Question

Can anyone explain about amplifier?​

Answer 1

Answer:

An amplifier is an electronic device that increases the voltage, current, or power of a signal. Amplifiers are used in wireless communications and broadcasting, and in audio equipment of all kinds. They can be categorized as either weak-signal amplifiers or power amplifiers.

Answer 2

Answer:

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Explanation:

Amplifier is the generic term used to describe a circuit which produces and increased version of its input signal. ... There are many forms of electronic circuits classed as amplifiers, from Operational Amplifiers and Small Signal Amplifiers up to Large Signal and Power Amplifiers.