... used for line filters in color TV set. TOROIDAL CORE Applications:Pulse and wide-band transformers, various types ... of filters, inductors and chokes. U CORE Applications:Mainly used for flyback transformers in B/W ... 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 ...