Common mode choke, also known as common mode choke, is often used in computer switching power supply to filter common mode electromagnetic interference signals. In the design of the circuit board, the common mode inductor also plays the role of EMI filter, which is used to suppress the electromagnetic wave radiated by the high-speed signal line.
How do I choose a common mode choke for my power supply?
Common mode choke
selection would largely depend on the EMI characteristics of your power supply. Normally, you would choose the inductance value based on the amount of EMI that you would like to attenuate.