The principles and use of common code inductance
Common mode inductance consisted of ferrite core is a common mode interference inhibitor. It is symmetrically wound on a ferrite T-core by same two coils in dimensions and turns in the form of a four-terminal component, which has a great inhibition to common mode inductance presented by common mode signals but merely doesn´t work to small leakage inductance. What the principle is that magnetic flux in cores mutually piles up when current flows into common mode resulting in a deal amount of inductance as a inhibition to common mode current, opposite, when two coils flows into differential mode the magnetic flux in cores mutually counteracts and hardly inductance exists, that´s why differential mode current can across it without reduction. So common mode inductance can efficiently restrain common mode from interfering and does not exert its influence on differential mode in normally transmission./upfile/file/20180529/2018052910093118377.docx
