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 One Stop GATE Forum : GATE Technical Discussions : GATE ECE |
 Topic: Oscillator |
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manju
Senior Member 
Joined: 20Feb2007 Online Status: Offline Posts: 221 |
   Topic: OscillatorPosted: 22Feb2007 at 2:56pm |
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In an oscillator gain stability is usually achieved by
(a) using -ve feedback (b) controlling the gain (c) incorpotating a tined ckt (d) none of these .I think ans is a) .But in a solution answer given is b).Please,Let me know correct answer. Post Resume: Click here to Upload your Resume & Apply for Jobs |
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mastro
Newbie 
Joined: 05Jun2007 Online Status: Offline Posts: 12 |
Posted: 05Jun2007 at 6:12am |
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yes.. it is right.
The main critireon behind using a feed back in oscillators is to control gain. Because for the oscillations to occur, we should make sure that the gain and B.W product is unity or less and the total phase shift in the loop should be 180 Degrees. |
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