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Which of the following devices does NOT require a continuous base drive?

Which of the following devices does NOT require a continuous base drive? Correct Answer SCR

  • The power transistor has a low current gain and requires continuous base drive (BJT) or gate drive (MOSFET) to maintain the device in the ON state. This increases the power requirement and reduces the efficiency to some extent.
  • SCR does not require a continuous base drive and it requires only a narrow trigger pulse to turn it ON.
  • Power transistors do not require a commutation circuit whereas thyristor requires a commutation circuit.

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