Common Mode Inductors for Switching Power Supplies 

Common Mode Inductors for Switching Power Supplies Common mode inductors, also called common mode chokes, are commonly used in switching power supplies for computers to filter common mode electromagnetic interference signals. In board design, common mode inductors also play a role in EMI filtering and are used to suppress electromagnetic waves generated by high-speed signal lines from radiating outward. Common mode inductor a ferrite core common mode interference suppression device, it is composed of two coils of the same size and the same number of turns symmetrically wound on the same ferrite toroidal core, forming a four-terminal device, common mode inductor plays a role in impeding the AC current. For plug-in inductors, we generally see more of the UU type and EE type and ring type, etc.