| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a multi-parallel magnetism-offsetting transformer and a power conversion circuit which are miniaturized and suppress a decrease in power conversion efficiency. <P>SOLUTION: The multi-parallel magnetism-offsetting transformer (transformer Tr1) includes a plurality of wound coils M that generate magnetic flux when supplied with current. The multi-parallel magnetism-offsetting transformer includes the coils M, and a core CO having a plurality of magnetic legs G on which the coils M are wound and a base B to which the magnetic legs G are fixed. The coils M are so wound on the magnetic legs G that the directions of magnetic flux generated by the coils M are reverse to each other. Hence the magnetic legs G and the base B jointly form a plurality of closed magnetic paths from magnetic flux, and the magnetic resistances of these closed magnetic paths are all equal. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
