Patent ID: 7880576
Filing Date: 2011-02-01
Classification: H01F,H05K,Y10S,Y10T

Abstract:
1. An electromagnetic noise absorber to be attached around an electric cable to attenuate noise transmitted through the electric cable, the electromagnetic noise absorber comprising: a strip-like base material; and a plurality of ferrite pieces fixed to the strip-like base material, wherein the plurality of ferrite pieces are formed by fixing a sheeted ferrite sintered body to the strip-like base material and subsequently splitting the sheeted ferrite sintered body along split lines oblique with respect to a longitudinal direction of the strip-like base material, and the plurality of ferrite pieces are also split along split lines extending parallel to the longitudinal direction of the strip-like base material; and the electromagnetic noise absorber is wound around a circumference of the electric cable such that the split lines, which extend obliquely with respect to the longitudinal direction of the strip-like base material, are parallel to an axial direction of the electric cable, thereby being attached in a spiral manner around the circumference of the electric cable.