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THE FEUTEX TOOLKIT

Capacitor Ripple Heating

Separate ripple voltage and ESR dissipation for sinusoidal ripple current.

Electronics workspace● Runs in your browser
01 Your input
02 Your result
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FormulaP=Irms² ESR; Vrms=Irms |ESR−j/(ωC)|
Sources and model references

Worked example

Inputs

Ripple RMS current
2 A
ESR at ripple frequency
0.05 ohm
Ripple frequency
100000 Hz
Capacitance
0.0001 F

Expected results

ESR dissipation
0.2 W
Total ripple RMS
0.1049438509 V

Load the example in the workspace to reproduce these results. Display rounding does not change the underlying calculation.

How to use this tool

  1. Enter the labeled inputs in the indicated units.
  2. Calculate and compare every output against the stated model assumptions.

Try this example

{
  "i": 2,
  "esr": 0.05,
  "f": 100000,
  "c": 0.0001
}

Accuracy and scope

Sinusoidal ripple, fixed ESR, negligible ESL; not a ripple-current rating check. Simplified analytical model; not a design recommendation or safety certification.

Is my data uploaded?

This tool runs locally in your browser. Input and output are not sent to a processing server. Copy or download your result before leaving the page.