REACTOR, REACTOR CORE AND ITS MANUFACTURING METHOD

摘要

PROBLEM TO BE SOLVED: To provide a reactor corresponding to large electric power and a high ripple current low in loss, low in noise and small in size. SOLUTION: The reactor mounts on a coil a reactor core combining at least two or more dust moldings containing an insulating material. The saturated magnetization of the reactor core is 1.7 T or larger when a magnetic field of 5 kA/m is applied, first apparent magnetic permeability (μ5k) is 25 or larger, and second apparent magnetic permeability (μ35k) is 70 % or larger of the first apparent magnetic permeability (μ5k) when a magnetic field of 35 kA/m is applied. When an alternating current of 10 kHz is made to flow to the coil in a state that the coil is mounted on the reactor core, alternating current resistance (r1) on mounting is 2.5 times or less (r≤2.5r0) of an alternating resistant value (r0) in a single body when the alternating current is made to flow to the coil single body. COPYRIGHT: (C)2005,JPO&NCIPI