Common mode choke is an important component in switching power supply, frequency inverter and ups. The choking High magnetic permeability Good frequency performance, initial permeability µ 0 can be adjusted according to insertion loss in different frequency ranges, which varies from 30000~100000 Very high initial permeability, an effective suppression of emi spike noise. Huge ranges of permeability adjustment Outstanding anti out-of balance current capacity Good temperature stability Paper ctn