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surface-alloy transistor

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  • 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

  • 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

  • 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

  • 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

  • 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

  • Liste elektrischer Bauelemente — Dieser Artikel listet elektrische beziehungsweise elektronische Bauelemente (auch Bauteile genannt) auf, die man für Schaltungen in der Elektrotechnik beziehungsweise Elektronik benötigt. Verschiedene elektronische Bauelemente Inhaltsverzeichnis …   Deutsch Wikipedia

  • Physical Sciences — ▪ 2009 Introduction Scientists discovered a new family of superconducting materials and obtained unique images of individual hydrogen atoms and of a multiple exoplanet system. Europe completed the Large Hadron Collider, and China and India took… …   Universalium

  • 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

  • Germanium — (pronEng|dʒɚˈmeɪniəm) is a chemical element with the symbol Ge and atomic number 32. It is a lustrous, hard, silver white metalloid in the carbon group, chemically similar to its group neighbors tin and silicon. Germanium has five naturally… …   Wikipedia

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