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Commonly used in computer switching power supply filter common mode EMI signal. In the board design, the common mode inductance is also the role of the EMI filter, used to inhibit the production of high-speed signal lines of electromagnetic radiation emitted outward
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With excellent linearity, wide working range, perfect consistency.With excellent transient characteristics, real waveform transfer, and can bear 20~40 times instantaneous impact from rated current and still be unsaturated.Suppressing dc component: when dc component contained in the input energizing quantity is no more than 50% of the input ac component，the ac component can pass the converter normally, and waveform distortion will not occur .
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The EMC standard of frequency range of 150KHz-30MHz on restraining the conducted CM EMI are becoming more serious in the application. CM inductance & filter capacitor were used to restrain the CM EMI. Ferrite core or common Nanocrystalline core are popular in domestic market as common mode choke cores, but high high-frequency volume and impedance reduction from 150KHz to 30MHz due to the operating frequency limitation makes these cores unworkable. In this case , we developed advanced higher property Nano-crystalline common mode choke cores as solution for EMC common mode choke cores requirement, and were applied to the EMC of switch power modules, UPS power supply, communication power supply, inverter, transducer, home appliance.
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