ABSTRACT
Classes and Devices The almost universal choice in semiconductor power amplifi ers is for a unity-gain output stage, and specifi cally a voltage-follower. Output stages with gain are not unknown – see Mann [1] for a design with 10 times gain in the output section – but they have signifi cantly failed to win popularity. Most people feel that controlling distortion while handling large currents is quite hard enough without trying to generate gain at the same time. Nonetheless, I have now added a section on output stages with gain to this chapter.
