Why do we intend to obtain different gains at different places? In an emitter follower for example,
There's no voltage gain, but there's current gain and therefore it has power gain. Okay, how's that different and useful from having an voltage gain? And what's the difference between current and power gain. In power amplifiers,
Since any more voltage amplification would lead to distortion, we amplify the power(current).
What effect does amplifying power bring with it?