Hello , the structure shown below in the photo and video has common mode choke which creates common mode filter
and the leakage inductor is the diffirential mode filter.
inductor impeadnce is Z_L=jwl capacitor impedance Z_C=1/jwc."
How do I derive mathematickally the differential mode filter transfer function ?
How do I derive mathematickally the common mode filter transfer function ?

 

Simply write your input signal in the form of a combined common-mode/differential-mode form. If the circuit is linear, you can do the analysis for the two separately and then combine them, if needed, since linear circuits obey superposition.

v(t) = v_cm(t) + v_dm(t)

 

Hello WBahn,is there a similar mathenatical derivation I could follow and understand how things work?