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What is an oscillator?

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in Physics – Class 12 by (135k points)
What is an oscillator?

(a) An amplifier with a large gain

(b) An amplifier with negative feedback

(c) An amplifier with positive feedback

(d) An amplifier with no feedback

This question was posed to me during an interview.

My question is taken from Semiconductor Diode topic in division Semiconductor Electronics : Materials, Devices and Simple Circuits of Physics – Class 12

1 Answer

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Best answer
The correct choice is (c) An amplifier with positive feedback

Easy explanation: An oscillator is considered as an amplifier with positive feedback. It converts direct current from a power supply to an alternating current signal. It produces an alternating waveform without any input.

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