my qs is somewhat misleading actually i wanna ask if i change the capacitor(or u may say capacitance value) of tank capacitor what how the output voltages ant feed back voltages effected from it. also mention abt the effect on frequency
2007-03-12 11:55:09 · 3 answers · asked by fiza 2 in Science & Mathematics ➔ Engineering
Well..... Since the required 180 degree phase shift through the tank circuit is caused by a tap in the inductor (rather than by a pair of series capacitors as in the Collpitts oscillator) the effect on feedback percentage and output foltage will probably be negligible (unless it's a several orders of magnitude change ☺)
Since the resonant frequench is 1/(2πf√LC) as the capacitance is increased, the frequency will decrease and vice-versa.
HTH ☺
Doug
2007-03-12 13:08:39 · answer #1 · answered by doug_donaghue 7 · 0⤊ 0⤋
The value of capacitance will affect only the frequency of oscillation.
The ratio of output to feedback voltages is determined by the position of the tap on the inductance.
2007-03-12 19:04:06 · answer #2 · answered by dmb06851 7 · 0⤊ 0⤋
Resonance occurs at the frequency at which the inductive and capacitive reactances are equal. Capacitive reactance is
1 / 2 pi F C
2007-03-12 19:01:00 · answer #3 · answered by Anonymous · 0⤊ 0⤋