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A simple model of a photovoltaic solar cell is a current source, with the current proportional to the amount of sunlight falling on it. A more accurate model includes a diode (a nonlinear element we will see later). There is some leakage current that we can model with a parallel resistor, and there is a voltage drop in the interconnect that we can model with series resistances connecting to the load resistor. So a crude model of a complete system might be the circuit shown below.
In this system we have I = 0.2A, Rp = 3.0Ω, and Rs = 1.8Ω.
You are to determine the load resistance, RL, for which the maximum power is transferred to the load. (Hint: remember your calculus!)
•What is this optimum load resistance (in Ohms)?
•What is the power (in Watts) that is delivered to this best load resistance?
(A)Under equilibrium conditions and T= 0 Kelvin ,what isthe probability of an electron state being occupied if it is located at the Fermi level (B) If Ef is positioned at Ec,determine(numerical answer required) the probability of findingelectrons in..
Given a simple series circuit similar to that shown in the given image, determine the load voltage if the source voltage is VS= 1200°V, the load current is IL= 10-30°A, and the cable impedance is ZC= 0.5
Suppose a fair coin is tossed n times. Each coin toss costs 'd' dollars and the reward in obtaining 'X' heads is aX^2 + bX. Find the expected value of the net reward.
Maximum Amount of Channels A Link Can Carry, A microwave radio link operates over a bandwidth of 400 MHz at C band. The link carries a number of channels of data using FDMA.
At the point you can check a point or two on the V-I curve and confirm that the plot is equivalent to the linear plot in Part 1. Describe a specific measured point on the curve and what it represents.
Draw a timing diagram for an asynchronous SR, clocked SR and clocked D flip-flops undergoing a setting, resetting and latching (hold) condition.
Determine the trigonometric Fourier series representation for the signal f (t) = 2 -1/2
Draw the circuit and discuss the operation of SA type ADC. Determine the conversion time of an SA-ADC for 12-bit resolution,at 2.5 MHz.
The serial adder uses two four-bit registers. Register A holds thebinary number 1101 and Register B holds 1010. The carryflip-flop is initially reset to 0. List the binary values inRegister A and the carry flip-flop after each of of the fourshifts..
Comparing Error probabilities with BPSK and QPSK systems, A BPSK system and a QPSK system are designed to transmit at equal rates; that is, two bits are transmitted with the BPSK system
Use a capacitor, a resistor and an operational amplifier circuit to design an active first order low pass filter which passes frequencies that human can hear (below 15kHz). Show all the calculations required to find the values of all the passive c..
Use a K-Map to simplify the function F(A,B,C,D) = Σ(0,1,2,3,8,9,10,11). Design a circuit that implements this function. Write the VHDL code.
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