Hello,
I'm studying a SPICE model for commonmode chokes where windings are represented with frequency dependent voltage sources, as in the picture below
K and L parameters are fitted by measurement, while parallel capacitance is a fixed value.
I think it's a good way to simulated how magnetic permeability of a core varies with frequency, but I have some issue in setting the proper schematic to extract impedance curve.
What should I do? I'm used to define an external 1 V source (with 50 ohm series resistance) and a resistive 50 ohm load. Is it correct? I attached the corresponding LTspice file.
Thank you for your help.
I'm studying a SPICE model for commonmode chokes where windings are represented with frequency dependent voltage sources, as in the picture below
K and L parameters are fitted by measurement, while parallel capacitance is a fixed value.
I think it's a good way to simulated how magnetic permeability of a core varies with frequency, but I have some issue in setting the proper schematic to extract impedance curve.
What should I do? I'm used to define an external 1 V source (with 50 ohm series resistance) and a resistive 50 ohm load. Is it correct? I attached the corresponding LTspice file.
Thank you for your help.
Attachments

2.5 KB Views: 3