Bipolar Junction Transistors (BJT)

Q1: Three different Q points are shown on a dc load line. The upper Q point represents the:

A minimum current gain

B intermediate current gain

C maximum current gain

D cutoff point

ANS:C - maximum current gain

It's minimum current gain!

Because when a transistor is biased in the saturation mode, Ic<(beta x Ib).

This condition is very often used to prove that a transistor is biased in saturation mode.

Reference: Electronics Circuits Analysis and design by Donald A Neaman (Third Edition)



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