aaaa (Question: 137812.0 )

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This topic is not avialable

yashasvi bhardwaj

· started a discussion

· 1 Months ago

aaaa (Question: 137812.0 )

positive feedback

ALOK TIWARI

· started a discussion

· 1 Months ago

aaaa (Question: 137812.0 )

positive is right

Question:

An oscillator uses:

Options:

Positive feedback

Negative Feedback

Both positive and negative feedback

No feedback

Solution:

Ans: (A) In oscillators using positive feedback it is important that amplitude of the oscillator output remains stable. Therefore the closed loop gain must be 1 (unity). In other words, the gain within the loop (provided by the amplifier) should exactly match the losses (caused by the feedback circuit) within the loop.

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