Power Electronics
Which of the following is disadvantage of fast recovery diodes?

 None of these.
 Recovery is only 50 µs.
  Doping is carried out.
 Recovery is only 5 µs.

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Power Electronics
In forward blocking mode of a thyristor

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

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