| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a power supply device in which leakage of electromagnetic noise can be suppressed effectively.SOLUTION: A power supply device 1 includes a magnetic component 2 having a coil 21 formed annularly, a case body 3 consisting of a conductor having an open surface in the axial direction of the coil 21, a case lid consisting of a conductor having internal surface along the open surface, and a plurality of conduction parts 5 for electrically conducting the case body 3 and the case lid in the open surface, with a lower resistance than other parts. When viewed from the axial direction, the conduction parts 5 are arranged at the intersection where a straight line L that is 45°±15° for the perpendicular N, drawn on a side plate 32 closest to the center C of the coil 21 of at least one magnetic component 2, crosses the side plate 32 on which the perpendicular N is drawn.</p> |
