Electronic Amplifier

An electronic amplifier is used for increasing the power of a signal.

It does this by taking energy from a power supply and controlling the output to match the input signal shape but with a larger amplitude. In this sense, an amplifier may be considered as modulating the output of the power supply.

The term amplifier is applied to anything from a circuit (or stage) using a single active device to a complete system such as a packaged audio hi-fi amplifier.

Read more about Electronic Amplifier:  Types of Amplifier, Classification of Amplifier Stages and Systems, Implementation

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