Electronics and Communication Engineering - Electronic Devices and Circuits - Discussion
Discussion Forum : Electronic Devices and Circuits - Section 3 (Q.No. 22)
22.
The SCR would be turned OFF by voltage reversal of applied anode-cathode ac supply of frequency of
Answer: Option
Explanation:
For inverter grade SCR, typical turn off time (toff) is 5 to 50 μsec while 50 to 100 μsec for converter grade SCR.
Hence supply frequency of 5 kHz will turn off the SCR by voltage reversal
because 
= 200 μsec.
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