The low impedance of a speaker can be matched to the output impedance of
A) a common collector to deliver maximum power.
B) a common base to deliver maximum power.
C) a common emitter to deliver maximum power.
D) a coupling capacitor.

Question

Quizplus · Accepted Answer

A common collector configuration (also known as an emitter follower) is used to match the low impedance of a speaker to the output impedance of an amplifier to deliver maximum power. This configuration provides a low output impedance which is suitable for driving devices like speakers that typically have low input impedance.

The Low Impedance of a Speaker Can Be Matched to the Output