ISRO Electronics & Communication (ECE) 2023 - Question 49

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Topic: Analog Circuits

Compared to Linear power supplies SMPS offers

  • A. Higher Efficiency
  • B. Better ripple performance
  • C. Gives better regulation
  • D. None of the above

Answer: A. Higher Efficiency

Explanation: Switched-Mode Power Supplies (SMPS) operate their switching elements (transistors) either fully ON or fully OFF, dissipating very little active power. This results in much higher efficiency compared to linear power supplies, which operate transistors in the active region dissipating excess power as heat. Linear supplies typically excel in ripple and regulation.

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