Distinguish between holding current and latching current of SCR

Electrical Engineering Power Electronics
1
  • Latching current is effective at the time of turning ON whereas as holding current is effective at the time of turning OFF the SCR.
  • Latching current is the minimum current that should flow at the time of triggering to turn ON the SCR whereas once the SCR is already in ON state its current should not reduce below holding current otherwise it turns OFF.
  • Latching current is greater than holding current even though their magnitudes are much related.
1 Like