Patent ID: 6759936
Filing Date: 2004-07-06
Classification: H01F,Y10T

Abstract:
A transformer comprising:a metal core; and a plurality of coil modules, wherein each coil module comprises: at least one conductive wire wherein a portion of said conductive wire is wound into coils of a predetermined loop number, said loop number is selected from a predetermined set, and said coils define a coil opening; and an insulating encapsulator comprising plastic material for encapsulating said coils, said insulating encapsulator defines an core opening, and an outline of said core opening is within said coil opening, wherein said plurality of coil modules are arranged as a stack, the outline of said core opening of each coil module surrounds said metal core, and said coils of two adjacent coil modules are separated by said insulating encapsulators of the two adjacent coil modules, and wherein a number of said coil modules is used to function as primary coils of said transformer and another number of said coil modules is used to function as secondary coils of said transformer.