| 摘要 |
An object of the invention is to reduce loss of a main winding by increasing the occupancy ratio of the area for accommodating the main winding conductor to the area for the entire conductors, and to attain a higher degree of flexibility in the number of turns of an auxiliary winding. The main winding has a patterned conductor (11a) formed by arranging a plate-like conductor into a flat-spiral shape. The patterned conductor (11a) is adjacent to another patterned conductor for the main winding via an insulating layer (10), and is connected thereto via a through-hole (29). The auxiliary winding has a patterned conductor (11b) for the auxiliary winding that is located on the same plane as the patterned conductor (11a). The patterned conductor (11b) includes a portion that is wound one or more turns on an inner side relative to the through-hole (29).
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