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Power ElectronicsSCR Commutation

Forced commutation is especially required for a conventional SCR in many?

  • ADC circuits
  • BPurely line-commutated AC circuits only
  • CPassive resistor networks with no source
  • DUncontrolled diode rectifiers
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Correct Answer: A. DC circuits
Explanation: A DC source has no natural current zero, so auxiliary circuitry is often required to force SCR current below holding current.
Reference: Standard power electronics: scr commutation
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