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DC-DC converter. You have 10 capacitors, each 1F. If you charge them in parallel from a 5V power supply, and then disconnect them and reconnect them in series:
a. What is the equivalent capacitance seen by the power supply while charging?
b. What is the equivalent capacitance of the series combination?
c. What is the voltage across the equivalent series capacitor?
d. How much charge can the series combination deliver to a load (such as a resistor) before the voltage drops by 10%?
e. Assume that you have a bunch of switches that let you change between the parallel and series configurations quickly, and that the switching time and charging time are negligible. If you charge and discharge 10 times per second, what is the average current that you would deliver to a load with the constraint from part d?
Design a 3 th order high - pass Butterworth filter with a High Frequency gain of 20 DB and a cutoff frequency of 20 rad/s. 2) Using MATLAB, plot the frequency respon se of this filter, and the location of the filter poles.
Using the Routh Hurwitz method, find the values of k for which the following polynomial has all its roots to the left of s = -1.
Generate a sine wave signal with amplitude A=1, and frequency=0.1592Hz. Using a uniform PCM method, quantize it ot a) 8-level and b) 16-level. Plot the original signal and the quantized signals on the same axes
BJT Amplifiers Sketch an emitter-follower circuit with R1 = R2 = 50kohm ; RE = 2kohm. The collector of the npn transistor is connected to VCC = 5V and the input signal has an internal resistance, RS = 0.5kohm
In a balanced three-phase system the Y-connected impedances are 3∠60°Ω. If V_bc=480∠-75° V, find current of phase "b" in polar form.
A. Determine the fundamental frequency w0, the period t0, and the coefficients in the representation X(t) = x0 + Re{(sigma)k=1N Xkejkwot} for the above input. C. Now consider a new signal y(t) = x(t) + 10 cos (50 pi t - pi/6). How is the spectrum ..
discuss the differences between FET and BJT transistors. What are the advantages and disadvantages of each kind of transistor What are types of transistors do you know about
3) What is the RMS voltage of the source in a single loop series circuit if Irms = 1A-30° and Ztotal = 100 65° 4) What is the power dissipated by an electric heater with a resistance of 20? drawing a current waveform of i(t) = 10 sin(60t) Amps
Let us assume that a synchronouse 3 phase alternator produces a no-load line voltage of 13.2 KV. if a load having a lagging power factor of 0.8 is connected to the machine, must the excitation be increased or decreased
Earth-based 802.11a or 802.11g wireless LAN standards transmit data using a bandwidth of 16.56 MHz. What is the theoretical thermal noise level (in V) in an ideal receiver operating with an input impedance of 50 ohms
A waveform generator has been setup with a square wave output at 4.0kHz with a 81% duty cycle. If the peak-to-peak output amplitude has been set to 6.0V, with an offset of -1.0V, what is the maximum voltage of the output waveform
In class we saw an example of 'Beat note'. In this problem we consider a more general case. Let fc > 0, fd > 0 and define a signal x as.
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