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In the UJT firing circuit, the pulses are generated while the

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+1 vote
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in Power Electronics by (27.1k points)
In the UJT firing circuit, the pulses are generated while the

(a) capacitor charges

(b) capacitor discharges

(c) capacitor voltage is zero

(d) there is no capacitor in a UJT firing circuit

The question was posed to me in an online quiz.

My query is from Firing Circuits-3 topic in portion Other Circuits of Power Electronics

1 Answer

0 votes
by (45.1k points)
Correct option is (b) capacitor discharges

Explanation: Answer: When the C starts to discharge through the resistance with time constant RC the UJT turns on & hence pulses are generated.

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