Q. A class A power amplifier uses __

A
Two transistors
B
One transistor
C
Three transistors
D
Four transistors
Solution:

In Class A amplifier, if the collector current flows all times during the full cycle of the input signal, the power amplifier is known as class A power amplifier. It is less used for higher power output stages, as it has poor efficiency. So it consists of only one transistor

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