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close this bookAmplifier Teaching Aid (DED Philippinen, 86 p.)
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close this folderBipolar Transistor II
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View the documentClass A power amplifier
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Class AB power amplifier

Solution to the crossover distortion:

Provide some forward bias for the base emitter junction.


Fig. 10-6: Class AB amplifier


Fig. 10-7: Complementary push pull amplifier

Two complementary transistors are used (NPN + PNP) , so no transformer is needed any more.

Efficiency: between A and B

Distortion: Moderate

Application: High power stages in audio and radio-frequency applications.