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Which component of Colpitts oscillator is used in feedback system?

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Which component of Colpitts oscillator is used in feedback system?

(a) Inductor

(b) Resistor

(c) Capacitor

(d) Transistor

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My enquiry is from Colpitts Oscillator-1 topic in portion Oscillators of Analog Circuits

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Correct answer is (a) Inductor

The explanation: A capacitor with a center tap or simply two capacitors in parallel to an inductor, acting as a voltage divider, acts as the feedback system, providing feedback to the base of the amplifying transistor. Oscillations across the capacitor are applied at the base-emitter junction and appear across the collector as an amplified output.

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