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Electronic Devices & CircuitsRectifiers & Filters

A capacitor filter connected across a rectifier load primarily reduces ripple by?

  • ACharging near voltage peaks and discharging through the load between peaks
  • BBlocking all DC current
  • CIncreasing the supply frequency
  • DMaking the diode permanently reverse biased
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Correct Answer: A. Charging near voltage peaks and discharging through the load between peaks
Explanation: The capacitor charges when the rectified voltage rises and supplies load current while the rectified input falls, smoothing the output voltage.
Reference: Standard electronics: capacitor filter
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