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A pn-junction is formed in silicon by doping one side with acceptor atoms at concentration Na = 10^19 cm^(-3) and another side with donor atoms at Nd = 10^18 cm^(-3). Answer the following questions:
A. What is the dopant concentration on the p-type side and on the n-type side?
B. For the n-type side of the pn-junction at room temperature:
1. What is the hole and electron concentration on that side?
2. What is the resistivity of a silicon on that side (you can use approximate values for mobility from the graph)?
3. Assuming hypothetically that there is an electric field 100 V/cm, what would be the drift current density?
C. What is the value of the built-in potential barrier of the junction?
D. What is the depletion layer width of the pn-junction?
E. What is the width of the depletion layer on the p-type side?
what is the magnitude and direction of the current flowing through the cross section?
What is the difference between a D flip-flop and a J-K flip-flop How does the number of inputs affect the possible synchronous states of a flip-flop (Set, Reset, Hold, Toggle)
1- What is the magnitude of the impedance of a capacitor of 29 F at an angular frequency of 644 rad/s (1 decimals in ) 2- What is the phase angle of the impedance of a capacitor of 40 F
What should be the filter's passband cut-off frequency?(DSP Question).
Assume that a load Z absorbs power of 150 W at a lagging power factor of 0.8, and the voltage across the load Z is 220 Vms, 50 Hz. What must be the value of capacitor that needs to be connected in parallel with the load Z
When a square wave with a fundamental frequency of 2khz and amplitude 5v and comprised of up to five odd harmonic (each successive odd harmonic having half the amplitude of its predecessor) is passed though a standard telephone line of bandwidth o..
Design a synchronous circuit that implements a 4-bit decade (modulo-10) counter (0000,0001, ..., 1001, 0000,...) a. Fill in a transition table (using don't cares for undefined next states).
Machine A was purchased three years ago for $10,000 and had an estimated market value of $1,700 at the end of its 10-year life. Annual operating costs are $1,350. The machine will perform satisfactorily for the next seven years.
build a cicuit that must be able to operate a 3 amp load of the LED while being able to operate at voltages around 3V or 6V. It must be able to keep the LED on constantly while also being able to pulse the LED.
The coefficient of coupling between two coils is 0.45. The first coil has an inductance of 75 mH and the second coil has an inductance of 105 mH. What is the mutual inductance between the coils
Computer the following assuming each number is a two's complement number and indicate the inputs and final result in decimal. Also, indicate if the number overflows. a. 01 + 1011 b. 11 + 01010111 c. 1101 + 110 d. 01 + 10 e. 111 + 111111
Efficiency in a power transformer is 98.6 percent when loaded such that its core losses equal the copper losses. Calculate the per unit resistance of this transformer.
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