... :Transformers and chokes for switching power supplies, filter, inductor etc. UF CORE Applications:Mainly used for line filters in color TV ... .Antenna ferrite cores,soft ferrite cores,magnetic cores, u ferrite cores, ferrite pot 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