Thyristor Turn On Methods
- forward voltage triggering
- gate triggering
- dv/dt triggering
- temperature triggering
- light triggering
Forward voltage triggering occurs when the anode-cathode forward voltage is increased with the gate circuit opened. This is known as avalanche breakdown, during which junction j2 will breakdown. At sufficient voltages, the thyristor changes to its on state with low voltage drop and large forward current. In this case, J1 and J3 are already forward biased.
Read more about this topic: Silicon-controlled Rectifier
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