Using ferrite core line noise suppressors is an effective way to reduce the noise on power lines. Ferrites are magnetic materials that can be pressed into various shapes. They are used in the construction of EMI suppressors and common mode choke coils. Ferrites come in several forms, including ring-

Ferrite core & common mode choke Common mode choke for noise reduction in power switch working from frequency 1khz-50mhz, it is essentially a bidirectional filter: on the one hand, it filters out the common mode electromagnetic interference on the signal line; on the other hand, it restrains the el