Ana iya amfani da coils-core coils a matsayin masu canji na yanzu, tare da faffadan mitar mitar, ƙaramin girman, nauyi mai sauƙi, dacewa don auna dijital, da kariya ta microcomputer. Ana amfani dashi sosai a fasahar talabijin, fasahar sauti, watsa sadarwa, liyafar da tace wutar lantarki, shugaban rediyon VCD, amplifier eriya, rikodin kaset na rediyo, makirufo eriya da sauran fagage.