Voltage Multiplier Calculator — Calculate Cockcroft-Walton Circuit Output

Voltage Multiplier Calculator

Calculate output voltage, ripple voltage, and component values for Cockcroft-Walton voltage multiplier circuits. Design high-voltage power supplies for electronic applications.

Step 1: Circuit Parameters

120 V
1,000 Hz
4

About Voltage Multipliers

Voltage multipliers use capacitors and diodes to generate higher DC voltages from lower AC inputs. Each stage roughly doubles the peak input voltage. Ripple increases with load current.

Step 2: Component Values

1 µF
0.7 V

Component Selection

Higher capacitance reduces ripple but increases physical size. Silicon diodes typically have 0.7V forward drop. Load resistance significantly affects output voltage regulation.

Voltage Multiplier Results

Summary
Stage Comparison
Breakdown

Theoretical Output Voltage

678 V
Peak DC output with no load
Peak Output Voltage
678 V
Ripple Voltage
12.3 V
Output Current
0.68 mA
Regulation (%)
98.2%

Stage Count Comparison

Stages Output Voltage Ripple Voltage Capacitors Needed

Performance vs. Load

Voltage Multiplier Formula

Vout = (Vpeak × 2 × N) – (Iload × N × (N+1) / (2 × f × C))

Where: N = number of stages, Vpeak = √2 × Vrms, f = frequency, C = capacitance, Iload = load current.

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