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1. Find the built-in potential for a p-n Si junction at room temperature if the bulk resistivity of Si is 1Ωcm. Electron mobility in Si at RT is 1400 cm2 V-1 s-1; μn/μp = 3.1; ni;= 1.05 x 1013 cm-3.
2. For the p-n Si junction from the previous problem calculate the width of the space charge region for the applied voltages V = -10, 0, and +0.3 V. ∈si = 11.9
What is the expression for Js x R needed so one can find the magnetic field intensity H at z=h d. What is the expression for the magnetic field intensity H at z = h
Loop antennas are very common and are often used by amateur radio sites. In fact, the figure on the right is provided as an example what one may find when searching for loop antennas on the web.
Consider a 4-bit unipolar binary-weighted D/A converter with v(1)= 1 V, V(0) = 0 V, and Rf= 8R. Obtain the analog output voltage for each of the digital inputs from 0000 to 1111
Electrons and holes are moving in a uniform, one-dimensional electric field E = +2500 V/cm. The electrons and holes have mobilities of 700 and 250 cm2/V · s,respectively. What are the electron and hole velocities If n =1017/cm3 and p =103/cm3
Consider a 3 phase, 2 pole induction machine. Neglect the stator windings resistance and the leakage inductance. The rated voltage is 208 V (line-line, rms) at 60 Hz. Lm=60 mH, and the peak flux density in the air gap is 0.85T.
If an external load is to be placed across teh current phasor source, find the Thevenin source equivalent of the circuit described. Draw the original circuit and the Thevenin equivalent circuit. What must the load be to extract maximum power from ..
Given: The terminal pair of a hidden circuit has an open circuit voltage of 200 V. When a 50 k? resistor is placed across the terminal pair, a potential of 80 volts is observed. Required: Determine the terminal voltage that would result if the 50 k
find a minimal two-level NAND realization for each of the following switching functions. a) f(A,B,C) = sum m(0,2,3,7) b) f(A,B,C,D) = sum m(0,2,8,10,14,15) c) f(A,B,C,D,E) = sum m(4,5,6,7,25,27,29,31)
A 10 ohm resistor and 10 henry inductor are attached in series to a 10 volt DC supply. If the current i(0)=2.5 amperes, what is the current after 1 second
Determine the Polar form of the Impedance for the three components when they are Connected in series circuit and when they are connected in a parallel circuit. Determine it the final impedance is inductive or capacitive. Given: VPP = 400V, IRMS = ..
how big will be inductance of coil if it is connected in series with resistor 30 omega on AC circuit with input voltage with RMS value U1=(220+2*1.7) V and frequency 50 Hz if power factor of the circuit is 0.6
the energy crisis - what are your thoughts to this student. it is my opinion that we should begin to loosen our
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