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Suppose a PV module has the 1-sun I-V curve shown below. Within the module itself, the manufacturer has provided a pair of bypass diodes to help the panel deliver some power even when many of the cells are shaded. Each diode bypasses half of the cells, as shown. You may consider the diodes to be "ideal;" that is, they have no voltage drop across them when conducting.
Suppose there is enough shading on the bottom cells to cause the lower diode to start conducting. Draw the new "shaded" I-V curve for the module.
Design a BJT differential pair amplifier (balanced in, unbalanced out) that provides 20 dB differential gain and 40 dB CMRR. Assume b = 100, ro = 50 KW. Use dual dc power supplies +Vcc and -Vee.
Describe the PAR mechanism incorporated with TCP and in support of IP. ? What is the purpose of the three-way handshake?
The capacitances of a 3-phase belted cable are 12·6 μF between the three cores bunched together and the lead sheath and 7·4 μF between one core and the other two connected to sheath.- Find the charging current drawn by the cable when connected to ..
Toroidal coil of square cross section with N turns carrying current I. The inner radius is a, the outer radius is b. Height of the toroid is h. Solve for magnetic field density and magnetic flux everywhere in space. Find vector potential, A, of th..
A balanced transmission line picks up an undesired signal with a 5-mW level. After conversion to an unbalanced signal using a center-tapped transformer, the undesired signal is 0.011 uW. Calculate the common mode rejection ratio (CMRR).
Calculate the efficiency of a 500V shunt motor when taking 700A from the following data taken when the motor was hot: motor stationary, voltage drop in the armature winding 15V.
A proton moves around a circular path ( radius = 2.0 mm ) in a uniform .25-T magnetic field. what total distance does this proton travel during a 1.0-s time interval ( m= 1.67x10-27 kg = 1.6x10-19 C)
Construct the model shown in Figure 1 using Matlab Simulink. Calculate the efficiency of the motor under the loading condition of Section 4
Use Gauss's law to obtainexpressions for the electric field intensity E in both regions: r> a and r
Consider a product data sheet for a photo-detector that states an optical power level of -32dbm is need at the photo-detector to specify performance requirement. What is the power level nW (nano Watts)
Consider the LTI described by the following input-output relation: y[n] = 3/4y[n-1]-1/8y[n-2]+x[n] a)Find system function H(z) and check is system is stable. b)Determine impluse response h[n] of system
a) The input signal to an amplifier is -20 dBm. What is the input signal power in mW. Given the input signal and noise power in parts (a) and (b), what is the input signal-to-noise ratio in dB.
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