| 摘要 |
PURPOSE:To reduce the size of a step-up coil and to facilitate the coil on a substrate or the like by insulating and separating a magnetic core at least longitudinally into more than two sections. CONSTITUTION:Projections 9, 10 are formed at the lower yokes of soft magnetic metal members 7, 8 bent in ?-shaped and forming a core and upper and lower yokes, a step-up coil is secured to a circuit board via the projections 9, 10, and is electrically conducted. The members 7, 8 are insulated via an insulating plate 11. A coil 12 is wound directly on the cores of the members 7, 8. Soft magnetic coil members 13, 14 are bonded fixedly between the upper and lower yokes of the members 7, 8, and the members 13, 14 are formed in half ring shape. |
