In the equivalent circuit of a quartz crystal, LCR arm has an inductance of 4 mH and capacitor has a value of 4nF, then the series resonant frequency of the oscillator is:

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Mr. Dubey • 87.94K Points
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Q. In the equivalent circuit of a quartz crystal, LCR arm has an inductance of 4 mH and capacitor has a value of 4nF, then the series resonant frequency of the oscillator is:

(A) 0.25 mhz

(B) 2.5 mhz

(C) 25 mhz

(D) 5 mhz

Correct Answer - Option(A)
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Filed under category Antennas and Microwave Engineering

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Explanation by: Mr. Dubey

 the series resonant frequency of a crystal oscillator is given by 1/√lc. substituting the given values of l and c in the expression, the series resonant frequency is 0.25 mhz.

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