There are different solutions for calculating a PI-filter. Here one with 2 Boucherot-circuits. First we transformate to a low help resistance, then we transformate to the destination resistance. By changing the help resistance it is possible to adjust Ca, Cb or L. Maybe the automatic search works for a chosen Ca, Cb or L. First calculate the Pi-filter manually, then choose a value close to the value shown. Automatic search is a beta program version. More information [here]

Collins-filter calculator | |
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Collins-filter calculator | |
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