| 摘要 |
<p>PROBLEM TO BE SOLVED: To reduce a winding cost and to improve output sensitivity by providing a core annularly formed by bending a coupling part of a core member obtained by coupling a plurality of yokes obtained by laminating magnetic materials in a band-like state, and a secondary winding wound on the yoke part of the core. SOLUTION: A first core member 11 is formed by arranging a plurality of yokes 10 via end faces 10c, 10d, a second core member 12 is formed by alternately arranging the respective yokes 10 with the member 11 in a lengthwise direction, and both the members 11, 12 are sequentially alternately laminated to form a core member 13. After the formed member 13 is inserted into an insulating bobbin 14, a secondary winding 17 is wound on a cylindrical part 15 of the bobbin 14. Then, the yokes 10 of one end side of the member 13 is bent, end edges are superposed to a rectangular shape to thereby form a core 18, thereby constituting a secondary winding.</p> |
