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In the battery charger circuit shown the sinewave input vs is 12 rms while the battery voltage varies from 12 v to 14 v from the discharged to fully charged states rs = 10 Ω is the charging source resistance d is an ideal diode and rc = 50 Ω is a current controlling resistor established by the designer skecth and label the diode current waveform for vb = 12 what are its peak and average and values ? what do the peak and average diode current become whem vb reaches 14 v ?
Consider a unity feedback control system with plant transfer function G(s) and controller transfer function Gc(s). (a) If the phase margin and crossover frequency are adequate but you need to increase the error constant.
Although this forms PNP and NPN transistors, the bias of the regions isdesigned so the junctions are reverse biased and the electric fieldeffects on the channel are supposed to control the MOS-FETtransistors operations.
Find i(t), vL(t), v(t), the energy stored in the capacitance, the energy stored in the inductance, and the total stored energy for the circuit of Figure, given that vC(t) = 10 cos(1000t)V. (The argument of the cosine function is in radians.) Show ..
at the frequency f=12khz, a filter is designed to attenuate the input signal by 78db, find the amplitude of the output signal if the 12khz input has an amplitude of 1V.
question 1ai give three advantages of a three-phase system over a single-phase system.ii there are two basic
An electrical load has a power factor of 0.8 lagging. It dissipates 8 kW at a voltage of 200 V. - Calculate the impedance of this load in rectangular coordinates.
The generator voltage is 120 V and the lamp voltage should be 110 V or more. Calculate the current drawn by each lamp if its voltage is 110 V and its power is 100 W. Calculate the current in the two-wire line. Calculate the maximum resistance of t..
The gradient of a function F(x,y,z), written as or grad F, is found as where is the unit vector in the x-direction. is the unit vector in the x-direction, and Ls the unit vector in the x-direction. What is when F = 2x + 3y2z
Consider two signals that have the same frequency. When the amplitude of the first signal is at its maximum, the amplitude of the second signal is at half its maximum from the zero level. What is the phase shift between the two signals
If a stepper motor has a step-angle of 7.5? , what digital input rate is required to produce a rotation of 10 rev/sec What will be the step-angle for a hybrid stepper motor with eight stator windings and ten rotor teeth
A U.S Department of Energy report estimates that over 100billion kWH/year can be saved in the United States by variousenergy conservation techniques applied to the pump-driven systems.
The input signal consists of an e.m.f. of 60 mV from a source of internal resistance 2.2 kΩ, and the total load on the stage output is 4 kΩ. Determine the current, voltage and power gains of the amplifier stage.
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