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A switch-mode power supply is to be designed with the following specifications: input voltage Vs = 48 V ± 10%, output voltage Vo = 5 V, switching frequency fs = 100 kHz, output power Po = 15-50 W. A forward converter operating in a continuous current mode with a demagnetizing winding of N3 = N1 is to be used. Assume all components to be ideal except for the presence of the transformer magnetization inductance.
(a) Calculate N2/N1 if this turns ratio is desired to be as small as possible.
(b) Calculate the minimum value of the filter inductance.
The two sides of a triangle are 17 cm and 28 cm long, and the length of the median drawn to the third side is equal to 19.5 cm. Find the distance from an endpoint of this median to
Advantages of High level Languages a.It is easy to learn write and debug the program written in high level languages. b.Programs are more legible as compared to m
1. Given S(D1) = !Q1 X + !Q1 Q0 + Q1 !Q0 !X and S(D0) = !Q1 !Q0 !X + Q0 X + Q1 !Q0 !X A. DRAW A MINIMI
Turn off Time The time interval between the instant when the SCR current has decreased to zero after external switching of the SCR voltage circuit and the inst
Give some applications of manganin. Manganin is alloy of nickel, copper and manganese. This is used shunts in measuring instruments, for making their coils and for making pr
Survey Methods and Analysis - Power Supply There are two major methods of gathering information from customers: qualitative and quantitative. Quantitative Rese
Q. The block diagram of Figure represents a multi loop control system. (a) Determine the transfer function C(s)/R(s). (b) For G 2 G 3 H 2 = 1, evaluate C(s)/R(s).
Q. In the ideal inverting summing amplifier circuit with two inputs, for R f = 10 k, find R 1 and R 2 so that v o = -10v i1 -5 vi2 .
Develop a PSpice program and use PROBE to obtain Bode plots of the magnitude and phase of the transfer function ¯V out / ¯V in for the high-pass ?lter circuit shown in Figure (a)
Determine a normalized frequency at 820nm for a step index fibre having 25µm core radius. Given n 1 =1.48 and n 2 =1.46.Also calculate how several modes propagate within this fibre
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