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The magnitude of gate voltage and gate current for triggering an SCR is

(a) inversely proportional to the temperature

(b) directly proportional to the temperature

(c) inversely proportional to the anode current requirement

(d) directly proportional to the anode current requirement

This question was posed to me in an interview for job.

This question is from Firing Circuits-1 in portion Other Circuits of Power Electronics

1 Answer

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by (45.1k points)
The correct choice is (a) inversely proportional to the temperature

The explanation: Higher the temperature lesser will be the gate current required as the temperature must have already excited some of the atoms.

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