation In mathematics, a linear differential equation is a differential equation that is defined by a linear polynomial in the unknown function and its derivatives, that is an equation of the form :a_0(x)y + a_1(x)y' + a_2(x)y'' \cdots + a_n(x)y^ = b ...
– *
Linear matrix inequality In convex optimization, a linear matrix inequality (LMI) is an expression of the form : \operatorname(y):=A_0+y_1A_1+y_2A_2+\cdots+y_m A_m\succeq 0\, where * y= _i\,,~i\!=\!1,\dots, m/math> is a real vector, * A_0, A_1, A_2,\dots,A_m are n\times n ...
– * Linear motor – * Linear transformation in rotating electrical machines – *
Linear variable differential transformer The linear variable differential transformer (LVDT) (also called linear variable displacement transformer, linear variable displacement transducer, or simply differential transformer) is a type of electrical transformer used for measuring linear d ...
– *
linear Linearity is the property of a mathematical relationship ('' function'') that can be graphically represented as a straight line. Linearity is closely related to '' proportionality''. Examples in physics include rectilinear motion, the linear ...
– * Lineman (occupation) – *
List of calculus topics {{Calculus This is a list of calculus topics. Limits * Limit (mathematics) * Limit of a function ** One-sided limit * Limit of a sequence * Indeterminate form * Orders of approximation * (ε, δ)-definition of limit *Continuous function Differe ...
– *
List of chemistry topics The following outline is provided as an overview of and topical guide to chemistry: Chemistry is the science of atomic matter (matter that is composed of chemical elements), especially its chemical reactions, but also including its properties, ...
– *
List of railway electrification systems This is a list of the power supply systems that are, or have been, used for tramway and railway electrification systems. Note that the voltages are nominal and vary depending on load and distance from the substation. Many modern trams and trains ...
– * List of electrical engineering topics – * List of electrical engineers – *
List of electronics topics A ''list'' is any set of items in a row. List or lists may also refer to: People * List (surname) Organizations * List College, an undergraduate division of the Jewish Theological Seminary of America * SC Germania List, German rugby unio ...
– *
List of mathematical topics Mathematics is a field of study that investigates topics such as number, space, structure, and change. Philosophy Nature * Definitions of mathematics – Mathematics has no generally accepted definition. Different schools of thought, particular ...
– *
List of people in systems and control This is an alphabetical list of people who have made significant contributions in the fields of system analysis and control theory. Eminent researchers The eminent researchers (born after 1920) include the winners of at least one award of the IE ...
– * List of physics topics – *
List of Russian electrical engineers This list of Russian electrical engineers includes the electrical engineers, inventors and physicist from the Russian Empire, the Soviet Union and the Russian Federation. See also the :Russian electrical engineers. Alphabetical list __NOTOC__ A ...
– * Litz wire – * Load flow study – *
Load following power plant A load-following power plant, regarded as producing mid-merit or mid-priced electricity, is a power plant that adjusts its power output as demand for electricity fluctuates throughout the day. Load-following plants are typically in between base lo ...
– * Load-loss factor – *
Load management Load management, also known as demand-side management (DSM), is the process of balancing the supply of electricity on the network with the electrical load by adjusting or controlling the load rather than the power station output. This can be ach ...
– *
Load profile In electrical engineering, a load profile is a graph of the variation in the electrical load versus time. A load profile will vary according to customer type (typical examples include residential, commercial and industrial), temperature and holi ...
– * Local positioning system – *
LORAN LORAN, short for long range navigation, was a hyperbolic radio navigation system developed in the United States during World War II. It was similar to the UK's Gee system but operated at lower frequencies in order to provide an improved range u ...
– * Lorentz force law – * Loss power – *
Lossless data compression Lossless compression is a class of data compression that allows the original data to be perfectly reconstructed from the compressed data with no loss of information. Lossless compression is possible because most real-world data exhibits statistic ...
– *
Lossy data compression In information technology, lossy compression or irreversible compression is the class of data compression methods that uses inexact approximations and partial data discarding to represent the content. These techniques are used to reduce data siz ...
– *
Loudspeaker A loudspeaker (commonly referred to as a speaker or speaker driver) is an electroacoustic transducer that converts an electrical audio signal into a corresponding sound. A ''speaker system'', also often simply referred to as a "speaker" or ...
– *
Low-pass filter A low-pass filter is a filter that passes signals with a frequency lower than a selected cutoff frequency and attenuates signals with frequencies higher than the cutoff frequency. The exact frequency response of the filter depends on the filt ...
– *
LTI system theory LTI can refer to: * '' LTI – Lingua Tertii Imperii'', a book by Victor Klemperer * Language Technologies Institute, a division of Carnegie Mellon University * Linear time-invariant system, an engineering theory that investigates the response o ...
– *
Lumen (unit) The lumen (symbol: lm) is the unit of luminous flux, a measure of the total quantity of visible light emitted by a source per unit of time, in the International System of Units (SI). Luminous flux differs from power ( radiant flux) in that radi ...
– * Lumped parameters – *
Lyapunov stability Various types of stability may be discussed for the solutions of differential equations or difference equations describing dynamical systems. The most important type is that concerning the stability of solutions near to a point of equilibrium. ...
– * Lynch motor –


M

*
Macroscopic The macroscopic scale is the length scale on which objects or phenomena are large enough to be visible with the naked eye, without magnifying optical instruments. It is the opposite of microscopic. Overview When applied to physical phenomena a ...
– *
Machine learning Machine learning (ML) is a field of inquiry devoted to understanding and building methods that 'learn', that is, methods that leverage data to improve performance on some set of tasks. It is seen as a part of artificial intelligence. Machine ...
-- * Magnet wire – *
Magnet A magnet is a material or object that produces a magnetic field. This magnetic field is invisible but is responsible for the most notable property of a magnet: a force that pulls on other ferromagnetic materials, such as iron, steel, nicke ...
– *
Magnetic blowout :''In semiconductor testing, contactors can also be referred to as the specialized socket that connects the device under test.'' :''In process industries, a contactor is a vessel where two streams interact, for example, air and liquid. See Gas ...
– * Magnetic circuit – * Magnetic constant – * Magnetic core – *
Magnetic-core memory Magnetic-core memory was the predominant form of random-access computer memory for 20 years between about 1955 and 1975. Such memory is often just called core memory, or, informally, core. Core memory uses toroids (rings) of a hard magneti ...
– * Magnetic field – * Magnetic flux density – * Magnetic flux – * Magnetic moment – * Magnetics – * Magnetism – * Magnetization – * Magnetization current – * Magnetostatics – * Magnetostriction – * Magnifying transmitter – * Main distribution frame – * Mainframe computer – * Mains electricity – * Mains hum – * Mains power systems – * Manitoba Hydro – * Manufacturing engineering – * Marginal stability – * Marine energy – * Marx generator – * Maser – * Massachusetts Institute of Technology – * Mathematical model – * Mathematics – * Matrix (mathematics) – * Maximum prospective short-circuit current – * Maxwell equations – * Maxwell's equations – * Mead and Conway revolution – * Mean free path – * Measurement – * Mechanical rectifier – * Mechatronics – * Medical equipment – * Memistor – * Mendocino motor – * Mercury-arc rectifier – * Mercury-arc valve – * Mercury-vapor lamp – * Mesh analysis – * Mesh networking – * Mesh – * Metadyne – * Metal detector – * Metal rectifier – * Metalworking – * Micro combined heat and power – * Microcontroller – * Microelectromechanical systems – * Microelectronics – * Microfabrication – * Microgeneration – * Microphone – * Microprocessor – * Microprocessors – * Microwave oven – * Microwave radio – * Microwave – * Millman's theorem – * Mineral-insulated copper-clad cable – * Mobile phone – * Modbus – * Model predictive control – * Modem – * Modulation transformer – * Modulation – * Monoscope – * Moon landing – * Moore's law – * Morse code – * MOSFET – * Motion control – * Motor controller – * Motor soft starter – * Mp3 – * MRI – * Multics – * Multimeter – * Multisim –


N

* Nameplate capacity – * Nanoengineering – * Nanoinverter – * Nanomotor – * Nanotechnology – * National electric code – * National Electrical Manufacturers Association, National Electrical Manufacturers Association (NEMA) – * Natural gas – * Negative feedback – * Negative resistance – * Negawatt power – * Nelson River Bipole – * Neodymium magnets – * Neon sign – * Neon-sign transformer – * Net metering – * Network analyzer (AC power)-- * Network cable – * Network protector – * Neural networks – * Newcastle-upon-Tyne Electric Supply Company – * Niagara Falls – * Nodal analysis – * Node (circuits) – * Noise cancelling – * Noise reduction – * Nominal impedance – * Nonlinear control – * Nonode – * Norton theorem – * Norton's theorem – * Notch filter – * NTSC – * Nuclear power – * Numerical control – * Nuvistor – * Nyquist frequency – * Nyquist stability criterion – * Nyquist–Shannon sampling theorem –


O

* Observability – * Occupations in electrical/electronics engineering – * Ohm – * Ohmmeter – * Ohm's law – * Oil shale – * One-line diagram – * On-premises wiring – * Open-circuit test – * Open-circuit voltage – * Open-circuit time constant method – * Open-circuit voltage – * Operational amplifier – * Optical fiber – * Optimal control – * Oscillation – * Oscilloscope – * Oudin coil – * Out of phase – * Outline of electrical engineering – * Overhead line – * Oversampling – * Overshoot (signal) – * Overvoltage – * Oxidation – * Oxygen – * Oxygen-free copper –


P

* Pad-mounted transformer – * Pantograph (rail) – * Paraformer – * Parameter estimation – * Park transform – * Park's transformation – * Partial discharge – * Passivity (engineering) – * Patch cables – * Peak demand – * Pearl Street Station – * Peltier–Seebeck effect – * Pentagrid converter – * Pentode – * Permanent magnet synchronous generator – * Permanent magnet – * Permeability (electromagnetism) – * Personal computer – * Personal digital assistant – * Perturbation theory – * Petroleum – * pH meter – * Phase (waves) – * Phase converter – * Phase-fired controllers – * Phase-locked loop – * Phase modulation – * Phasor – * Phasor measurement unit – * Phasor – * Phonograph – * Photocell – * Photodetector – * Photodiode – * Photometer – * Photonics – * Photoresistor – * Phototransistor – * Physics – * Physis – * PID controller – * Piezoelectric effect – * Piezoelectric motor – * Pigovian tax – * PIN diode – * Pirelli – * Planar graph – * Plasma (physics) – * Plenum cable – * Plug-in hybrid – * P-N junction – * Polarization density – * Polyethylene – * Polymer – * Polyphase coil – * Polyphase system – * Polypropylene – * Polytetrafluoroethylene – * Pontryagin's minimum principle – * Port (circuit theory) – * Positive feedback – * Potential difference – * Potentiometer – * Potentiometers – * Power (physics), Power – * Power BJT – * Power cable – * Power conditioner – * Power consumption – * Power converter – * Power distribution – * Power electronics – * Power engineering – * Power-factor correction – * Power factor – * Power-flow study – * Power generation – * Power grid – * Power inverter – * Power inverter – * Power-line carrier communication – * Power-line communication – * Power MOSFET – * Power plant – * Power rating – * Power quality – * Power station – * Power storage – * Power supplies – * Power-system automation – * Power-system protection – * Precious metal – * Pressure – * Printed circuit board – * Printer (computing) – * Process control – * Product lifecycle management – * Product safety – * Professional communication – * Professional engineer – * Programmable logic controller – * Programming language – * Project management – * Projection (mathematics) – * Prolec GE – * Protective relay – * Proximity effect (electromagnetism) – * Pulse transformer – * Pulse-width modulation – * Pulse-amplitude modulation, Pulse-amplitude modulation (PAM) – * Pulse-code modulation – * Pumped-storage hydroelectricity – * Push switch – * Push–pull converter –


Q

* Quadrature booster – * Qualitative data – * Quality (business), Quality – * Quality control – * Quality factor – * Quantity – * Quantization (signal processing) –


R

* Radar cross-section – * Radar – * Radio frequency – * Radio transmitter – * Radio – * Railroad – * Railway electrification system – * Rankine cycle – * Rapid transit – * Reactive power – * Real-time operating system – * Receiver (radio) – * Rechargeable battery – * Reciprocity (electromagnetism) – * Record player – * Rectifier – * Rectiformer – * Recursive least squares – * Reed switch – * Regenerative braking – * Regenerative circuit – * Reis telephone – * Relaxation oscillator – * Relay – * Reliability engineering – * Reluctance motor – * Remanence – * Remote racking system – * Remote Sensing – * Renewable electricity – * Renewable Energy Certificates – * Renewable energy payments – * Renewable energy policy – * Repeating coil – * Repowering – * Repulsion motor – * Resettable fuse – * Residual-current device, Residual-current circuit breaker – * Resistive circuit – * Resistivity – * Resistor – * Resistors – * Resolver (electrical) – * Resonant cavity – * Resonant inductive coupling – * Reverse engineering – * RF connector – * RF engineering – * RG-6 – * Rheoscope – * Rheostat – * Right hand grip rule – * Ripple (electrical) – * RLC circuit – * Robotics – * Robust control – * Rogowski coil – * Root locus – * Root mean square – * Rotary converter – * Rotary encoder – * Rotary switch – * Rotary transformer – * Rotary variable differential transformer – * Rotation (mathematics) – * Rotor (electric) – * Routh–Hurwitz stability criterion – * Routh–Hurwitz theorem –


S

* Sallen–Key filter – * Sample and hold – * Sampling (information theory) – * Sampling frequency – * Satellite radio – * Satellite – * Saturation (magnetic) – * SCADA – * Schmitt trigger – * Schottky diode – * Scott-T transformer – * s-domain – * SDTV – * Segmentation (image processing) – * Selenium rectifiers – * Semiconductor device – * Semiconductor fabrication – * Semiconductor – * Sensor – * Serial communication – * Series and parallel circuits – * SETI – * Shaded-pole motor – * Shaft voltage – * Shielded twisted pair – * Short-circuit test – * Short circuit – * Shunt (electrical) – * SI – * Siemens & Halske – * Siemens (unit) – * Siemens – * Signal (electrical engineering) – * Signal (information theory) – * Signal noise – * Signal processing – * Signal strength – * Signal-flow graph – * Signal-to-noise ratio – * Silicon controlled rectifier – * Silicon Valley – * Silicon – * Silver – * Sine wave – * Single-phase electric power – * Single-phase – * Single-sideband modulation – * Skin effect – * Sliding mode control – * Slip ring – * Small signal model – * Smart grid – * Smith chart – * Snowy Mountains scheme – * Software engineering – * Software – * Solar cell – * Solar energy – * Solar micro-inverter – * Solar power plants in the Mojave Desert – * Solar power – * Soldering – * Solenoid – * Solid state (electronics) – * Solid state physics – * Solid-state circuit – * Sound recording – * Space flight – * Space vector modulation – * Spark spread – * Spark-gap transmitter – * Spectrum analyzer – * Speech processing – * SPICE – * Split phase – * Square wave – * Stability theory – * Stable polynomial – * Stacking factor – * Star-mesh transform – * State observer – * State-space representation – * Static VAR compensator – * Stator – * Steady-state – * Steam turbine – * Steel – * Step response – * Stepper motor – * Stereophonic sound – * Stokes' theorem – * Storage tube – * Stray capacitance – * Structure gauge – * Structured cabling – * Submarine communications cable – * Sulfur hexafluoride circuit breaker – * Sulfur hexafluoride – * Sun Microsystems – * Super grid – * Supercomputer – * Superconducting electric machine – * Superconductivity – * Superfluid – * Superheterodyne receiver – * Superposition theorem – * Surge arrester – * Surge protection – * Switch – * Switched reluctance motor – * Switched-mode power supply – * Switchgear – * Symbolic circuit analysis – * Symmetrical components – * Synchro – * Synchronization (alternating current) – * Synchronous circuit – * Synchronous motor – * Synchronous rectification – * Synchroscope – * Syncom – * System identification – * System on a chip – * System on module – * Systems analysis –


T

* Tachometer – * Tap (transformer) – * Tap changer – * Taylor series – * Technical drawing – * Technology – * Telecommunication – * Telecommunications cable – * Telecommunications engineering – * Telecommunications Industry Association – * Telecommunications – * Telegraph – * Telephone balance unit – * Telephone line – * Telephone – * Television – * Tellegen's theorem – * Temperature – * Tensile strength – * Tensile stress – * Tesla (unit) – * Tesla coil – * Tetrode – * Thermal conductivity – * Thermal expansion – * Thermionic emission – * Thermistor – * Thermocouple – * Thermodynamic efficiency – * Thermodynamics – * Thermoelectric effect – * Thermostat – * Thévenin theorem – * Third rail – * Three-phase AC railway electrification – * Three-phase electric power – * Three-phase power – * Three-phase – * Thyristor drive – * Thyristor – * Tidal power – * Time sharing – * Time-invariant system – * Timeline of electrical and electronic engineering – * Tin – * Topology (electrical circuits) – * Toroidal inductors and transformers – * Torque – * Total harmonic distortion, Total harmonic distortion (THD) – * Traction battery – * Traction current – * Traction motor – * Traction substation – * Transatlantic communications cable – * Transatlantic telegraph cable – * Transceiver – * Transducers – * Transfer function – * Transformer oil testing – * Transformer oil – * Transformer types – * Transformer – * Transformerboard – * Transient response – * Transils – * Transistor – * Transistors – * Transmission (telecommunications) – * Transmission line – * Transmission system operator – * Transmission tower – * Transmitter – * Traveling-wave tube – * Trembler coil – * TRIAC – * Triangle wave – * Trigger transformer – * Triode – * Trolley pole – * Trolleybus – * TRW Inc. – * Tuned circuit – * Twisted pair – * Two-phase electric power – * Two-port network – * Two-sided Laplace transform – * Tyco Electronics – * Types of capacitor –


U

* Ubiquitous computing – * Ultrasonic motor – * Ultrasonics – * Undersampling – * Underwriters Laboratories – * Unijunction transistor – * Unipolar motor – * University College London – * University of Missouri – * Unix – * Unshielded twisted pair – * Upsampling – * Utility frequency – * Utility pole –


V

* Vacuum capacitor – * Vacuum tube – * Variable capacitor – * Variable-frequency drive – * Variac – * Varicap – * Variety (cybernetics) – * Varistor – * Varnish – * Vector (geometric) – * Vector calculus – * Vector control (motor) – * Vector group – * Vehicle-to-grid – * Vehicular automation – * Velcro – * Versorium – * Vibrator (electronic) – * Video camera tube – * Video game console – * Video processing – * Virtual instrumentation – * Virtual power plant – * VLSI – * Volt – * Voltage compensation – * Voltage-controlled amplifier – * Voltage controller – * Voltage converter – * Voltage division – * Voltage doubler – * Voltage regulation – * Voltage regulator – * Voltage source – * Voltage spike – * Voltage – * Voltage-to-current converter – * Volt-ampere – * Voltmeter – * Volumetric flow rate –


W

* War of the currents – * Ward Leonard control – * Watt – * Wattmeter – * Waveguide (electromagnetism) – * Waveguide – * Weber (unit), Weber – * Welding – * Wet transformer (disambiguation), Wet transformer – * Whitaker Foundation – * Whole-life cost – * Wiener filter – * Wiener process – * Williams tube – * Wind farm – * Wind power in South Australia – * Wind power – * Wind speed – * Wind turbine – * Wire – * Wireless network – * Wireless telegraphy –


X

* X-ray –


Y

* Yagi antenna – * Yahoo – * Y-delta transform –


Z

* Z3 (computer) – * z80 – * Zener diode – * Zigzag transformer – * Zilog – * Z-transform –


Biographies


A

* Norman Abramson, Abramson, Norman – * Comfort A. Adams, Adams, Comfort A. – * Ernst Alexanderson, Alexanderson, Ernst * George Biddell Airy, Airy, George Biddell – * André-Marie Ampère, Ampère, André-Marie – * Vladimir Andreevich Yakubovich, Yakubovich, Vladimir – * Edwin Armstrong, Armstrong, Edwin – * William Edward Ayrton, Ayrton, William Edward – * William Ross Ashby, Ashby, William Ross –


B

* John Bardeen, Bardeen, John – * Emile Baudot, Baudot, Emile – * Andy Bechtolsheim, Bechtolsheim, Andy – * Arnold Orville Beckman, Beckman, Arnold Orville – * Alexander Graham Bell, Bell, Alexander Graham – * Richard Bellman, Bellman, Richard – * Alfred Rosling Bennett, Bennett, Alfred Rosling – * Ottó Bláthy, Bláthy, Ottó – * André Blondel, Blondel, André – * Alan Blumlein, Blumlein, Alan – * Hendrik Wade Bode, Bode, Hendrik Wade – * Nikolay Bogoliubov, Bogoliubov, Nikolay – * Paul Boucherot, Boucherot, Paul – * Walter Brattain, Brattain, Walter – * Karl Ferdinand Braun, Braun, Karl Ferdinand – * Karlheinz Brandenburg, Brandenburg, Karlheinz – * Charles Eugene Lancelot Brown, Brown, Charles Eugene Lancelot – * William C. Brown, Brown, William C. – * Charles Tilston BBright, Charles Tilston – * Walter Bruch, Bruch, Walter – * Charles F. Brush, Brush, Charles F. – * Charles Frederick Burgess, Burgess, Charles Frederick –


C

* Marvin Camras, Camras, Marvin – * Alan Archibald Campbell-Swinton, Campbell-Swinton, Alan Archibald – * John Renshaw Carson, Carson, John Renshaw – * James Kilton Clapp, Clapp, James Kilton – * Edith Clarke, Clarke, Edith – * William David Coolidge, Coolidge, William – * Charles Concordia, Concordia, Charles – * Lynn Conway, Conway, Lynn – * William Corin, Corin, William – * R. E. B. Crompton, Crompton, R. E. B. – * Seymour Cray, Cray, Seymour –


D

* Sidney Darlington, Darlington, Sidney – * Georges Jean Marie Darrieus, Darrieus, George – * Thomas Davenport (inventor), Davenport, Thomas – * Lee De Forest, De Forest, Lee – * Georges de Mestral, de Mestral, Georges – * Robert H. Dennard, Dennard, Robert H. – * Jack Dennis, Dennis, Jack – * Marcel Deprez, Deprez, Marcel – * Miksa Déri, Déri, Miksa – * Bern Dibner, Dibner, Bern – * Robert Doherty (college president), Doherty, Robert – * Mikhail Dolivo-Dobrovolsky, Dolivo-Dobrovolsky, Mikhail – * Ray Dolby, Dolby, Ray – * William Duddell, Duddell, William – * Allen B. DuMont, DuMont, Allen B. –


E

* John Presper Eckert, Eckert, John Presper – * Thomas Edison, Edison, Thomas – * Douglas Engelbart, Engelbart, Douglas – * Justus B. Entz, Entz, Justus B. – * Agner Krarup Erlang, Erlang, Agner Krarup – * Lloyd Espenschied, Espenschied, Lloyd – * Walter R. Evans, Evans, Walter R. – * Leonhard Euler, Euler, Leonhard –


F

* Federico Faggin, Faggin, Federico – * Michael Faraday, Faraday, Michael – * Moses G. Farmer, Farmer, Moses G. – * Philo T. Farnsworth, Farnsworth, Philo T. – * Sebastian Ziani de Ferranti, Ferranti, Sebastian Ziani de – * Galileo Ferraris, Ferraris, Galileo – * Reginald Fessenden, Fessenden, Reginald – * Donald G. Fink, Fink, Donald G. – * Gerhard Fischer (inventor), Fischer, Gerhard – * John Ambrose Fleming, Fleming, John Ambrose – * Tommy Flowers, Flowers, Thomas – * Hippolyte Fontaine, Fontaine, Hippolyte – * George Forbes (scientist), Forbes, George – * Jay Forrester, Forrester, Jay – * Charles Legeyt Fortescue, Fortescue, Charles Legeyt – * Jean Baptiste Joseph Fourier, Fourier, Jean Baptiste Joseph – * Leonard F. Fuller, Fuller, Leonard F. –


G

* Dennis Gabor, Gabor, Dennis – * Lucien Gaulard, Gaulard, Lucien – * Carl Friedrich Gauss, Gauss, Carl Friedrich – * William Gilbert (astronomer), Gilbert, William – * Giovanni Giorgi, Giorgi, Giovanni – * Zénobe Gramme, Gramme, Zénobe – * Elisha Gray, Gray, Elisha – * Richard Grimsdale, Grimsdale, Richard – * Ernst A. Guillemin, Guillemin, Ernst A. –


H

* Robert Hadfield, Hadfield, Robert – * Edward E. Hammer, Hammer, Edward E. – * Ralph Hartley, Hartley, Ralph – * Johann Georg Halske, Halske, Johann Georg – * Oliver Heaviside, Heaviside, Oliver – * Friedrich von Hefner-Alteneck, Hefner-Alteneck, Friedrich von – * Oskar Heil, Heil, Oskar – * Paul Héroult, Héroult, Paul – * Heinrich Rudolf Hertz, Hertz, Heinrich – * Peter Cooper Hewitt, Hewitt, Peter Cooper – * William Reddington Hewlett, Hewlett, William Reddington – * Marcian Hoff, Hoff, Marcian – * Edward Hopkinson, Hopkinson, Edward – * John Hopkinson, Hopkinson, John – * Grace Hopper, Hopper, Grace – * Paul Horowitz, Horowitz, Paul – * Edwin J. Houston, Houston, Edwin J. – * Baron Hirst, Hirst, Hugo – * Albert Hull, Hull, Albert – * Lawrence A. Hyland, Hyland, Lawrence A. –


I

* Samuel Insull, Insull, Samuel –


J

* Fleeming Jenkin, Jenkin, Fleeming – * Bill Joy, Joy, Bill –


K

* Rudolf Kálmán, Kálmán, Rudolf – * Kálmán Kandó, Kando, Kálmán – * Nathaniel S. Keith, Keith, Nathaniel S. – * Arthur E. Kennelly, Kennelly, Arthur E. – * Charles Kettering, Kettering, Charles – * Jack Kilby, Kilby, Jack – * Max Knoll, Knoll, Max – * Andrey Kolmogorov, Kolmogorov, Andrey – * John D. Kraus, Kraus, John D. – * Herbert Kroemer, Kroemer, Herbert-- * Nikolay Mitrofanovich Krylov, Krylov, Nikolay Mitrofanovich –


L

* Eric Laithwaite, Laithwaite, Eric – * Hedy Lamarr, Lamarr, Hedy – * Uno Lamm, Lamm, Uno – * Benjamin G. Lamme, Lamme, Benjamin G. – * Georges Leclanché, Leclanché, Georges – * Morris E. Leeds, Leeds, Morris E. – * Harry Ward Leonard, Leonard, Harry Ward – * Alexander Lodygin, Lodygin, Alexander – Alexander Lyapunov, Lyapunov, Alexander –


M

* Östen Mäkitalo, Mäkitalo, Östen – * Guglielmo Marconi, Marconi, Guglielmo – * Orlando R. Marsh, Marsh, Orlando R. – * Erwin Otto Marx, Marx, Erwin Otto – * John Mauchly, Mauchly, John – * James Clerk Maxwell, Maxwell, James Clerk – * William Henry Merrill, Merrill, William Henry – * Nicolas Minorsky, Minorsky, Nicolas – * Charles Hesterman Merz, Merz, Charles Hesterman – * Robert Metcalfe, Metcalfe, Robert – * John L. Moll, Moll, John L. – * Robert Moog, Moog, Robert – * Daniel McFarlan Moore, Moore, Daniel McFarlan –


N

* Shuji Nakamura, Nakamura, Shuji – * Nathaniel B. Nichols, Nichols, Nathaniel B. – * Edward Lawry Norton, Norton, Edward Lawry – * Robert Noyce, Noyce, Robert – * Harry Nyquist, Nyquist, Harry –


O

* Georg Ohm, Ohm, Georg – * Bernard M. Oliver, Oliver, Bernard M. – * Kenneth Olsen, Olsen, Kenneth – * Stanford R. Ovshinsky, Ovshinsky, Stanford R. –


P

* David Packard, Packard, David – * Robert H. Park, Park, Robert H. – * Charles Algernon Parsons, Parsons, Charles Algernon – * Donald Pederson, Pederson, Donald – * G. W. Pierce, Pierce, G. W. – * Lev Semenovich Pontryagin, Pontryagin, Lev Semenovich – * Franklin Leonard Pope, Pope, Franklin Leonard – * Vasile M. Popov, Popov, Vasile M. – * Valdemar Poulsen, Poulsen, Valdemar – * William Henry Preece, Preece, William Henry – * Michael I. Pupin, Pupin, Michael I. –


R

* John R. Ragazzini, Ragazzini, John R. – * Simon Ramo, Ramo, Simon – * Richard H. Ranger, Ranger, Richard H. – * Alec Reeves, Reeves, Alec – * Johann Philipp Reis, Reis, Johann Philipp – * Hyman G. Rickover, Rickover, Hyman G. – * Edward S. Rogers, Sr., Rogers, Edward S. Sr. – * Harold Rosen (electrical engineer), Rosen, Harold – * H. J. Round, Round, H. J. – * Edward John Routh, Routh, Edward John – * Reinhold Rudenberg, Rudenberg, Reinhold –


S

* Carl Louis Schwendler, Schwendler, Carl Louis – * Thomas Johann Seebeck, Seebeck, Thomas Johann – * Claude E. Shannon, Shannon, Claude E. – * Oliver B. Shallenberger, Shallenberger, Oliver B. – * William B. Shockley, Shockley, William B. – * Philipp Ludwig von Seidel, Siedel, Philipp Ludwig – * Kees A. Schouhamer Immink, Schouhamer Immink, Kees A. – * Alexander Siemens, Siemens, Alexander – * Carl Wilhelm Siemens, Siemens, Carl Wilhelm – * Ernst Werner von Siemens, Siemens, Ernst Werner von – * Phillip Hagar Smith, Smith, Phillip Hagar – * Percy Spencer, Spencer, Percy – * Frank J. Sprague, Sprague, Frank J. – * William Stanley, Jr., Stanley, William, Jr. – * Chauncey Starr, Starr, Chauncey – * Charles Proteus Steinmetz, Steinmetz, Charles Proteus –


T

* Sarkes Tarzian, Tarzian, Sarkes – * Albert H. Taylor, Taylor, Albert H. – * Bernard D. H. Tellegen, Tellegen, Bernard D. H. – * Nikola Tesla, Tesla, Nikola – * Elihu Thomson, Thomson, Elihu – * Silvanus P. Thompson, Thompson, Silvanus P. – * William Thomson, 1st Baron Kelvin, Thomson, William – * René Thury, Thury, René – * Kálmán Tihanyi, Tihanyi, Kálmán – * John Tukey, Tukey, John –


V

* Charles Joseph Van Depoele, Van Depoele, Charles Joseph – * C. F. Varley, Varley, C. F. – * Milan Vidmar, Vidmar, Milan – * Andrew Viterbi, Viterbi, Andrew – * Alessandro Volta, Volta, Alessandro – * Robert von Lieben, von Lieben, Robert – * Oskar von Miller, von Miller, Oskar –


W

* Trevor Wadley, Wadley, Trevor – * Robert Watson-Watt, Watson-Watt, Robert – * James Watt, Watt, James – * George Westinghouse, Westinghouse, George – * Charles Wheatstone, Wheatstone, Charles – * Harold Alden Wheeler, Wheeler, Harold Alden – * Uncas A. Whitaker, Whitaker, Uncas A. – * Bob Widlar, Widlar, Bob – * Norbert Wiener, Wiener, Norbert – * Niklaus Wirth, Wirth, Niklaus – * Steve Wozniak, Wozniak, Steve –


Y

* Pavel Yablochkov, Yablochkov, Pavel – * Hidetsugu Yagi, Yagi, Hidetsugu – * Jerry Yang (entrepreneur), Yang, Jerry – {{anchor, Z-n


Z

* George Zames, Zames, George – * Otto Julius Zobel, Zobel, Otto Julius – * Konrad Zuse, Zuse, Konrad – Electrical-engineering-related lists Electronics lists, Electrical engineering topics (alphabetical) Indexes of engineering topics, Electrical engineering topics (alphabetical)