Abstract: A method of assembling a coil includes forming a ferrite core having a top end, a bottom end, an inner opening extending from the top end to the bottom end, a cylindrical outer surface, and a step portion formed near the bottom end, the step portion extending past the outer surface. A first high dielectric material is applied on the outer surface of the ferrite core, then a conductive wire is wound onto the high dielectric material, whereafter a second high dielectric material is applied over the conductive wire.

Abstract: A coil assembly includes a cylindrical ferrite core having a top end, a bottom end, an inner opening extending from the top and to the bottom end, a cylindrical outer surface, and a stepped portion formed at the bottom end, where the stepped portion extends past the outer surface of the cylindrical core. A first high dielectric material is located over at least a substantial portion of the surface of the cylindrical core by use of a coating process. A length of conductive wire is wound around the first high dielectric material located over the outer surface of the cylindrical ferrite core. The winding of the wire around the core forms a coil having a first end and a second end. A second high dielectric material is then located over the coil, not including the first end and second ends. A coil holder is formed including a base portion having a base opening formed substantially at a centered area of the coiled holder.