Bipolar junction transistor, Electrical Engineering

Bipolar Junction Transistor:

Transistor construction: the emitter layer is heavily doped, the base is light doped and the collector is only lightly doped. Outer layer has width much greater than those of sand witched p and o type material is150:1.

The term bipolar reflect that the fact that the holes and electrons participate in the junction's process into oppositely polarized material.

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