Electrical

Greinacher Voltage Doubler Circuit Demystified

Electrical Diagrams · made in Skemio

Greinacher voltage doubler circuit diagram with an AC source feeding an input capacitor and clamping diode rung, and a rectifying diode and reservoir capacitor rung.
Greinacher voltage doubler circuit diagram with an AC source feeding an input capacitor and clamping diode rung, and a rectifying diode and reservoir capacitor rung.
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What it shows

  • Negative half-cycles clamp and charge C1 to peak input voltage.
  • Positive half-cycles boost line voltage on top of C1 charge.
  • Rectified output yields roughly double the peak input AC voltage.

The takeaway

Cascaded diode-capacitor stages clamp and pump AC waveforms into double the DC output potential.

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