Find the emission coefficient n

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Reference no: EM13141755

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=0.2A
b. (i) n=5, (ii) Is=1A
c. (i) n=8, (ii) Is=0.347A
d. (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 = 200A
b. (i) Qrr=500 uC, (ii) Irr = 500A
c. (i) Qrr=200 uC, (ii) Irr = 100A
d. (i) Qrr=1000 UC, (ii) Irr = 400A

Reference no: EM13141755

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Find the emission coefficient n : 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.

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