THIN CHOKE COIL

PURPOSE: To increase the allowable current value of a thin chalk coil by a method wherein with inner side and outer side coils mounted to a core, both terminals of each of the inner side and outer side coils are connected in parallel to each other in the outside of this core. CONSTITUTION: A thin EE-type core is formed of an upper side E-type core 3 and a lower side E-type core 4, which are ferrite cores. An inner side coil 1 and an outer side coil 2 are respectively mounted to so-called window parts around round center legs 3c and 4c. The coils 1 and 2 are formed by double-strip winding of flat type copper wires, which have a thickness equal to each other, and respectively have insulating films on their surfaces, vertically on roughly the same plane. Insulating films on both terminals of each of the coils 1 and 2 are peeled from the terminals in the outside of this EE-type core to connect the terminals in parallel to each other on a pattern of a printed board. Moreover, the impedances of the coils 1 and 2 are set so as to become equal to each other.