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For a forward conducting SCR device, as the forward anode to cathode voltage is increased

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in Power Electronics by (27.1k points)
For a forward conducting SCR device, as the forward anode to cathode voltage is increased

(a) the device turns on at higher values of gate current

(b) the device turns on at lower values of gate current

(c) the forward impedance of the device goes on increasing

(d) the forward impedance of the device goes on decreasing

This question was posed to me in an internship interview.

The query is from Thyristors-2 topic in portion Power Electronics Devices of Power Electronics

1 Answer

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by (45.1k points)
Right choice is (b) the device turns on at lower values of gate current

Explanation: Higher the value of anode-cathode forward voltage, lower the gate requirements of the device. Also, the forward resistance of the device is always constant as long as the junction temperature is constant.

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