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1st January 2008, 21:03 #1
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rc resonance
hai
i like to know working of rc resonence ocillator circuits

1st January 2008, 21:03

2nd January 2008, 01:42 #2
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resonance circuit
Same as Hartley and Colpitts oscillators... Basically idea is to create sufficient phase shift.
(The Barkhausen condition: if there is positive feedback with a phase 0 or 360 degrees, you will get oscillation).

2nd January 2008, 09:14 #3
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rc circuit resonance
if there is positive feedback and the feedback given is equal to input then oscillation can be achieved... at a particular frequency the RC or any other resonant circuit used would satisfy this condition and at this frequency the circuit oscillates....

2nd January 2008, 09:14

2nd January 2008, 23:38 #4
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resonant rc circuit
it works on Barkhausen Criteria

2nd January 2008, 23:38

4th January 2008, 13:37 #5
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rc resonant
thanks for responds
i hear a fully charged capacitor if short to a inductor it will start damping resonance with out any other component
i like to get expla for this

4th January 2008, 14:47 #6
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resonance rc
hi,
there is one more condition for oscillation which the gain of the amplifier section (without considering feedback)has to be much much greater than 1 initially & finally gain should settle at a value greater than 1 to compensate the loss in the tank circuit.
With Regards
S.rajesh kumar

4th January 2008, 16:02 #7
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r c resonance
the charged cap due to the charge passes current through the inductor and the inductor stores the energy as magnetic energy until the capacitor is able to supply current after that the inductor charges the cap and converts its stored energy to electrical energy... this repeats but due to some parasitic resistance some energy is dissipated leading to damped oscillations...

4th January 2008, 16:02

5th January 2008, 04:53 #8
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rc resonance circuit
Originally Posted by A.Anand Srinivasan

5th January 2008, 11:09 #9
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how does a circuit resonant without inductor
Originally Posted by grittinjames
i've replied to this post of grittinjames... better read the post well before stating out mistakes....
1 members found this post helpful.

5th January 2008, 15:59 #10
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rc resonant circuit
hi
the answer is simple
this type of oscillator works on the phase shifht
one of the 2 conditions of the oscillation is to make the phase shift betwwn the output of the feedback circuit and the input of the amplifier zero
this is why we put many cells of rc circuits
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