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Questions  

If De, Db and Dc are the doping levels of an emitter, base and collector respectively of a transistor, then :

a
De=Db=Dc
b
De
c
De>Db>Dc
d
De>Dc>Db

detailed solution

Correct option is D

Emitter is the most highly doped

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When the base -emitter voltage of a transistor connected in the common -emitter mode is changed by 20 mV the collector current is changed by 25 mA. Find the transconductance.


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