PURPOSE: To obtain a nonlinear choke coil having superior nonlinear characteristics and a temperature stability by a method wherein the nonlinear choke coil consists of a core formed by constituting integrally a nanocrystal high-magnetic permeability closed magnetic circuit core, a nanocrystal alloy core and a gapped core or a gapped dust core.
CONSTITUTION: A core for choke coil consists of a core formed by constituting integrally a nanocrystal high-magnetic permeability closed magnetic circuit core, a nanocrystal alloy core and a gapped core or a gapped dust core. The nanocrystal alloy core is an alloy core containing Fe as its main component and the composition of the core for choke coil is constituted in the compositional ratio of at least one kind of an element selected from between Cu and Cu to at least one kind of an element selected from among Ti, Zr, Hf, V, Nb, Ta, Mo, and W to Si to B = a content of 0.1at% or higher to 3at% of lower to a content of 1at% or higher to 7at% or lower to a content of 10at% or higher to 17at% or lower to a content of 4at% or higher to 10at% or lower and a nonlinear choke coil is formed by winding at least one conductor wire on this core.
BIZEN YOSHIO
ARAKAWA SHUNSUKE
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