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Hand holds transistors from the 1960s to 1990s

Hand holds transistors from the 1960s to 1990s

T356/0373

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Credit

TONY CRADDOCK / SCIENCE PHOTO LIBRARY TONY CRADDOCK / SCIENCE PHOTO LIBRARY

Caption

Transistors. Hand holds an assortment of transist- ors from the 1960s to the 1980s & 1990s. Transist- ors have many uses in electronic equipment includ- ing amplification & signal processing. Transistors have three wires attached to them - the base, collector & emitter. These are attached to sect- ions of semiconductor in the transistor which have precise levels of impurities to determine their electrical properties. The amplification of the current from emitter to collector is determin- ed by the voltage of the base wire. Transistors have allowed the miniaturisation of electronic components. The first transistor was invented on 23 December 1947 by Bardeen, Brattain & Shockley.

Release details

Model release not required. Property release not required.

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