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Power Electronics - Diode
[Power electronics] The measured values of a diode at a temperature of 25 Degrees Celsius are: Vd=1V at Id=50A, Vd=1.5V at Id=600A.Determine (i) the emission coefficient n, and (ii) the leakage current.Answers:a. (a) n=6, (b) Is=0.2Ab. (i) n=5, (ii) Is=1Ac. (i) n=8, (ii) Is=0.347Ad. (i) n=8, (ii) Is=1A
The reverse recovery time of a diode is trr=5 usec, and the rate of fall of the diode current is di/dt = 80A/usec. If the softness factor is SF = 0.5, determine (i) the storage charge Qrr, and the peak reverse current Irr:a. (i) Qrr=900 uC, (ii) Irr = 200Ab. (i) Qrr=500 uC, (ii) Irr = 500Ac. (i) Qrr=200 uC, (ii) Irr = 100Ad. (i) Qrr=1000 UC, (ii) Irr = 400A
The basic column control system shown in Figure is somewhat more complicated than the basic neutralizer control system
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Zener Diode and Series Resistance, In the zener diode circuit calculate the value of the current through the zener diode if the power supply is rated 24 volts at 500 milli amperes
The op-amp circuit measures the changes of temperature in a system. The output voltage is given by v0(t) = -R(t)vi(t). Suppose that the temperature in the system changes cyclically after t = 0, so that R(t) = [1 +0.5 cos(20πt)] u(t) and let the in..
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