EC seres High Frequency Transformer EC series High Frequency TransformerEC type transformer is the basic type of ferrite cores, ... etc., with excellent material properties, for a typical transformer structure, EC core cylindrical center column, so that ... =100KHzg1EC-282834304258352EC-35354629100150783EC-404047321802901104EC-424247412403801255EC-494958536501000191. EC series High Frequency Transformer