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(For these problems use typical room temperature bulk Si hole and electron mobilities: hole -> 460 cm^2/V-sec and electron -> 1360 cm^2/V-sec)
1. A Si wafer is doped with Na = 5x10^16 /cm^3 of acceptors. In equilibrium at T=330K calculate, list the following for the Si wafer: Eg (Energy gap), ni (intrinsic concentration), n,p - the free electron and hole concentrations, Ef - Ei (in eV), the net charge density in the sample, the resistivity of the sample
2. The resistivity of comparably doped N type material is smaller than comparably doped p-type material. Explain?
3. Calculate the resistivity of intrinsic Si and room temp T=300K
4. The total resistance of a Si sample shaped as a rectangular bar is given by R = p* L / A where L and A are the length and cross-sectional area of the sample and the resistivity. If you need to make a 600 ohm resistor from n N type Si sample that is 2 cm long and has a cross sectional area of 10-2 cm^2 determine the doping required.
An 8x1 multiplexer has inputs A, B, and C connected to the selection inputs S2, S1, and S0, respectively. The data inputs I0 through I7, are as follows: I1 = I2 = I7 = 0; I3 = I5 = 1; I0 = I4 = D; and I6 = D'. Determine the Boolean function that t..
A cam is to be desinged for an automated part loader.Using the motion equations,construct a chart that tabulates follower displacement versus time and cam rotation. Also plot this data when the prescribed motion for this application.
Suppose a data array has 30 numbers sorted from low to high already, where no two numbers are equal. We need to search whether any of the two randomly given key numbers, key1 and key2 is in the array. If yes, then find out the position index(es) f..
A three-phase Wye connected generator has Egline = 12470 V, Rp = 1 ?, Xs = 11 ?, and a full load line current of 600 A. Calculate Vterminal at a load power factor of 0.85.
design a Mealy type circuit whose response to a binary sequence is to output a 1 iff the current and previous bit are both the same value. a) Draw a state diagram, showing state, input, output b)Complete the following table of (input, state, output)..
Design a 2nd,4th , and 6th order Butterworth band stop filters with a center frequency at 450 rad/sec and a bandwidth of 100 rad/sec. the final answer should be a ratio of polynomials in descending power of s.
A quartz crystal microbalance (QCM) was employed in a vacuum deposition process, where a thin film of aluminum was grown over a p-Si wafer. The oscillator frequency at the start of the process was 10.0050 MHz.
A coaxial cable has a loss of 5.6 dB at a frequency f. A signal at f has ans rms amplitude of 1.7 mV at the cable input. What is the rms amplitude after it has traveled the length of the cable
A Rankine cycle power plant steam enters the turbine at 100psia and 800deg F.. Heat is rejected in the condeser at 80deg F. Isentropic sxpansion and compression occurs in the turbine and pump respectivel
design the logic to control the temperature in a green house. the temperature between 72 degrees and 80 degrees if the tem is below 72 degrees, a heater must be activated if the tem is above 80 degrees a cooler must be started.
A simple power system consists of a dc generator connected to a load center via a transmission line. The load power is 100kW. The transmission line is 50km copper wire of 3 cm in diameter. If the voltage at the generator terminals is 400V
For each add instruction in this problem, assume that EAX contains the given contents before the instruction is executed, and give the contents of EAX as well as the values of the CF, OF, SF, and ZF flags after the instruction is executed.
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