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>Comparison Between Half-Wave and Full-Wave Voltage Doublers

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June 13, 2011 by todayscircuits


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Half-Wave Voltage Doubler

  • Availability of common point between input and output lines for earthing – Yes, available
  • Ripple Content – High
  • Ripple Frequency – Supply Frequency
  • Voltage Regulation – Poor
  • Maximum Voltage Across Each Capacitor – 2 Vs max
  • PIV Rating Of Each Diode – 2 Vs max

Full-Wave Voltage Doubler

  • Availability of common point between input and output lines for earthing – No, not available
  • Ripple Content – Low
  • Ripple Frequency – Twice Supply Frequency
  • Voltage Regulation – Better than that of half-wave voltage doubler
  • Maximum Voltage Across Each Capacitor – Vs max
  • PIV Rating Of Each Diode – 2 Vs max
It is seen that half-wave or full-wave voltage doubler circuits provide twice the peak voltage of the transformer secondary while requiring no centre-tapped transformer and only 2 Vs max PIV rating for diodes.
The advantage of a full-wave voltage doubler over an half-wave voltage doubler is that the output ripple frequency is twice the supply frequency and it is easier to filter high frequency ripples. The drawback of a full-wave voltage doubler is that common ground between input and output is not available


One thought on “>Comparison Between Half-Wave and Full-Wave Voltage Doublers

  1. akanksha says:

    theme added more intrest in reading the content n good xplanation given for the ckts

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