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A silicon p-n-p BJT was designed to have doping levels of 1020 cm-3, 1015 cm-3, and 1017 cm-3 in different parts.
a. Identify which doping level was intended for the emitter, for the base, and for the collector.
b. Assuming the intrinsic carrier concentration (ni) in silicon to be 1010cm-3, calculate the Fermi Energy, EF, relative to the intrinsic Fermi energy, EFi for each layer.
c. Hence draw the energy band diagram for the BJT labelling the energy scale clearly to show the relative positions of EF and EFi across the structure.
d. Calculate the built-in potential at each junction in equilibrium (no bias conditions).
A point charge is placed at the origin of the spherical system of coordinates. a) Calculate the total energy stored in the space between R=a and R=b (b>a); b) What is the energy stored between R=b and R=5b
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)
Design a 3 th order high - pass Butterworth filter with a High Frequency gain of 20 DB and a cutoff frequency of 20 rad/s. 2) Using MATLAB, plot the frequency respon se of this filter, and the location of the filter poles.
A 1 A diode can deliver 1 A up to 75ºC with a derating factor of 8.5 mA/ ºC (this means that the current must be reduced by 8.5 mA for each degree above 75ºC). How much current can be drawn at 110 ºC
what single amount at the end of seven years is equivalent to a uniform annual series of %5000 per year for 12 years if the interest rate is 8% compounded annually
A mass "m = 2 kg" is connected to a spring with spring constant "k= 5 N/m " on a frictionless table oscillation only in 1-D (x direction) . The equation of motion for the mass is given by the equation m (d^2 x(t)/ dt^2) = -kx(t) .
A parking garage charges a $ 5.00 minimum fee to park for up to three hours and an additional $ 1.00 per hour for each hour over the hours. the maximum charge for any given 24 hours period is $ 2.00.
Consider a direct sequence spread spectrum (DSSS) system attempting to transfer data. The DSSS system has a data rate of 2 Kbps (2 thousand bits/sec) which is spread to 2 Mcps
An ignition coil has an inductance of 1.75 henrys and an internal resistance of 6 ohms. It is connected to a 13.5 volt automotive DC source. The switching opening speed of the points is 0.17 milliseconds
Three capacitors are found that each have an impedance of -j2.0, and they are connected in parallel with the load in a wye configuration. Determine the power factor of the combined load as seen by the source.
a 14-bit successive approximation adc is used to sample a signal that has a full-scale range of 8V and a clock frequency of 12 MHz and a jitter of 50ns.initially this is used without a sample and hold amplifier.
The 8086 Microprocessor Operating Systems and System Interrupt services, Please help me write a program that will display the hex code for any key, or key combination, that is pressed on the keyboard.
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