Magnetic core and method of manufacturing the same
AssigneeMatsushita Electric Industrial Co., Ltd.
InventorsNobuya Matsutani, Yuji Mido
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Abstract
A magnetic core of a compressed compact comprises a mixture of magnetic powder and a spacing material, wherein the distance between adjacent magnetic powder particles is controlled by the spacing material. In this constitution, a magnetic core low in core loss, high in magnetic permeability, and excellent in direct-current superposing characteristic is realized.
Claims6
A magnetic core comprising a mixture of magnetic powder and a spacing material, wherein the distance between adjacent particles of said magnetic powder is controlled by said spacing material and wherein the distance between adjacent magnetic particles is represented by δ and the mean particle size of magnetic powder is represented by d, and the relationship of 10−3≦δ/d≦10−1 is satisfied in 70% or more of the magnetic powder, said magnetic powder comprising a soft magnetic material.
Dependencies are inferred from the claim text.