-
In differential amplifier, the common emitter current is made constant:
-
- to make Ad very small
- to make Ac very small
- to make the amplifier symmetrical
- to keep CMRR constant
Correct Option: B
In differential amplifier, the common emitter current is made constant by making the CMRR very high and ideally close to infinity and this can be achieved by either increasing Ad or decreasing Ac.
Hence alternative (B) is the correct choice.
