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a) A silicon step junction diode with NA acceptor atoms on the p side and ND donor atoms on the n side is fabricated. The diode is not ideal. What is the dominant current mechanism for forward applied voltages close to zero?b) What is the origin of the reverse saturation current in an ideal diode?c) A silicon n+ - p step junction diode with ND = 1016/cm3 concentration has a built in potential of 0.656V at room temperature. What is the peak value of the electric field in the depletion region?d) For the diode in problem 2c above, what is the width of the depletion region?
Design a decade counter (negative edge-triggered counter) using flip flop circuit that can be used to perform binary counting. Show the timing diagram for the input and four outputs of the decade counter.
An ordinary broadcast television channel has a bandwidth of 6 MHz. How many FM radio stations (with a bandwidth of 200 kHz each) could be accommodated in one television channel using FDM
PLC 2 In a motor control system, one master stop pushbutton (Stop) is available for stopping the operation at any time. If the temperature switch (TSW) is closed, pressing the red pushbutton (RedPB) will turn on both motors M1 and M2.
An amplifier represented with an input resistance of 10k ohm, an output resistance of 1k ohm, and the open circuit voltage gain of 1000 V/V is connected to a signal source of 10 mV peak amplitude with an internal resistance of 100k ohm.
The solutions to Schrodinger's wave equation for a particular situation is given by Psi(x) = sqrt(2/ao)*e^-x/ao. Determine the probability of finding the particle between the following limits: (a) 0
Multiple charges at different locations are said to be in equilibrium if the force acting on any one of them is identical in magnitude and direction to the force acting on any of the others. Suppose we have two negative charges
Let O be a measurement operator for the of dots facing upwards on a 6-sided 'quantum' die-- a die that can be put into superpositions of states and then measured. The set of possible outcomes is {1,2,...6}.
(a) Determine the minimum required sampling rate fsamp(min). Hence, use twice this value. (b) Draw a block diagram of the system indicating the requirements of each block. (c) Design and write the difference equations of the digital filters needed.
The length of GaAs laser resonator is L = 165 um; the width and the thickness are W = 10 um and d = 0.1 um. Find the photon round-trip time in this resonator. The refractive index of GaAs is 3.7.
Explain how to use the knowledge of Structure-Property-Processing-Perfomance relationship to improve on a device based on semiconductivity. Name the device, describe how it is made, the principle guiding its function and application.
Message signal m(t) = 0.6sin(27r3000t + pi/9) For a carrier signal with amplitude Ac = 4,fc = 40MHz, What is the signal bandwidth if we use AM with ka = 0.7 DSB-SC FM with kf = 5000 - HZ/V
Draw the logic diagram for the 4-bit circuit, using full adders and multiplexers. Determine the arithmetic operation performed for each of the four combinations of S and Cin: 00, 01, 10, and 11.
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