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Power ElectronicsAC Power Control

Integral-cycle control is particularly suitable for loads with relatively large thermal time constants, such as?

  • AElectric heaters
  • BHigh-frequency RF mixers
  • CSmall-signal microphone preamplifiers
  • DCrystal oscillators
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Correct Answer: A. Electric heaters
Explanation: Thermal loads respond slowly, so groups of complete AC cycles can regulate average heating power without requiring rapid output response.
Reference: Standard power electronics: ac power control
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