Skip to content

ohmpal
ToolsCapacitive voltage divider
Simulator
English

Capacitive voltage divider

AC sinusoidal RMS values; output across C2.

CalculatorHow to useFrequently asked questions

Loading the calculator…

AC sinusoidal RMS values; output across C2. Blank load means no load; a resistor changes the ratio. This circuit provides no galvanic isolation and does not regulate DC.

How to use

  1. Enter the dimensions and electrical values.
  2. Adjust the assumptions to match your components.
  3. Read the result and check the technical limits below.

Formula and assumptions

V₂/Vin = C₁/(C₁ + C₂); X_C = 1/(2πfC); Z₂ = (−jX₂) ∥ R_load; V₂ = Vin × Z₂/(−jX₁ + Z₂).

Calculated example

Input voltage
12 V RMS
Frequency
1 kHz
C1
0.1 µF
C2
0.1 µF
Output voltage
6 V RMS

Technical references

Frequently asked questions

How is this calculated?

AC sinusoidal RMS values; output across C2. Blank load means no load; a resistor changes the ratio. This circuit provides no galvanic isolation and does not regulate DC.

Related tools