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Which of the following oscillator cannot be used in low frequency oscillations?

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Which of the following oscillator cannot be used in low frequency oscillations?

(a) Wein bridge oscillators

(b) RC phase shift oscillators

(c) Colpitts oscillators

(d) RC oscillators

I got this question at a job interview.

My doubt stems from Classification of Oscillator-2 in portion Oscillators of Analog Circuits

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Correct answer is (c) Colpitts oscillators

The best explanation: Since Colpitts oscillator is an LC oscillator it cannot be used as a low frequency oscillator. Capacitor present provides a low reactance path to HF signals and thus provides excellent performance in the high frequency region, even in microwave.

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