# Collins-Filter

#### Collins-filter (Pi-Filter) resonance transformation

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
frequency in mcy
input power in Watt
source resistance in Ohm
load resistance in Ohm
help resistance in Ohm
inductivity in mH
Ca capacity in Farad
Cb capacity in Farad
peak capacitor voltage Ca in Volt
peak capacitor voltage Cb in Volt
rms inductivity current in Ampere
standard capacity for Ca

choosen capacity Ca in Farad

standard capacity for Cb

choosen capacity Cb in Farad

standard inductivity for L

choosen inductivity in Henry

search precision
regula falsi iterations
show graphic solution past calculation

above calculator with below one. below calculator with above one.

#### Collins-filter (Pi-Filter) resonance transformation

There are different solutions for calculating a PI-filter. Here the mathematically exact solution with the Q factor. Try a start value for Q between 5...20. Automatic search for Ca, Cb and L is a beta program version. More information [here]

Collins-filter calculator
frequency in mcy
input power in Watt
source resistance in Ohm
load resistance in Ohm
Q factor
bandwidth in Hz
inductivity in mH
Ca capacity in Farad
Cb capacity in Farad
peak capacitor voltage Ca in Volt
peak capacitor voltage Cb in Volt
rms inductivity current in Ampere
help resistance in Ohm
standard capacity for Ca

choosen capacity Ca in Farad

standard capacity for Cb

choosen capacity Cb in Farad

standard inductivity for L

choosen inductivity in Henry

search precision
regula falsi iterations
show graphic solution past calculation

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