Transistor ? ? ? The first transistor Transistor, whose real name is the semiconductor transistor. It contains two PN junction of internal and external electrodes are usually three leads of semiconductor devices on the electrical signals are amplified and switch roles. Experienced a point contact transistor transistor, junction transistor to the new course of development of the transistor. In 1947, the United States Bell Labs physicist Shockley (William Shockley ,1910-1989), Badin (John Bardeen ,1908-1991) and Bratton (Walter Houser Brattain ,1902-1987) successfully developed the world&#39;s first transistors. This is the use of two contacts in close proximity of the tentacles made of the &quot;point-contact transistor&quot;, can the audio signal amplification 100 times. Point-contact transistor manufacturing process there is complex, noisy, narrow scope of the disadvantages. To this end, Shockley proposed to &quot;end rectifier&quot; in place of the idea of metal semiconductor contacts. In 1950, based on this idea come out of germanium junction transistor. Since then, a variety of new transistor constantly being invented, such as the alloy transistor, drift transistor, the transistor table, flat transistors, epitaxial transistor, metal oxide semiconductor transistors, power transistors. Transistor is the greatest invention of the 20th century is one of the microelectronics revolution herald. Compared with the tube, transistor size greatly reduced, because of its low cost, flexibility and reliability characteristics have been widely used in telecommunications, radio and television, computers and other electronics industries, and later laid the foundation for the birth of integrated circuits.
Pages to are hidden for
"Transistor Transistor The first transistor Transistor whose real name is the"Please download to view full document