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
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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b
Explanation: E = Ri + L di/dt
Solve the above D.E for I & substitute the above values.
t = 100.503 μsec.