Patent ID: 9263181
Filing Date: 2016-02-16
CPC Classification: H01F

Claim Text:
1. A multi-phase transformer comprising: a plurality of coils; and a pair of magnetic members disposed at respective opposite ends of the plural coils in axial directions thereof, wherein each of the plural coils includes a plurality of sub-coils, and said plurality of sub-coils are formed by winding three of strip-like conductor members that are successively overlaid with an insulating material interposed between the conductor members such that a widthwise direction of each of the conductor members is aligned with an axial direction of the corresponding coil, and the first strip-like conductor member serves as a primary coil, and the second and third strip-like conductor members serve as a secondary coil, and the second and third strip-like conductor members are electrically connected to one another, and said plurality of sub-coils are disposed side by side such that respective axial directions of the sub-coils are parallel, and the pair of magnetic members functions as a part of a magnetic circuit for returning the magnetic flux generated by the primary coil and coupling the primary coil and the secondary coil to each other with mutual inductance, and said insulating material is disposed on an inner lateral surface of the conductor member, and the conductor member and the insulating material are wound together so as to be successively overlaid into a spiral shape.