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a) An Si p+-n junction has A=1/100 cm^2 and N(donor)=10^15/cm^3 on the n side. Calculate junction capacitance with reverse bias of 10V.
b) An abrupt p+-n junction is formed in Si with donor doping of Nd=10^15 / cm^3. What is the depletion region thickness W just prior to avalanche breakdown?
Find an interesting (yet simple) circuit (LED flasher, battery charger, audio vu meter, etc.) on the internet and explain (as best as possible) how the circuit works. How does it utilize diodes, resistors, capacitors, transformers.
Calculate the minimum wall thickness for a cylindrical vessel that is to carry a gas at a pressure of 1400 psi. The diameter of the vessel is 2 ft, and the stress is limited to 12 ksi.
A Thevenin equivalent can also be determined from measurements made at the pair of terminals of interest. Assume the following measurements were made at the two external terminals a, b of a circuit.
steam is condensed on the outside of a heated exchanger tube by pressing air through the inside of the tube. the air enters at 1.2 bars, 20 degree c and a speed of 10 m/s. the air exits at 80 degree c. the steam enters 3 bars, 200 degree c
The motor driven by a switch-mode dc-dc converter, which has a bus voltage of 200V. The switching frequency fs = 25 kHz. Calculate and plot the waveforms for va(t), ea(t), ia(t), and id(t) under the following conditions
Write the VHDL ARCHITECTURE file for the Y(5) output only for a 8-to-1 demultiplexer. The inputs are D, the selects S0-S2, and the outputs Y(0)-Y(7). The select lines are BIT_VECTOR types, the data is BIT type and the outputs are BIT_VECTOR types.
The project has been broken down into the following modules: Power supply, Processor and motherboard with RAM, I/O circuit board, CD-ROM drive, Floppy drive LCD display, Keypad, Enclosure and all mechanical parts, Final assembly.
A photoelectric surface has a work function of 4eV. What is the maximum velocity of the photoelectrons emitted by light if frequency 10^15 Hz incident on the surface h = 6.6 * 10^-34 Joules-second e = 1.6 * 10^-19 Coulomb
Write an instruction sequence to set bits 3, 2, 1, and 0 of memory location at $1000 to 1 and leave the upper four bits of the same locations unchanged. use hcs12/9s12 to program.
The data inputs I0 through I7 are wired as follows: I0 = I1 = 0, I2 = I6 = , I3 = I5 = I7 = 1; and I4 = D. (a) Determine the Boolean function that the MUX implements. (b) Implement the function using a 4×1 MUX with minimum extra logic gates.
The torque produced by an external magnetic field is torque = D[5i,-3j] where D is a positive constant, and for this orientation of the loop the magnetic potential energy U = -mu cross B is negative. The magnitude of the magnetic field is 14D/IA
A cube with an edge of length 2 mm is charged to -1.2 C. Find: a)ρv , if the charge is distributed uniformly over its volume ; b) ρs , if the charge is distributed uniformly on its surface; c)ρL , if the charge is distributed uniformly on the edges o..
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