To ensure constant feedback which method is used in Colpitts oscillator ________(a) Gang tuning(b) Using same capacitor(c) No method is used(d) Voltage divider always gives constant feedbackThis question was addressed to me during an interview for a job.My enquiry is from Colpitts Oscillator-2 in portion Oscillators of Analog Circuits

To ensure constant feedback which method is used in Colpitts oscillato

1.	To ensure constant feedback which method is used in Colpitts oscillator ________(a) Gang tuning(b) Using same capacitor(c) No method is used(d) Voltage divider always gives constant feedbackThis question was addressed to me during an interview for a job.My enquiry is from Colpitts Oscillator-2 in portion Oscillators of Analog Circuits
Answer» Correct choice is (a) Gang tuning Easy explanation: FREQUENCY of oscillation is determined by the tank circuit and is varied by the gang tuning of two capacitors/center TAPPED capacitors. As they are TUNED, thus as tuning is varied then VALUES of both capacitors varies, and the ratio of both capacitors remains same.

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