| 摘要 |
To reduce a reactor core shape so as to decrease an entire reactor size and to lower a cost while improving DC superimposition of a high current value. In a reactor core (108), cross-sectional area W1a*Ha of two magnetic substance blocks (109a) making up a non-winding portion while no winding is wound are reduced by about 24% to 33% as compared to cross-sectional area Wb*Hb* in the direction orthogonal to magnetic paths of magnetic substance blocks (3b) making up a winding portion.
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