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The Epic Interactive Encyclopedia 1997
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The_Epic_Interactive_Encyclopedia_97.iso
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1992-09-03
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489b
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14 lines
An amplifier is an electronic device that
magnifies the strength of a signal, such as a
radio signal. The ratio of output signal
strength to input signal strength is called
the gain of the amplifier. As well as
achieving high gain, an amplifier should be
free from distortion and able to operate
over a range of frequencies. Practical
amplifiers are usually complex circuits,
although simple amplifiers can be built
cheaply from single transistors or valves.
Subject by: Vince Pike