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A certain boost converter is implemented with a MOSFET and a p-n diode. The MOSFET can be modeled as ideal, but the diode exhibits a substantial reverse-recovery process, with reverse recovery time tr and recovered charge Qr . In addition, the inductor has winding resistance RL.
(a) Derive an equivalent circuit that models the dc components of the converter waveforms and that accounts for the loss elements described above.
(b) Solve your model to find an expression for the output voltage
(c) Plot the output voltage vs. duty cycle over the range 0≤ D < 1, for the following values: RL =0.25Ω, fs = 150 kHz, Qr = 5 μcoul, tr = 100 nsec, R = 60Ω, Vg = 24 V.
A device moves 120 coulombs of charge from point a to b in 8 seconds. the distance between a and b is 6 cm. the energy expended in moving the charge is 600 Ws. calculate the voltage between a and b.
What is the capacitance ratio for the capacitors with Ta2O5 and oxide/nitride/oxide dielectrics for the same thickness, provided the oxide/nitride/oxide has thickness ratio 1:1:1 for the oxide to the nitride
computation with 5% of the code that cannot be paralleled, compute the speedup and efficiency.
1- Write a function that shows you how to calculate F(x) = 0.1X^2+5Y^3 2- Read and write a File that has a set of 10 numbers. Then assign those numbers to an array.
A bar of p-type silicon, has a cross-sectional area A = 10-6 cm2 and a length L = 1.2 x 10-3 cm. For an applied voltage of 5V, a current of 2mA is required. What is the required (a) resistance, (b) resistivity, and (c) impurity doping concentratio..
Consider a network with a driving-impedance Z. (1) Find expression for P and Q. (2) Find p(t) in terms of P and Q. (3) Suppose that the network is a series RLC. Interpret the result in part (2).
1- A one-meter long wire antenna is center fed by a source with frequency 30 MHz : i- find the wavelength and the current distribution along the antenna . ii- find the radiation resistance. iii- if the source is now replaced by another with frequency..
Consider the function F = x · y + x(not) · z. a) Expand the function to its canonical or standard sum of products (SOP) form. b) Express the function in its canonical or standard product of sums (POS) form.
Determine the approximate output rating (kVA) required for a portable alternator to be used as temporary supply on a single dwelling construction site. The loads to be supplied include: 1 x 1 kW single-phase capacitor start/capacitor run motor (bri..
The power supplied by a certain source is a constant 7.5 W over the first 5.8 min, zero for the next 2.8 min, a value that increases linearly from zero to 10 W during the next 8.8 min, and a value that decreases linearly from 10 W to zero
What are the design implications for the location and positioning of solar cells? Explain why the use of solar cells might be more appropriate in some regions of the country.
A line charge of density (rho)l [C/m] is in the form of a semicircle of radius a lying on the x-y plane with its center located at the origin. The semicircle starts at (phi)= pie / 2 and ends at phi = 3(pie) / 2 in cylindrical coordinates.
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