| 摘要 |
PURPOSE:To attain ease of assembling and light weight and small size by equipping a printed board in which an open part of a U-shaped core outward and other circuit components are mounted on the lower part of a large current capacity inductance so as to eliminate magnetic saturation. CONSTITUTION:The U-shaped core 16 is used and the open parts are arranged outward mutually, then much leakage of magnetic flux phiu and phiv exist, no magnetic saturation is generated even if a large current flows, no reduction in the characteristic is produced and no effect due to leakage magnetic flux is given to other phase. Since a metallic fixture fixing the core 16 is not required and no gap adjustment commanding largely the inductance value is required, the assembling man-hour is reduced remarkably. Moreover, the core 16 is placed horizontally and the printed board 24 mounted with circuit components is installed thereunder, then the space is utilized efficiently, the space factor is improved remarkably and considerable small size and light weight are realized. |
