Sound amplification. Servo control systems.
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Class C amplifier.. A class D amplifier is more efficient than class B, and is more efficient than class C as well.
A full and true "quasi complementary symmetry power amplifier" is an audio amplifier whose power output section is typically comprised of 2 of the same NPN output transistors, (generally matched) and 2 of the same PNP or NPN driver transistors, (also generally matched). Driven by dual matching + & - DC voltage power supply voltages. With the exception of the bias control circuit components, each half of the output circuit are exact mirror images of one another. Each half of the circuit amplifies the positive and negative half cycle of the audio signal. The theory is, "it is much more likely to perfectly match the performance of each half cycle of the amplifier by using this circuit design criteria. Only the most esoteric amplifier manufactures used this design in the late 60's and 70's.
Class B operated amplifier is used extensively for audio amplifiers that require high power outputs. Its also used as the driver and power amplifier stages of transmitters.
"What is class AB push pull amplifier and give its circuit and description .?"
A: class a