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An ideal n+/p diode has only the quasi neutral p region of length L illuminated with light such that GL electrons/cm3-s are generated uniformly throughout the region. There is no photo-generation occurring elsewhere in the diode. Derive the current vs. applied voltage VA for thisdiode by answering the following questions. Since the diode is n+/p, we need only determine excess carrier concentration on the p side of the device.a) Following the ideal diode derivation, where in the diode will the current density be evaluated?b) What is the simplified form of the minority carrier diffusion equation in the quasi-neutral p region of the diode? What is the general form of the solution?c) What are the boundary conditions for the quasi p region of the diode assuming an external voltage VA is applied and light is illuminated on the p side? Assume L approaches an infinite value (i.e. L >> Ln ) and any injection of excess carriers is low level.d) From the general solution and the boundary conditions, determine the expression for the I-V characteristics of this photo-diode.
There are 5280 feet per mile. There are 3 feet in a yard. Use appropriate parameter passing and return mechanisms. Use appropriate datatypes. For example, with inputs of 1760 yards and 1320 ft, the result would be 1.25 miles.
Store the arrival times in memory locations starting from $1000.(Do this is in C. Store the results in an array and don't worry about the speci c location of the results.)
Calculate: a. The rated primary and secondary currents b. The secondary voltage if it is connected at full load of 2000 kW c. The voltage regulation from no-load to full load. Voltage regulation is given by: (E(no-load)-E (full-load))/E(full-load)..
consider a running motor with Z = 6 + j7 ohm A) calculate the line crurrent if the motor is operated at 120 VAC RMS B) calculate the required paralell capacitor value to reduce the line current to a minimum
A single-phase, half-wave SCR circuit is used to control the power consumption of an inductive load. The resistive component of the load is 5 Ohm. The source voltage is 120 V (rms). When the triggering angle is adjusted to 60 degrees
PLC 2 In a motor control system, one master stop pushbutton (Stop) is available for stopping the operation at any time. If the temperature switch (TSW) is closed, pressing the red pushbutton (RedPB) will turn on both motors M1 and M2.
To analyze electric circuits, it is often necessary to solve simultaneous equations. To find the voltages Va, Vb, and Vc at nodes a, b, and c, the equations are 2(Va-Vb) + 5(Va-Vc) - e^(-t) =0 2(Vb-Vc) + 2Vb + 3(Vb-Vc) =0
50 kg of a certain gas is contained within a piston-cylinder assembly. the gas undergoes a processwhich the pressure volume relationship is PV = constant. (n=1.5) the given conditions as follows : p1= 6 bars, v1=0.2 cubic meters ,and v2= 0.4 cubic..
An analog system has a bandwidth of 10 MHz, a photodetector of = 0.5 A/W and ID = 1 nA, and a signal to noise ratio (SNR) of 30 dB. The receiver's temperature is 270 C and the load resistance is 50 .
What are the design implications for the location and positioning of solar cells? Explain why the use of solar cells might be more appropriate in some regions of the country.
Suppose that OFDM is used with 15 kHz subchannels. (Two subchannels are used as guard channels on either side of the band.) Specify an OFDM symbol rate and modulation format for each subchannel that can achieve the target rate.
Earth-based 802.11a or 802.11g wireless LAN standards transmit data using a bandwidth of 16.56 MHz. What is the theoretical thermal noise level (in V) in an ideal receiver operating with an input impedance of 50 ohms
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