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The power amplifier in a home theater amplifier has an output power of 200 watts. Assuming a Class B amplifier with the maximum theoretical efficiency is used, find the DC power delivered to the amplifier. Find the heat energy generated by this amplifier. Assuming the BJT power transistor has a maximum junction temperature of 155 0C, if the ambient temperature is 25 0C, find the maximum allowable thermal resistance from the junction to ambient.
A given device has been determined that it attenuates 4.8dB in power from its input terminal to its output terminal. What is the output power in watts if a 150-W input has been launched into a system that has two of this type of devices
A control system for positioning the head of a floppy disk drive has the closed-loop transfer function T(s)=11.1(s+18) / (s+20)(s^2+4s+10). Plot the poles and zeros of this system and discuss the dominance of the complex poles.
The following equation represents the complete combustion of ethane: 2C2H6(g) + 7O2(g) 4CO2(g) + 6H2O(g)At the same temperature and pressure what is the maximum volume in liters of carbon dioxide
A BJT is operating at a collector current of 1mA ,when Vce=1v and it has early voltage of 75v.If Vce is increased to 11v,find collector current
Calculate the lowest 3 energy levels in a quantum well made from InAs, using the infinite potential approximation. Length of the well L = 10 nm.
stochastic message signal, m(t), is transmitted down a (noiseless) cable channel by PCM, using an 8-bit code. If the ambient signal is equally likely to lie anywhere between its two extremes, (+/- mp), calculate the ration of the mean squared sign..
Design a circuit that satisfies the equation VOUT = 5 * ( VB - VA ). Draw the circuit schematic identifying supply voltages and show your work on component selection.
A FIR filter is depicted in the figure below. Assume that the system is at rest and an input sequence is applied to the system. Determine the first seven samples of the system output Assume that the system is initially at rest. x(n)=u(n)+u(n-1)-2u..
A simple low-pass discrete-time filter is characterized by the following linear difference equation: y[n] = f y[n-1] +(1- f) x[n] , with 0 1 Draw and clearly label an adder-gain-delay diagram for the filter. using the same difference equation from a..
For a complex load of 100 + 25 j ohm. find the matching circuit consist of ideal capacitor and/or inductor to match the load to 50 ohm impedance at 500MHz. The solution should include circuit schematic and values of each component
Sitting in front of you is a box; you cannot see iside the box. The box has a power cord that is plugged into a working wall socket. There is a wire coming out of the box; the end of the wire outside the box is exposed (not insulated) and is not c..
A generator (which may be represented by an emf in series with an inductive reactance) is rated 500MVA, 22kV. Its Y-connected windings have a reactance of 1.1 p.u. Find the ohmic value of the reactance of the windings.
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