A Tuned Amplifier Contains a 2

question 12

Multiple Choice

A tuned amplifier contains a 2.2 mH inductor in its tank circuit, along with a varactor with the following ratings: Ct = 80 pF when Vr = 3 Vdc and CR = 3 for V = 3 Vdc to 6 Vdc. What is the resonant frequency of the circuit when VR = 3 Vdc?

• A) 904.3 GHz
• B) 758.7 kHz
• C) 379.4 kHz
• D) 189.9 MHz

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