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explain how a FM signal is produced using a varactor diode in a frequency modulator circuit

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-Series RLC ciranit Amplitnde of he Voltage Source is 120V - lesistor has a valve of 802 a value of 8os2 Reactance of ne capacitor is 480e The vellage amplitade acras the capucitar is 360V (a) What is he amplitude amplinade of The curent within the cirenit? (b) What is he impedance of he circuit? (c) What are hwo possible readance valves fur he induchr and whoh ore has a smaller anqular freg vency Than resonance frequency.
Answer the following questions about ideal op-amps 1) a) How much current flows into the inverting input? b) What is the voltage difference between the inverting and non-inverting input when negative feedback is used?
Part A - Calculating the output voltage of a noninverting op-amp circuit For the circuit shown(Figure 1), determine Vo when R = 8.2 kn, R2 = 3.0 kfn R3 = 110 kn, V, - 90 mV, and Ver = 5.0 V Express your answer in millivolts to three significant figures. >Vir Vo - mV Figure 1 of 2 > Part B- Design of a noninverting op-amp circuit For the circuit shown(Figure 2), determine Ri such that Vo- m x V. Assume m= 12, Ra - 7 kn, and Ra - 100 k and that the op-amp is in its linear region of operation. Express your answer in kiloohms to three significant figures. R =
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