Common Mode Choke, also known as common mode inductor, is wound symmetrically on a closed magnetic ring with the same turns in opposite directions. It is often used to filter common-mode electromagnetic interference, suppress the electromagnetic wave produced by high-speed signal lines to emit radiation, and improve the EMC of the system. In practical application, common mode inductance is generally added to the differential signal line.

Common-mode choke: In the common filter, usually only one common-mode choke is installed, and the leakage inductance of the common mode choke is used to generate an appropriate amount of differential mode inductance,

Good gas performance, low partial discharge value: in the transformer insulation structure, how many local insulation weaknesses, it will first occur under the action of the electric field discharge, but not immediately the formation of the entire insulation penetration breakdown, it may occur on the surface of the insulator or internal, that is, partial discharge.