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Suppose the VCO of Fig. 8.25(a) employs varactors whose capacitance is given by = C0(1 + α1V + α2V2), where V denotes the gate-source voltage. Assume complete current steering and a low-frequency noise current of In = cos ωmt in .
(a) Determine the AM noise resulting from In.
(b) Determine how the average value of the varactor capacitance varies with In.
(c) Compute the phase modulation as a result of the tank resonance frequency modulation.
Discuss what is meant by poles and zeros of a transfer function. How does the determination of each help in understanding the response of a circuit?
If the armature current of the generator in Problem 8-22 is 50 A, the speed of the generator is 1700 r/min, and the voltage is 106 V, how much field current must be flowing in the generator?
Formulate the governing equations and boundary conditions and obtain a solution for the temperature distribution in terms of constants of integration.
Physically describe the behavior of the charge carriers and ionized dopant atoms in the vicinity of a semiconductor pn junction that causes the potential (energy) barrier that tends to prevent charge carriers from crossing the junction
Design a differential amplifier using BJT's to provide a differential gain of 65. The bias current source should be 2.5 mA. Follow the fully differential amplifier with a differential input single ended output amplifier with an additional gain of ..
Design a system that repeatedly computes and outputs the sum of all positive numbers within a 512 word register file A consisting of 32-bit signed numbers.
Generate 1000 random variables that are normally distributed with mean 0 and standard deviation 50. Pick a number at random out of these random variables. Hint: Leverage the capabilities of the for loop to simplify the code.
Calculate the total real and reactive power.
The resistance of a conductor of diameter d and length l is R Ω. - If the diameter of the conductor is halved and its length is doubled, the resistance will be:
A 440v 4-pole dc generator takes an armature current of 50A when rotating at 626 rpm. the armature circuit resistance is 0.25 ohms. determine the generated emf?
A series circuit has a DC voltage source (56 volts), a resistor, (72 ohms), a capacitor (82 farads), and a switch. The capacitor is initially uncharged and the switch closes at t=0.
what are two fundamental advances in the circuit theory that were developed in the 19th century in response to the challenges of telegraphy?
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