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Compare Class A with Class AB Power Amplifier.

written 7.7 years ago by abgharge • 250

modified 2.8 years ago by pedsangini276 • 4.8k

Mumbai University > Electronics Engineering > Sem 4 > Discrete Electronic Circuits

Marks: 5M

Year: May 2016

discrete electronics

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written 7.7 years ago by abgharge • 250

Sr.No.	Parameters	Class A Power Amplifier	Class AB Power Amplifier
1.	Location of Q-Point	Middle of DC load line.	Just above cut off.
2.	AC output current	Full period of input signal.	Period of more than 180 and less than 360.
3.	Efficiency	Less (~50%)	More (~78.5%)
4.	Distortion in output waveform	Less Distortion.	More distortion than Class A.
5.	Cross over distortion	Does not occur	Does not occur

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