1.

Compare four types of power amplifiers.

Answer»
ClassABCAB
Conduction
angle		360°180°Less than 90°180° to 360°
Position of Q pointCentre of load line.on x-axis (cut off)Below x-axisBetween x-axis and centre of load line
Overall
efficiency		25%70-80%Higher than 80%50-70%
Signal
distortion		NoneAt x-axis cross over pointLarge
Amounts		Small amounts.


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