Power Amplifier

What is a Power Amplifier ?
An electronic circuit exists that enhances the strength of an incoming signal, referred to as a power amplifier. In contrast to small-signal amplifiers, which concentrate on boosting voltage or current while preserving smoothness, power amplifiers are engineered to deliver robust output with minimal aberration. They find extensive utility in situations demanding a substantial augmentation of signal potency, such as managing audio system speakers or transmitting wireless signals over extended distances.
Power amplifiers can be categorized into several classes based on their mode of operation and efficiency. Classes of power amplifiers are as follows:

Class A Power Amplifier
Transformer Coupled Class A Power Amplifier
Push-Pull Class A Power Amplifier
Class B Power Amplifier
Class AB Power Amplifier
Class C Power Amplifier