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close this bookAmplifier Teaching Aid (GTZ, DED; 86 pages)
View the documentPreface
View the documentIntroduction
Open this folder and view contentsLesson 1 - Semiconductor Review
Open this folder and view contentsLesson 2 - Bipolar Transistor
Open this folder and view contentsBipolar Transistor II
View the documentFirst Evaluation
Open this folder and view contentsLesson 4 - Transistor Fundamentals
Open this folder and view contentsLesson 5 - Transistor Biasing
Open this folder and view contentsLesson 6 - Transistor Biasing II
View the documentSecond Evaluation
Open this folder and view contentsLesson 7 - Small Signal Amplifier
Open this folder and view contentsLesson 8 - Small Signal Amplifier II
Open this folder and view contentsLesson 9 - Small Signal Amplifier III
close this folderLesson 10 - Large Signal Amplifier
close this folderLesson Plan
View the documentLarge signal amplifier
View the documentClasses
View the documentClass A power amplifier
View the documentClass B power amplifier
View the documentClass AB power amplifier
View the documentWorksheet No. 10
View the documentThird Evaluation
 

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.

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