Patent ID: 8946560
Filing Date: 2015-02-03
Classification: H01B,H01F,H05K,Y10T

Abstract:
1. An electric wire comprising: a central conductor made of aluminum or an aluminum alloy; a cover layer made of copper and covering the central conductor; and a ferromagnetic layer covering the cover layer and blocking an external magnetic field, wherein a thickness of the ferromagnetic layer is in a range from 0.04 μm to 14 μm, a total diameter of the central conductor and the cover layer is in a range from 0.05 mm to 0.4 mm, a cross-sectional area of the central conductor is in a range from 85% to 95% of a total cross-sectional area of the central conductor and the cover layer, relative magnetic permeability of the ferromagnetic layer is in a range from 5 to 10000, and a frequency used is in a range from 200 Hz to 30 MHz.