What is the difference between an amplifier and an oscillator?
Asked by rajpal ajmera
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1 Answer
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As per NCERT, An amplifier increases the amplitude of the input signal and gives out an amplified output. The transistor works as amplifier in the active region of transfer characteristics curve.
An oscillator makes use of capacitor-inductor pair to power the amplifier.
Now the main difference is that an external output has to be supplied to the amplifier for it to work. Whereas, in case of oscillator you need not supply external signal. The oscillator takes a portion of output signal from amplifier and use it as input to amplifier through the capacitor-inductor pair.
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