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(a) An average hole velocity of 10^3 cm/sec results when 2 v is appliedaccross a 1 cm-long semiconductor bar. What is the mobilityof the bar?(b) name the two dominant carrier scattering mechanisms innondegenerately doped semiconductors of device quality(c) For a given semi" " the carrier mobilties inintrinsic material are (choose one: higher than, lower or same)those in heavily doped material. Explain why mobilities inintrinsic material are (chosen answer) those in heavily dopedmaterial.(d) Tow GaAs wafers, one n-type and one p-type, areuniformily doped such that ND(wafer 1) = NA(wafer 2) >> ni. Which wafer will exhibit the larger resistivity? explain.
The current entering the positive terminal of a device is i(t)= 6e^-2t mA and the voltage across the device is v(t)= 10di/dtV. ( a) Find the charge delivered to the device between t=0 and t=2 s.
write an 8051 program that would generate a 200khz, 50% duty cycle, square wave at P1.0.Use Timer 0 for the delay. Ignore the overheads cycles due to the instructions in the loop. Assume 12 MHz clock. All data must be hex.
A 10 uH inductor is connected to a circuit such that prior to t = 0 the current through the inductor is 10 mA. After t = 0 the current through the inductor is iL(t) = 10e^(-1000t) mA where t is time in seconds. a) Determine the expression for indu..
What is the purpose of core in hollow solder wire What is tinning, and why is it important Why is safety so important when soldering Why has lead-free solder replaced lead-based solder
A plane circular disk of radius 0.25m rotates at a speed of 200 rad/s about an axis through the center of the disk perpendicular to the plane of the disk. There is a uniform magnetic flux B = 1 Tesla parallel to the axis of rotation.
a small loop of wire of radius 1.8cm is placed at the center of a wireloop with radois 25cm. the planes of loops are perpendicular to eachother and a 7A current flows in each. Estimate the torque the large loop exerts on the smaller one.
Design a logic circuit to detect a winning tic-tac-toe pattern of three in a row. The output W=1 if a winning pattern is present. (Assume the X and O circuits are separate but identical) a. Design the X circuit for the following pattern of signals ..
An additional motor load of 100 kW is needed. Find the new kilovoltampere load and power factor of the plant load if the motor to be added is (a) an induction motor with a power factor of 90 percent lagging, and (b) an 80 percent leading power fac..
draw out a schematic that implements a 3-bit XOR gate, but consisting of only 2-bit NAND gates. Your schematic should have from 8-10 NAND gates, but NO other logic function such as OR, AND, INV gates can be in your final design.
Suppose q1 = 10. nC is located at the Cartesian coordinate point (4.0 m, 0.0 m, 0.0 m). A second charge q2 (-4.0 m, 0.0 m, 0.0 m) = -10. nC. If a test charge qt(0.0 m, 0.0 m, 3.0 m) = 0.10 nC
Design an amplifier circuit which uses an OpAmp and is powered by dual 15 V power supplies, and which has the following characteristic at low frequencies: Vout = 3V1 - 5V2 1. State the information which is extracted from the equation.
Consider an analog periodic sinusoid x(t) = cos (3*pi*t + pi/4) being sampled using a sampling period Ts to obtain the discrete time signal x[n] = x(t)I t=nTs = cos (3*pi*t + pi/4). a.) Determine the discrete frequency of x[n].
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