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An increase in the reverse bias base -to-collector voltage reduces the bas width (base modulation effect). At what voltage would the base width be reduced to zero ("punch through" breakdown) if the
There are contacts at the two ends, x=0,W. The contact at x=0 is transparent. Light falls on the contact at x=0 creating electron-hole pairs at a rate GL(x)=GL,0 exp(-x/λ), λ =/= L0. C
Two bit Analog -to -digital converter-MatLab (711) Let X(t)= 0.8 cos(2*pi*t)+ 0.15, 0<=t<=1, and zero otherwise, be the input to a 2-bit analog-to digital converter. The four level quantizer cor
A USB communication link requires a circuit that produces the sequence 00000001. You are to design a synchronous sequential circuit that recognizes this sequence. Additionally, there is an E input t
How many 7475 4-bit latches are needed for a storage array containing eight rows of 32 bits. What types of decoders and/or selectors are needed to read/write any group of 16 bits.
A BJT differnetial amplifier, biased to have re = 100 Ω and utilizing two 100 Ω emitter resistors and 5 kΩ loads, drives a second differential stage biased to have re = 50 Ω.
Gaussian random variable W is known to have P[W>4] = 1/2. Based on this information, (a) sketch its possible PDF. (b) Now also assume that Var[W] is very small. Refine your sketch in the first pa
A current filament is 5 mm long and is situated at x = 0, y = 4, z = - 3 parallel to the x-axis. If the filament carries a current of 3 A along ax , find H at the origin.
Typically a speech signal that can be understood over a telephone shows frequencies from 100 to 5 Khz. What would be the sampling frequency fs(sample/sec) what would be used to sample speech without
It starts from rest at the origin. Show that it moves in a cycloidal path and drift velocity or the velocity of the center of the rolling circle along the z axis. If the electric field is 10^4 volts
To the right of the circuit is an 8H (i1) and a 32H (i2) inductor in parallel. Beneath that and to the right (running up to the parallel inductors is a 3.6 H Inductor (In series). To the right of th
a critically damped parallel rlc circuit is constructed from component valures 40Ω, 8nF, and 51.2μH, respectively. verify that the circuit is indeed critically damped and then explain why t
A voltage source Vs = 10 Cos(10^3t - 90 degrees) v, a resistanceFind the max instantaneous power delivered by the source, dissipated by R, and absorbed by L. What are the smallest instants (t > 0)
A given signal f(t) is multiplied by this periodic signal. Determine an expression describing the spectrum and the time waveform of the resulting amplitude-modulated signal if all componets except
Suppose we transmitted 5 cos wct for logic one and 15 cos wct for logic zero. Find the maximum signal energy. Design a demodulator and show the detection criterion for the output of the demodulator.
Assume that that initial contents of the 9-bit register are 000001011. Specify the sequence of add and shift pulses generated by the control network and specify the contents of the 9-bit shift regis
he storage capacitor in each cell has a capacitance of 50 fF and is fully charged to 5V. Find the worst-case leakage current (i.e. during the refresh cycle 50% of the stored charge is lost) that the
Draw a logic diagram of simple logic that converts the control variables CA, CB, and CC as inputs to outputs that are the SELECT inputs for the multiplexers and LOAD signals for the registers.
Two 5 H inductors connected in series are subjected to an electric current that changes at a rate of 4.5 amps per second. How much voltage will be dropped across the series combination
A circuit consists of a voltage source (Vin = 10 V at 75o phase shift, ω = 10 rad/s) in series with a parallel RL combination (R = 10 Ω, L = 0.5 H), which is in series with a capacitor (
Graded-index separate confinement double heterostructure (GRIN-SCH) InGaAs/GaAs lasers with various cavity lengths were tested in the lab. The 100m wide oxide strip lasers consists of two pairs of 1
IN a 2-pole, 208 V (line-to-line, rms), 60-Hz, motor, Rs= 0.5Ω and R'r = 0.45Ω, Xls= 0.6Ω, and X'tr = 0.83Ω. The magnetizing reactance Xm = 28.5Ω. This motor is suppli
In a 60-HZ, 208 V (line-line, rms), 5-kW motor, R'r = 0.45Ω and X'tr = 0.83Ω. The rated torque is developed at the slip s = 0.04. Assuming that the motor is supplied with rated voltages
A 40 H resistor, a 5 mH inductor, and a 1.25/xF capacitor are connected in series. The series-connected elements are energized by a sinusoidal voltage source whose voltage is 600 cos (8000t + 20°
A circuit element hiden inside a paper bag draws a current that varies with time t (in seconds) according to the current function i(t) = 0.032 sin(2350·t) Amps, while the voltage drop across