Patent ID: 6480084
Filing Date: 2002-11-12
Classification: H01F

Abstract:
An inductance element, comprising:a coil comprising a winding formed by winding a coated wire, the winding having a number of turns (N) per 10 mm length of the winding, N being in the range of 20 to 500, the coil having a hollow portion whose both ends are opened; and a core comprising a single layer or a plurality of layers of a magnetic ribbon, the magnetic ribbon having a thickness in the range of 8 &mgr;m to 50 &mgr;m and a width in the range of 2 mm to 40 mm, and at least part of the single layer or the plurality of layers of the magnetic ribbon being disposed inside the hollow portion; wherein a ratio N/n is in the range of 20 to 500, where n is a number of layers of the magnetic ribbon.