| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a small, high efficiency power transformer and a highly reliable, small, high efficiency, low noise power converter comprising it. SOLUTION: In the power transformer comprising a core formed by winding a thin band of soft magnetic alloy, and a planar conductor winding, the core formed of thin band of soft magnetic alloy has a frame shape of no-cut closed magnetic path, and primary and secondary windings are formed by connecting substantally U-shaped planar conductors while laminating alternately. A required volume resulting from the winding is suppressed by setting the width of the substantally U-shaped planar conductor on the outside of the core smaller as compared with the width of the planar conductor passing through the inside of the core and similarly setting the width of the linear planar conductor connecting the substantally U-shaped planar conductors smaller as compared with the width of the substantally U-shaped planar conductor on the inside of the core.</p> |
