Common Mode Choke Measurement

FT114-43 Ferrite Toroid Core

Self resonance apparent capacitance is set to 1.22 pF. Visit Solenoid self-resonance measurements for additional information.

Source code and data files Balun-Imp-source.zip

Using equations from A method for estimating the impedance of a ferrite cored toroidal inductor at RF

Equation confirmed using the Zcm-43.xls link in Common mode choke design tool

Fair-Rite permeability tables can be found here. Look for the links "PERMEABILITY (CSV)."