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alloy-type transistor

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  • Alloy-junction transistor — The germanium alloy junction transistor, or alloy transistor, was an early type of bipolar junction transistor, developed at General Electric and RCA in 1951 as an improvement over the earlier grown junction transistor. The usual construction of… …   Wikipedia

  • Transistor — For other uses, see Transistor (disambiguation). Assorted discrete transistors. Packages in order from top to bottom: TO 3, TO 126, TO 92, SOT 23 A transistor is a semiconductor device used to amplify and switch electronic signals and power. It… …   Wikipedia

  • Bipolar junction transistor — BJT redirects here. For the Japanese language proficiency test, see Business Japanese Proficiency Test. PNP …   Wikipedia

  • History of the transistor — Invention of the transistor= The first patent [patent|US|1745175|Julius Edgar Lilienfeld: Method and apparatus for controlling electric current first filed in Canada on 22.10.1925, describing a device similar to a MESFET] for the field effect… …   Wikipedia

  • Surface-barrier transistor — The surface barrier transistor is a type of transistor developed by Philco in 1953 as an improvement to the alloy junction transistor and the earlier point contact transistor. Like the modern schottky transistor, it offered much higher speed than …   Wikipedia

  • Diffusion transistor — A diffusion transistor is any transistor formed by diffusing dopants into a semiconductor substrate. Diffusion transistors include some types of both bipolar junction transistors and field effect transistors. The diffusion process was developed… …   Wikipedia

  • p-n junction — A silicon p–n junction with no applied voltage. A p–n junction is formed at the boundary between a P type and N type semiconductor created in a single crystal of semiconductor by doping, for example by ion implantation, diffusion of dopants, or… …   Wikipedia

  • Spacistor — The spacistor [cite book last = Wolf first = Oswald coauthors = R. T. Kramer; J. Spiech; H. Shleuder title = Special Purpose Transistors: A Self Instructional Programmed Manual publisher = Prentice Hall year = 1966 pages = pp. 103 117] was a type …   Wikipedia

  • technology, history of — Introduction       the development over time of systematic techniques for making and doing things. The term technology, a combination of the Greek technē, “art, craft,” with logos, “word, speech,” meant in Greece a discourse on the arts, both… …   Universalium

  • Resistor — A typical axial lead resistor Type Passive Working principle Electrical resistance Invented Ge …   Wikipedia

  • Vacuum tube — This article is about the electronic device. For experiments in an evacuated pipe, see free fall. For the transport system, see pneumatic tube. Modern vacuum tubes, mostly miniature style In electronics, a vacuum tube, electron tube (in North… …   Wikipedia

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