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Analog Electronic Circuits

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Power Amplifier

Question
2 out of 8
 

Comment the maximum efficiency of a Class B amplifier with respect to Class A amplifier.

With zero excitation, there is no current in Class B operation whereas power is drawn from supply source in a Class A amplifier. Therefore, efficiency of Class B amplifier is greater than the efficiency of a Class A amplifier. The maximum efficiency of Class B amplifier is 78.5%.