1. material: Mn-Zn 2. High permeability , ... line filters in color TV set. TOROIDAL CORE Applications:Pulse and wide-band transformers, ... of filters, inductors and chokes. U CORE Applications:Mainly used for flyback transformers in ... core, ferrite rod cores, soft ferrite core, high permeability ferrite cores, aetd ferrite core, n87 ferrite core, ef20 ferrite core, round ferrite core, L shape ferrite core ...