ELECTRONIC PRINCIPLES - OD1647 - LESSON 1/TASK 2
FIGURE 88. SEMICONDUCTOR DIODE COLOR CODE SYSTEM.
3. Transistors
The discovery of the first transistor in 1948 by a team of
physicists at the Bell Telephone Laboratories sparked an
interest in solidstate research that spread rapidly. The
transistor, which began as a simple laboratory oddity, was
rapidly developed into a semiconductor device of major
importance. The transistor demonstrated for the first time in
history that amplification in solids was possible. Prior to the
transistor, amplification was achieved only with electron tubes.
Transistors now perform numerous electronic tasks with new and
improved transistor designs being continually put on the market.
In many cases, transistors are more desirable than tubes
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