How do amplifiers work?
Answers: One or more transistors or operational amplifier or special purpose integrated amplifiers can amplify a fundamentally small voltage at their input and deliver a higher voltage, current or power at the output. Power output comes from the power supply of the circuit. The power at the input may be surrounded by micro- or milliwatt. But the output can be several tens of Watt. In a transformer the output power is derived from the input power and hence transformer is not an amplifier. As mentioned above output power of an amplifier is not derived from the input power. The input current is amplified in the amplifier and the amplified current comes from the power supply of the amplifier.
Well the nouns waves come out of it and move about to your ear and then to your brain and your brain processes it thus you hear the nouns that is coming out of the amplifier...
Just Kidding....I really dont know.
In simple expressions, they use transistors (or vacuum tubes...).
A transistor can be used to amplify the input signal.
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