An oscillator differs from an amplifier because it_____________?
Correct answer: B. Requires no input signal
- A. Has more gain
- B. Requires no input signal
- C. Requires no d.c. supply
- D. Always has the same input
Explanation
An amplifier needs an external input signal, whereas an oscillator generates its own periodic output from noise and circuit feedback. Both normally require a DC supply, so option c is not correct.
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