Anti-interference magnetic ring magnetic pass, also said absorption magnetic ring, and said ferrite magnetic ring, also said anti-interference core, also said magnetic ring magnetic pass, is ferrite magnetic ring series in the of a. and General ferrite of maximum difference is it has is big of loss, with this clip buckle type magnetic ring making of inductance, its characteristics more close resistance. it is a resistance value with frequency increased and increased of resistance, dang high frequency signal through ferrite Shi, electromagnetic energy to hot of form dissipation off.