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A resistor connected across the gate and cathode of a thyristor increase its

  • A resistor connected across the gate and cathode of a thyristor increase its Holding current.
  • The holding current of a thyristor is the minimum current that must flow through the device to keep it in the on-state after it has been triggered.
  • The gate-cathode resistor helps to increase the holding current by providing a path for leakage current when the thyristor is in the off-state.
  • When the thyristor is in the off-state, a small amount of leakage current flows through the device due to the reverse-biased junctions.
  • By connecting a resistor across the gate and cathode of the thyristor, this leakage current has a path to flow, which helps to maintain the on-state of the thyristor and increase its holding current.