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5965
The 5965 is a miniature twin triode vacuum tube (thermionic valve) "designed for use in high-speed digital computers". According to an MIT Project Whirwind memorandum, the tube was developed c.1953 for IBM by GE, primarily for use in the IBM 701 computer, and was designated as a general-purpose triode tube. In European use the tube was labelled E180CC; sometimes the same tube was labelled with both names. See also * 7AK7, a popular type of tube found in early digital computers * 25L6 The 25L6 is an octal-based vacuum tube of the Beam tetrode type. It is the Octal base equivalent to thtype '43 power tubewhich made early AC-powered loudspeaker radios affordable. It found common application in AC/DC radio receivers - such as tho ..., another type of tube found in early computers References {{reflist Computer vacuum tubes ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Twin Triode Vacuum Tube Numbered Base Schematic
Twins are two offspring produced by the same pregnancy.MedicineNet > Definition of TwinLast Editorial Review: 19 June 2000 Twins can be either ''monozygotic'' ('identical'), meaning that they develop from one zygote, which splits and forms two embryos, or ''dizygotic'' ('non-identical' or 'fraternal'), meaning that each twin develops from a separate egg and each egg is fertilized by its own sperm cell. Since identical twins develop from one zygote, they will share the same sex, while fraternal twins may or may not. In rare cases twins can have the same mother and different fathers (heteropaternal superfecundation). In contrast, a fetus that develops alone in the womb (the much more common case, in humans) is called a ''singleton'', and the general term for one offspring of a multiple birth is a ''multiple''. Unrelated look-alikes whose resemblance parallels that of twins are referred to as doppelgängers. Statistics The human twin birth rate in the United States rose 76% from ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Triode
A triode is an electronic amplifying vacuum tube (or ''valve'' in British English) consisting of three electrodes inside an evacuated glass envelope: a heated filament or cathode, a grid, and a plate (anode). Developed from Lee De Forest's 1906 Audion, a partial vacuum tube that added a grid electrode to the thermionic diode ( Fleming valve), the triode was the first practical electronic amplifier and the ancestor of other types of vacuum tubes such as the tetrode and pentode. Its invention founded the electronics age, making possible amplified radio technology and long-distance telephony. Triodes were widely used in consumer electronics devices such as radios and televisions until the 1970s, when transistors replaced them. Today, their main remaining use is in high-power RF amplifiers in radio transmitters and industrial RF heating devices. In recent years there has been a resurgence in demand for low power triodes due to renewed interest in tube-type audio systems by ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vacuum Tube
A vacuum tube, electron tube, valve (British usage), or tube (North America), is a device that controls electric current flow in a high vacuum between electrodes to which an electric voltage, potential difference has been applied. The type known as a thermionic tube or thermionic valve utilizes thermionic emission of electrons from a hot cathode for fundamental electronic functions such as signal amplifier, amplification and current rectifier, rectification. Non-thermionic types such as a vacuum phototube, however, achieve electron emission through the photoelectric effect, and are used for such purposes as the detection of light intensities. In both types, the electrons are accelerated from the cathode to the anode by the electric field in the tube. The simplest vacuum tube, the diode (i.e. Fleming valve), invented in 1904 by John Ambrose Fleming, contains only a heated electron-emitting cathode and an anode. Electrons can only flow in one direction through the device—fro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Massachusetts Institute Of Technology
The Massachusetts Institute of Technology (MIT) is a Private university, private Land-grant university, land-grant research university in Cambridge, Massachusetts. Established in 1861, MIT has played a key role in the development of modern technology and science, and is one of the most prestigious and highly ranked academic institutions in the world. Founded in response to the increasing Technological and industrial history of the United States, industrialization of the United States, MIT adopted a European History of European universities, polytechnic university model and stressed laboratory instruction in applied science and engineering. MIT is one of three private land grant universities in the United States, the others being Cornell University and Tuskegee University. The institute has an Campus of the Massachusetts Institute of Technology, urban campus that extends more than a mile (1.6 km) alongside the Charles River, and encompasses a number of major off-campus fa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Whirlwind I
Whirlwind I was a Cold War-era vacuum tube computer developed by the MIT Servomechanisms Laboratory for the U.S. Navy. Operational in 1951, it was among the first digital electronic computers that operated in real-time for output, and the first that was not simply an electronic replacement of older mechanical systems. It was one of the first computers to calculate in parallel (rather than serial), and was the first to use magnetic-core memory. Its development led directly to the Whirlwind II design used as the basis for the United States Air Force SAGE air defense system, and indirectly to almost all business computers and minicomputers in the 1960s, particularly because of the mantra "short word length, speed, people." Background During World War II, the U.S. Navy's Naval Research Lab approached MIT about the possibility of creating a computer to drive a flight simulator for training bomber crews. They envisioned a fairly simple system in which the computer would cont ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
IBM 701
The IBM 701 Electronic Data Processing Machine, known as the Defense Calculator while in development, was IBM’s first commercial scientific computer and its first series production mainframe computer, which was announced to the public on May 21, 1952. It was invented and developed by Jerrier Haddad and Nathaniel Rochester based on the IAS machine at Princeton. The IBM 701 was the first computer in the IBM 700/7000 series, which were IBM’s high-end computers until the arrival of the IBM System/360 in 1964. The business-oriented sibling of the 701 was the IBM 702 and a lower-cost general-purpose sibling was the IBM 650, which gained fame as the first mass-produced computer in the world. History IBM 701 competed with Remington Rand's UNIVAC 1103 in the scientific computation market, which had been developed for the NSA, so it was held secret until permission to market it was obtained in 1951. In early 1954, a committee of the Joint Chiefs of Staff requested that the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mullard–Philips Tube Designation
In Europe, the principal method of numbering vacuum tubes ("thermionic valves") was the nomenclature used by the Philips Koninklijke Philips N.V. (), commonly shortened to Philips, is a Dutch multinational conglomerate corporation that was founded in Eindhoven in 1891. Since 1997, it has been mostly headquartered in Amsterdam, though the Benelux headquarters is ... company and its subsidiaries Mullard in the UK, Valvo(:de:Valvo, de, :it:Valvo, it) in Germany, Radiotechnique (''Miniwatt-Dario'' brand) in France, and Amperex Electronic, Amperex in the United States, from 1934 on. Adhering manufacturers include AEG (de), La Compagnie des Lampes#Compagnie des Lampes (1921), CdL (1921, ''French Mazda (light bulb)#Mazda brand licensees, Mazda'' brand), Compagnie Industrielle Française des Tubes Electroniques, CIFTE (fr, ''Mazda-Belvu'' brand), Edison and Swan Electric Light Company, EdiSwan (''British Mazda'' brand), C ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
7AK7
The 7AK7 is a pentode vacuum tube (thermionic valve). According to its manufacturer, Sylvania, it was "designed for service in electronic computers". The tube was developed in 1948, designed at the request of L. D. Wilson for use in the Whirlwind computer. Significant attention was directed towards its manufacturing process in order to ensure the part's reliability. Dubbed the "computer tube", it became the standard tube for all computers into the late 1950s. See also * 25L6 The 25L6 is an octal-based vacuum tube of the Beam tetrode type. It is the Octal base equivalent to thtype '43 power tubewhich made early AC-powered loudspeaker radios affordable. It found common application in AC/DC radio receivers - such as tho ..., another type of tube found in early computers References {{comp-hardware-stub Vacuum tubes ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
25L6
The 25L6 is an octal-based vacuum tube of the Beam tetrode type. It is the Octal base equivalent to thtype '43 power tubewhich made early AC-powered loudspeaker radios affordable. It found common application in AC/DC radio receivers - such as those of the All American Five type - and was also found in large numbers in early computers, such as the UNIVAC I. The tube used EIA base 7AC in common with many other power tubes. The tube was identical in design and ratings with the 50L6 with the exception of having a 25 volt 300 mA heater, whereas the 50L6 has a 50 volt 150 mA heater. The 12L6 and identical 12W6 were made with a 12 volt, 600 mA heater, and the 6W6 was made with a 6.3V, 1200mA heater. There was also a 35L6 with a 35V, 150 mA heater. Because of the slightly lower-power heater, the 35L6 has slightly lower output than the rest of the family. This family is not to be confused with the 6L6, which has the same basing diagram, but has more than twice the power capability ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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