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A gallium-arsenide crystal at 200K containing only donor impurities was found to have hole concentration to be one fifth that of the electron concentration. Determine the actual carrier concentrations and the doping concentration of the crystal.
an electric kettle is required to heat 0.6 litre of water from 10 degrees celcius to boiling point in 5 minutes,the supply voltage being 240 volts. The efficiency of the kettle is 87%. Assume the specific heat capacity of water to be 4190J/kg.K
Create a function that transmits one byte to an HD44780 LCD controller using the following sequence. Allow one microsecond between each instruction. To clock in a byte: Set the E line low.
Discuss some key characteristics of "load lines". What information does a load line provide you. Discuss key quantities from a zener diode data sheet. What are most important for a circuit designer.
Which of the following is not an advantage of SPI transmission over SCI transmission Error checking via parity bit Faster transmission Master-slave capability Synchronous transmission A HCS12 embedded timer is in PWM mode.
Given the narrow audio bandwidth of a telephone transmission facility, a nominal SNR of 56DB and a distortion level of
The design must show all stages used in its development and must be implemented and tested in PSpice and suitable timing waveforms produced.
What is the (approximate) maximum electric field intensity for which constant mobility may be assumed for electrons in silicon. In a digital circuit with a supply voltage of 1V, what is the corresponding gate length for MOS transistors.
The average orbital radius of Neptune is 2.8 billion miles. Given that distance, how long on average does it take light from the sun to reach the planet Neptune in hours (Speed of light in English system = 186,282.4 miles/second)
A current I = 20
A solar cell with an area of 4 cm^2 has I-V characteristics under illumination from a 600 W source it drives a load of 5 ohms. calculate power delivered to load and efficiency of solar cell.
y''(t) = %u2013 25 y, subject to the two initial conditions y(0) = 0.2 and dy(0)/dt = 0. You will need to use integrating op amps for this design. b)What function will the output voltage y(t) be
Calculate the location of Ei in silicon at liquid nitrogen temperature(77k), at room temperature 300k and at 100 degree celsius (let mp =1.0mo and mn= .19m0) Is it reasonable to assume that Ei is the center of the forbidden gap
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