The positive feedback is required by an amplifier to act an oscillator. The feedback here means:

Option 1 -

External input is necessary to sustain ac signal in output.

Option 2 -

A portion of the output power is returned back to the input.

Option 3 -

Feedback can be achieved by LR network.

Option 4 -

The base-collector junction must be forward biased.

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Asked by Shiksha User

1 Answer

Answered by

Vishal Baghel | Contributor-Level 10

3 months ago

Correct Option - 2

Detailed Solution:

A portion of the output power is returned back to the input.

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