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A silicon wafer is uniformly doped with 5.5 X 10^16 phosphorus atoms/cm^3 and 4.5 X 10^16 boron atoms/cm^3. a) Find the electron and hole concentrations, the electrons andhole mobilities, and the re
Sketch an AND circuit using bipolar junction transistors. Briefly explain how input combinations produce the desired output. Sketch and XOR circuit using transistors. Briefly explain how input combina
Find the magnetic field from a uniform current density J in a cylindrical conductor withits axis along the z-axis, and express it in cartesian coordinates
A 120V wye connected, 60Hz synchronous motor has a synchronous reactance of 3 ohms and an armature resistance that can be ignored. The motor draws 17 kVA at 0.8 pf leading. What is the motor armatur
A plane wave is obliquelyincident on a perfectly conducting half-space. The magnetic field is perpendicular to the plane ofincidence. The incident E has an amplitude of1V/m,and the incident angle is
A capacitor is formed by two metal parallel plates with thearea 5.1 um*um. The distance between plates is 4.3 um. The gap between plates is filled with the dielectric material with dielectric consta
A 4.8 mF capacitor has been charged to11 V. The energy storedin the capacitor is used to light up a 0.3 KOhm lamp. Find the current flowing through the lamp 2.1 sec after the switch was turned on.
The quality control department at Alexander fasteners measured the length of 100 bolts randomly selected from a specified order.The mean length was found to be 9.75 cm, and the standard deviationwas
Construct a block diagram and an ASMD chart for digital system that counts the number of people in a room. The one door through whichpeople enter the room has photocell that changes a signal x from
It is required to design an equivalent analog filter using a digital filter and other appropriate components. Thesampling frequency is fsamp= 20 kHz and the attenuation (α)specifications of th
A MEMS device has a pin that is to be drilled through the center. A camera is used to position a laser beam for this purpose. The center of the beam is to be retrieved using a threshold in gfilter on
Such an adder is called aripple-carry adder. Overflow (or underflow in subtraction) isdetected by an additional small logic circuit where the inputs areprovided by the sign bits of the input and out
The 16giga-byte (GB=2^30 bytes) flash memory chip for an MP3player is 11mm by 15mm by 1mm. This memory chip holds 20,000photos. a) How many photos fit into a cube whose sides are 1mm
Consider a coaxial transmission line that consists of inner andouter conductors of radii a and b, and is filled with an electroncloud with a volume charge density ofρv=γ/ρ[C/m3] fora&l
Design a single-pole PIN diode switch operating at f = 8 GHz. A PINdiode has the following parameters: Cj = 0.03 pF, R(forward) = 0.2Ω, R(reverse) = 7 Ω, Li = 0.6 nH, Zo = 50 Ω. Fi
Assume you have a 3-bit pre-packaged counter. You cannot modify thecounter except for hooking logic to the inputs and outputs. Thecircuit has synchronous load and synchronous reset control inputs.Th
a load consisting of induction motor is draming 80 kw from a 220 v ,60 hz power line of 0.72 lagging .find the capacitance of a capacitor required to raise the pf to 0.92
Given that Vs1 is 11 V, Vs2 is 20 V, Is is 4.5 A, R1 is 12 Ohm, R2is 26 Ohm and R3 is 41 Ohm. Use the source transformations to reduce the circuit to a single voltage source in series with asingle r
Design an Ag/AgCl electrode that will pass 150 mC of charge without removing all the AgCl. Calculate the mass of AgCl required. Show the electrode in the cross section and give the active area.
Design a system that has as inputs the scalar voltages of lead II and lead III and as output the scalar voltage of the cardiac vector M.
Construct a ladder schematic with a holding circuit to energize a relay. The relay when enerigized will turn one of and turn a different lamp on.
Construct a 2 rung ladder schematice with an AC source with overload protection in the main line, the schematic will contain 1 rung with a lamp load controlled by a N.O. Push button. On the second r
Construct a ladder schematic of a series cirucit with a DC source, overload protection, ground, and a SPST control operating a lamp.
You must use the internal resistance of the one shot, and an external resistor. Besides your calculations, draw the one-shot and show how to connect the appropriate resistors, capacitors, Vcc, etc
A receiver requires 20 mW as input power. If all the system losses add up to 40 dB, then How much poweer is required from the source