Common mode choke cores using the new Fe-based alloys composed of ultrafine grain structure

Abstract
Common mode choke cores using the new Fe‐based alloys called ‘‘FINEMET’’ composed of ultrafine grain structure were developed. These new cores show high attenuation to high‐voltage pulse noises and good attenuation characteristics over a wide frequency range. Accordingly, the new cores are expected to be applied in many applications as line filters for electronic devices.

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