Power Electronics
How can we protect SCR from thermal conditions ?

 Using equalizing circuit.
  Using heat sink.
 Use of snubber circuit.
 Using CB and fuse.

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Power Electronics
In reverse blocking mode of a thyristor

  junction J1, J3 is in reverse bias and J2 is in forward bias.
 junction J2 is in reverse bias and J1, J3 is in forward bias.
 junction J1 and J2 is in forward bias and J3 is in reverse bias.
 junction J3 is in forward bias and J1, J2 in reverse bias.

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Power Electronics
During gate recovery time

  charge carriers of J2 junction recombined.
 charge carriers of J2 junction is swept out.
 charge carriers of J3 junction is removed.
 charge carrier of J1 junction removed.

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