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What is used in Hartley oscillator?(a) a piezoelectric crystal(b) two resistor divider(c) a two-capacitor divider(d) a tapped inductorThis question was addressed to me in semester exam.I need to ask this question from PWM in chapter Phase Locked Loop & Pulse Modulation of Analog Communications

Answer»

Correct answer is (d) a tapped inductor

To explain I would say: In HARTLEY oscillator, the oscillation frequency is determined by a tuned circuit consisting of capacitors and INDUCTORS. Thus, it is an LC oscillator whose frequency can be varied. Hartley oscillator was INVENTED in 1915.



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