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Describe the basic operation of a transistor

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Electrical Engineering

Describe the basic operation of a transistor

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3.8 Ratings (462 Votes)
The transistor can be considered astwo pn junctions that are placed back to back The structure hastwo PN junctions with a narrow base region between the two outlyingareas for the collector and emitterIn normal operation the base emitter junction is forward biasedand the base collector junction is reverse biased When a currentflows through the base emitter junction a current also flows inthe collector circuit This is larger and proportional to the onein the base circuit In order to explain the way in which thishappens the example of an npn transistor is taken The sameprinciples are used for the pnp transistor except that    See Answer
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