PROBLEM TO BE SOLVED: To wind turns through a plurality of cores correctly and easily without using a Litz wire.;SOLUTION: A transformer 200 includes: a secondary winding including a plurality of coaxial arrangement toroidal closed magnetic circuits connected in series in an enclosure; and a primary winding having a plurality of turns including conductive members 301 to 306 penetrating through the toroidal closed magnetic circuit in the axial direction. Each one of a plurality of conductive members is connected to each of conductive strip line means 321 to 326 proceeding along a wall of an enclosure means by electric connections 311 to 316, 331 to 336 of side plates facing to each other and continuous primary winding is formed.;COPYRIGHT: (C)2015,JPO&INPIT
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