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A silicon p-n-p transistor has impurity concentrations of 5*10^18, 2*10^17, and 10^16 cm^-3, diffusion constants of minority carriers 52, 40, and 115 cm^2/s and minority lifetimes of 10^-8, 10^-7, and 10^-6 in the emitter, base, and collector, respectively. If the base width is 1*10^-6 m, the device cross-sectional area is 0.2 mm^2, and the emitter-base junction is forward bias to 0.5 V, calculate the current components \(I_{Ep}, I _{Cp}, I_{En}, I_{Cn}, and I_{BB}\)
The RS-232 serial port on a personal computer is transmitting 2400-bit/sec data using a polar NRZ line code that has a peak value of 12 V. Assume that binary 1's and 0's are equally likely to occur.
How many voice channels are carried by a E1 transmission given 8 kHz sampling and 8 bit words? Why is an end of frame marker always required in a digital telephony system?
A cable TV company delivers video signals over coaxial cable to individual houses. Video signals occupy a bandwidth of 6 MHz and are stacked in frequency from 50 MHz to 656 MHz without guard bands
The potential energy of a system of two particles separated by a distance r is given by the equation below, where A is a positive constant. U(r) = (A)/(r^11) Find the radial force vector F that each particle exerts on the other.
Control Systems: Operation of a PID, Which one of the following statement regarding to operation of a PID is true?
1.Given S-DOman transfer function H1(s)= 1/(s+2). What is the time response H1(t). 2. Given H2(s)= (2s+5)/(s^2 +3S+2), what is h2(t) 3. Calculate the data value and address location for the following 8-bits date: 01111011 Buss address 10110011
Draw a strain gauge circuit and its external components to attach to a conveyor mounted only at the ends to measure the load at the center of the conveyor. What type of testing would you need to do to establish a baseline and calibration curve for..
A cell phone transmits voice signals on a carrier. the transmissions lie inbetween 900MHz to 900.03MHz. What minimum sampling rate should be choosen so that the transmisions will be recoverable from the digital samles
Supply the quantisation levels (including zero) that are available. Do this for both the three and 4-bit ADC in table form. What is the resolution of each quantizer?
The following test data were obtained from testing a 48kVA, 4800/240-V, step down transformer: Open-circuit test Voltage (V) 240 Current (A) 2 Power (W) 120 Short-circuit test Voltage (V) 150 Current (A)10 Current
Evaluate the size of the solar PV system and Sizing a Solar PV System - What is their monthly average energy use?
For a RL circuit, write a diffedrential equation in which the only time dependant quantity is current (use Kirchoff's loop). Derive an expression for current, i(t), in terms of L,R, and Vo. If Vo=5V, R=2.5 ohms, L=100 nH
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