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Hartley oscillator has inductance values of 12 mH and 4 mH in the feedback section and a capacitor of 4 nF. Then the resonant frequency of the circuit is:

Hartley oscillator has inductance values of 12 mH and 4 mH in the feedback section and a capacitor of 4 nF. Then the resonant frequency of the circuit is: Correct Answer 19.89 kHz

Resonant frequency of Hartley oscillator is given by 1/ 2π√(C1 (L1 + L2)). Substituting the given values in the above equation, cut-off frequency is 19.89 kHz.

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