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The SCR would be turned OFF by voltage reversal of applied anode-cathode ac supply frequency of :

Anurag Mishra Professor Asked on 14th January 2016 in Physics.

1 Answer(s)

Answer: 4. 5KHz

For inverter grade SCR, typical turn off time (t_off) is 5 to 50 μsec
For converter grade SCR, turn off time = 50 to 100 μsec

Supply frequency of 5 kHz will turn off the SCR by voltage reversal, because

(1/ 5000Hz) = 200 μsec.

Pushpendra Pal Dean Answered on 16th January 2016.