JEE Mains · Physics · STD 12 - 14. Semicondutor electronics
The positive feedback is required by an amplifier to act an oscillator. The feedback here means ...........
- A External input is necessary to sustain ac signal in output.
- B A portion of the output power is returned back to the input.
- C Feedback can be achieved by \(LR\) network.
- D The base-collector junction must be forward biased.
Answer & Solution
Correct Answer
(B) A portion of the output power is returned back to the input.
Step-by-step Solution
Detailed explanation
When the amplifier connects with positive feedback, it acts as the oscillator the feedback here is positive feedback which means some amount of voltage is given to the input.
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