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Consider the following statements: SCR can be turned on by 1. Applying anode voltage at a sufficiently fast rate 2. Applying sufficiently large anode voltage 3. decreasing the temperature of SCR 4. Applying sufficiently large gate current Which of the above statements are correct?

Consider the following statements: SCR can be turned on by 1. Applying anode voltage at a sufficiently fast rate 2. Applying sufficiently large anode voltage 3. decreasing the temperature of SCR 4. Applying sufficiently large gate current Which of the above statements are correct? Correct Answer 1, 2 and 4

Thyristor turn-on methods:

With anode positive with respect to cathode, a thyristor can be turned on by any one of the following techniques:

  • Forward voltage triggering: by applying sufficiently large anode voltage
  • Gate triggering: by applying sufficiently large gate current
  • dv/dt triggering: by applying anode voltage at a sufficiently fast rate
  • Temperature triggering: by increasing the temperature of SCR but at large values of temperature, the SCR may get damaged.
  • Light triggering

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