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construct a temperature sensor for measuring the ambient outside temperature in Borrego Springs (-30oC T 40oC). You decide to base operation of the temperature sensor on the change in resistance associated with a bar-shaped piece of n-type Si. A relatively small cross section would allow a more rapid response to temperature change. To be specific, use a bar of 1 cm long with an area of 1 mm x 1 mm.
(a) Restricting yourself to nondegenerate dopings and also requiring the resistance to be readily measured with a hand-held multimeter (say 1 R 1000), what is the range of doping? Pick a doping concentration in the mid range.
(b)check the doping concentration you picked can work within the specified temperature range. (c) Derive an expression for the sensitivity (dR/dT in ?/ oC) of your sensor. (d) Is it preferable to use low or high dopings?
A painter is standing on a work platform that is 27 feet above ground level. For fall protection, the worker''s safety harness D-ring is attached to a 12-foot shock absorbing lanyard that is securely fastened to the structure at a point 40 feet above..
What is the effect of a frequency difference between the carrier and local oscillator on output quality? Show mathematically.
Using the Routh Hurwitz method, find the values of k for which the following polynomial has all its roots to the left of s = -1.
b) Draw the LFSR circuit to generate the CRC. Generate the CRC by applying the data pattern to the LFSR and verify the answer in part a. c) An error vector is given by X7+ X6+ X4+ X3+1. What is the received bit pattern corresponding to part a
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
A load has a 20 ohm resistor and a 4 Henry inductor connected in series. It is connected to a power source with v(t) = 100 cos(50t), connected in series to the load. What is the impedance of the load? Use phasor transform methods to obtain your an..
The message signal x(t), in the following system has a nabdwidth of 10kHz. The center frequecy of the Narrow Band Frequency Modulated (NBFM) signal nbfm(f) is 1Mhz, the frequency deviation f1=1khz and the amplitude of the NBFM signal is 1V.
A series of combination having R=2Mohm and C=0.01 UF is connected across a D.C. voltage source of 50V. Determined capacitor voltage and charging current after 0.02s, 0.04s and 1 hour.
the solutions at both frequencies about a total transit time of 1000 years (speed of light in a vacuum result) such that subtracting one from the other leaves just the delay that is of order of 1 second.
Each of the capacitance units is built of 4 similar 100V capacitors. Determine the capacitance of each capacitor.
What is the frequency of the rotor currents? What is the angular velocity of the stator field with respect to the stator? With respect to the rotor?
computation with 5% of the code that cannot be paralleled, compute the speedup and efficiency.
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