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A GaAs device is doped with a donor concentration of 3e^15/cm^3 . For the device to operate properly, the intrinsic carrier concentration must remain less than 5% of the total electron concentration. What is the maximum temperature that the device may operate? Note: Although the band gap and the density of states vary with temperature, those variations are much slower compared to the exponential factor e^(-Eg/2KT)
Define Design with Multiplexer, Design a circuit using one 16 TO 1 multiplexer with W, X,Y,Z on the control inputs
1. What are some of the fundamental differences between ladder logic programs and relay logic diagrams 2. What are the advantages and disadvantages of a PLC simulation software with virtual input
A baseband sine wave signal with frequency 4.0 kHz is modulated onto a carrier at 1.050 MHz using DSB-LC AM. What are the frequencies of the sidebands of the RF signal?
A person shuffling across a dry carpet can be approximately modeled as a charged 100-pF capacitance with one end grounded. If the person touches a grounded metallic object such as a water faucet, the capacitance is discharged
Boron donor atome at a concentration of 10^15 cm^-3 are distributed uniformley throughout a silicon sample. The sample is then also doped with 6*10^15 cm^-3 of phosphorous. calculate the position of the Fermi level
A 1.0 dc voltage source is connected across a 10 ohm resistor. What is the current through the resistor if (a) the voltage source is ideal (b) the voltage source has internal resistance 0.1 ohm (c) internal resistance 1.0 ohm
For computer chip of 10mm (length), 5 mm(width) is operated by power of 0.645 watt, which surrounded by coolant material of temp of 80 F. Find the Surface Temperature in K of the computer chip during the heat transfer of convection.
calculate the resistor's resistance. If the bandwidth were cut to 25 kHz, determine the expected output meter reading.
Design the combinational logic circuit for an elevator controller such that the option to go up or down by only one floor is disabled. Assume that the building the elevator is in has 4 floors. Your inputs are the current floor and the next request..
A certain mixer is producing the following frequencies: 900 kHz, 700 kHz, 500 kHz, and 200 kHz. What are the two most likely input frequencies?
The circuit will have as inputs a minimum of two inputs; the binary equivalent of two decimal numbers of not greater than (10,000)10. The circuit will also produce a minimum of two outputs, the quotient and the remainder.
Using a shorted stub to match load, what is the lenght of the line where the normalized input Y is 1 + jb . If the characteristic impedance of the shorted line is 40 ohms, what is the length of the stub length.
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