Question

Draw the circuit diagram of a common emitter n-p-n transistor as an amplifier. Would you prefer to use a transistor as a common base or a common emitter amplifer and why?

Answer 1

Reasons for using a common emitter amplifier over common base amplifier:

(i) Voltage gain is quite high without any phase change of signal voltage.

(ii) Voltage gain is uniform over a wide frequency range or power gain is high .