Latching current for an SCR is 100 mA, a dc source of 200 V is ___

Latching current for an SCR is 100 mA, a dc source of 200 V is also connected to the SCR which is supplying an R-L load.

Compute the minimum width of the gate pulse required to turn on the device.

Take L = 0.2 H & R = 20 ohm both in series.

A. 62.7 μsec
B. 100.5 μsec
C. 56.9 μsec
D. 81 μsec

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Answer: B

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