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At series resonance, the impedance of a crystal is________(a) minimum(b) maximum(c) equal(d) ZeroI got this question in an internship interview.I'm obligated to ask this question of Oscillators in portion Power Amplifiers of Electronic Devices & Circuits

Answer»

Right choice is (a) minimum

Explanation: The slope of the crystals impedance suggests that as the frequency increases ACROSS its TERMINALS. At a particular frequency, the interaction between the SERIES capacitor and the inductor creates a series RESONANCE CIRCUIT reducing the crystals impedance to a minimum and equal to Resistance.



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