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Printed Circuit Board
A printed circuit board (PCB), also called printed wiring board (PWB), is a Lamination, laminated sandwich structure of electrical conduction, conductive and Insulator (electricity), insulating layers, each with a pattern of traces, planes and other features (similar to wires on a flat surface) Chemical milling, etched from one or more sheet layers of copper laminated onto or between sheet layers of a non-conductive substrate. PCBs are used to connect or Electrical wiring, "wire" Electronic component, components to one another in an electronic circuit. Electrical components may be fixed to conductive pads on the outer layers, generally by soldering, which both electrically connects and mechanically fastens the components to the board. Another manufacturing process adds Via (electronics), vias, metal-lined drilled holes that enable electrical interconnections between conductive layers, to boards with more than a single side. Printed circuit boards are used in nearly all e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
SEG DVD 430 - Printed Circuit Board-4276
SEG or seg may refer to: Organisations * Society of Economic Geologists * Society of Exploration Geophysicists * Semaphore Entertainment Group, co-founder of the Ultimate Fighting Championship * Southern Examining Group, a former English examining body * Special Escort Group (Metropolitan Police), England * Special Escort Group (Ministry of Defence Police) (SEG (MDP)), UK Transport * Penn Valley Airport IATA code * Selling railway station, Kent, England (National Rail station code SEG) Other uses * Smart Export Guarantee, a scheme which rewards export of electricity by small-scale low-carbon generators in the United Kingdom * ''Supplementum Epigraphicum Graecum'', new studies of ancient Greek inscriptions * ''Ség.'', taxonomic author abbreviation of Jean-François Séguier (1703–1784), French botanist See also * Segment (other) * * * * {{disambiguation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Crimp (electrical)
Crimping is a method of joining two or more pieces of metal or other ductile material by deforming one or both of them to hold the other. The bend or deformity is called the crimp. Crimping tools are used to create crimps. Crimping is used extensively in metalworking, including to contain bullets in cartridge cases, for electrical connections, and for securing lids on metal food cans. Because it can be a cold-working technique, crimping can also be used to form a strong bond between the workpiece and a non-metallic component. It is also used to connect two pieces of food dough. Tools A crimping tool or crimp tool is used to create crimps. Crimping tools range in size from small handheld devices, to benchtop machines used for industrial purposes, to large fully-automatic wire processing machines for high-volume production. For electrical crimps, a wide variety of crimping tools exist, and they are generally designed for a specific type and size of terminal. Handheld tools ( ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
IEEE Cledo Brunetti Award
The IEEE Cledo Brunetti Award is an award is presented for outstanding contributions to nanotechnology and miniaturization in the electronics arts. It may be presented to an individual or a team of up to three. The award was established in 1975 by the IEEE The Institute of Electrical and Electronics Engineers (IEEE) is an American 501(c)(3) organization, 501(c)(3) public charity professional organization for electrical engineering, electronics engineering, and other related disciplines. The IEEE ... Board of Directors. Recipients of this award receive bronze medal, a certificate and honorarium. Basis for judging: In the evaluation process, the following criteria are considered: innovation, development, social value, uniqueness of concept, other technical accomplishments, and the quality of the nomination. Nomination deadline: 31 January Notification: Recipients are typically approved during the June IEEE Board of Directors meeting, usually held towards the end of the mo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Institute Of Electrical And Electronics Engineers
The Institute of Electrical and Electronics Engineers (IEEE) is an American 501(c)(3) public charity professional organization for electrical engineering, electronics engineering, and other related disciplines. The IEEE has a corporate office in New York City and an operations center in Piscataway, New Jersey. The IEEE was formed in 1963 as an amalgamation of the American Institute of Electrical Engineers and the Institute of Radio Engineers. History The IEEE traces its founding to 1884 and the American Institute of Electrical Engineers. In 1912, the rival Institute of Radio Engineers was formed. Although the AIEE was initially larger, the IRE attracted more students and was larger by the mid-1950s. The AIEE and IRE merged in 1963. The IEEE is headquartered in New York City, but most business is done at the IEEE Operations Center in Piscataway, New Jersey, opened in 1975. The Australian Section of the IEEE existed between 1972 and 1985, after which it split into state- ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Resistor
A resistor is a passive two-terminal electronic component that implements electrical resistance as a circuit element. In electronic circuits, resistors are used to reduce current flow, adjust signal levels, to divide voltages, bias active elements, and terminate transmission lines, among other uses. High-power resistors that can dissipate many watts of electrical power as heat may be used as part of motor controls, in power distribution systems, or as test loads for generators. Fixed resistors have resistances that only change slightly with temperature, time or operating voltage. Variable resistors can be used to adjust circuit elements (such as a volume control or a lamp dimmer), or as sensing devices for heat, light, humidity, force, or chemical activity. Resistors are common elements of electrical networks and electronic circuits and are ubiquitous in electronic equipment. Practical resistors as discrete components can be composed of various compounds and forms. Resisto ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Screenprinting
Screen printing is a printing technique where a mesh is used to transfer ink (or dye) onto a substrate, except in areas made impermeable to the ink by a blocking stencil. A blade or squeegee is moved across the screen in a "flood stroke" to fill the open mesh apertures with ink, and a reverse stroke then causes the screen to touch the substrate momentarily along a line of contact. This causes the ink to wet the substrate and be pulled out of the mesh apertures as the screen springs back after the blade has passed. One colour is printed at a time, so several screens can be used to produce a multi-coloured image or design. Traditionally, silk was used in the process. Currently, synthetic threads are commonly used. The most popular mesh in general use is made of polyester. There are special-use mesh materials of nylon and stainless steel available to the screen-printer. There are also different types of mesh size which will determine the outcome and look of the finished de ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Proximity Fuze
A Proximity Fuse (also VT fuse or "variable time fuze") is a fuse that detonates an explosive device automatically when it approaches within a certain distance of its target. Proximity fuses are designed for elusive military targets such as aircraft and missiles, as well as ships at sea and ground forces. This sophisticated trigger mechanism may increase lethality by 5 to 10 times compared to the common contact fuse or timed fuse. Background Before the invention of the proximity fuze, detonation was induced by direct contact, a timer set at launch, or an altimeter. All of these earlier methods have disadvantages. The probability of a direct hit on a small moving target is low; a shell that just misses the target will not explode. A time- or height-triggered fuze requires good prediction by the gunner and accurate timing by the fuze. If either is wrong, then even accurately aimed shells may explode harmlessly before reaching the target or after passing it. At the start of the Bl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Naval Mine
A naval mine is a self-contained explosive weapon placed in water to damage or destroy surface ships or submarines. Similar to anti-personnel mine, anti-personnel and other land mines, and unlike purpose launched naval depth charges, they are deposited and left to wait until, depending on their fuzing, they are triggered by the approach of or contact with any vessel. Naval mines can be used offensively, to hamper enemy shipping movements or lock vessels into a harbour; or defensively, to create "safe" zones protecting friendly sea lanes, harbours, and naval assets. Mines allow the minelaying force commander to concentrate warships or defensive assets in mine-free areas giving the adversary three choices: undertake a resource-intensive and time-consuming minesweeping effort, accept the casualties of challenging the minefield, or use the unmined waters where the greatest concentration of enemy firepower will be encountered. Although international law requires signatory nations ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paul Eisler
Paul Eisler (3 August 1907 – 26 October 1992) was an Austrian inventor born in Vienna. Among his innovations were the printed circuit board. In 2012, ''Printed Circuit Design & Fab'' magazine named its Hall of Fame after Eisler. Early life and education Paul Eisler was the son of Wilhelm Eisler, who was born in today's Slovakia, and Caecilie Eisler from Bohemia. He studied mechanical engineering at Vienna University of Technology and graduated in 1930. Being Jewish, antisemitic German-Nationalist organizations prevented him from getting an engineering job in Vienna, so he obtained employment with the British Gramophone Company, operating in Belgrade. ; edited with notes by Mari Williams His task there was to eliminate radio interference on the music broadcast system on trains running from Belgrade to Niś. The project was a technical success but a financial failure because the Serbian railroad could only pay the Gramophone Company by barter in grain, not pounds sterling, due a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bakelite
Bakelite ( ), formally , is a thermosetting polymer, thermosetting phenol formaldehyde resin, formed from a condensation reaction of phenol with formaldehyde. The first plastic made from synthetic components, it was developed by Belgian chemist Leo Baekeland in Yonkers, New York, in 1907, and patented on December 7, 1909. Bakelite was one of the first plastic-like materials to be introduced into the modern world and was popular because it could be Molding (process), molded and then hardened into any shape. Because of its electrical nonconductor, nonconductivity and heat-resistant properties, it became a great commercial success. It was used in electrical insulators, radio and telephone casings, and such diverse products as kitchenware, jewelry, pipe stems, children's toys, and firearms. The retro appeal of old Bakelite products has made them collectible. The creation of a synthetic plastic was revolutionary for the chemical industry, which at the time made most of its income f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
John Sargrove
John Sargrove (1906–1974) was a British engineer and automation pioneer. Life and career His parents were ethnically Hungarian, and he was originally named John Adolphe Szabadi, but changed his name to Sargrove in 1938. While employed at British Tungsram Radio Works Ltd (originally British Tungsram Electric Lamps Ltd) he experimented with the idea of creating circuits by spraying metal onto bakelite. He was able to create resistors, capacitors, and inductors, as well as the electrical connections between them, on a single bakelite blank by this process. This work was carried out around 1936 and 1937, several years prior to the development of the printed circuit board by Paul Eisler in 1943. Sargrove also experimented with the development of a 'universal' vacuum tube. His long-term goal, however, was automating the production of radio Radio is the technology of communicating using radio waves. Radio waves are electromagnetic waves of frequency between 3 he ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
