transistors

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Two major functions of a transistor

to act as an electronic switch or amplifier

The Two PN junctions of a Transistor

Base Emitter, base collector

Current flow through a transistor

Current flows through the emitter, into the base, and out of the collector.

Emitter of an NPN transistor

Heavily Doped, N material

Emitter of a PNP transistor

Heavily Doped, P Material

Base of a PNP transistor

Lightly Doped N Material

Base of an NPN transistor

Lightly Doped, P material

Collector of a PNP transistor

Moderately Doped, P Material

Collector of an NPN transistor

Moderately doped, N material


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