| 摘要 |
PROBLEM TO BE SOLVED: To miniaturize a reactor by suppressing a temperature increase, and further to reduce noise. SOLUTION: An O-type core 10 has at least one recess 16 retreating in reference to the center of a through-hole 12 on an annular inner wall 14 for showing the through-hole 12, and an edge 22 of an I-type core 20 arranged inside the through-hole 12 is fitted to the recess 16. The I-type core 20 is formed by a material having a grade higher than that of the O-type core 10. More specifically, the O-type core 10 is formed by a non-orientation material and the I-type core 20 is formed by an orientation material, or the silicon content of the I-type core 20 is made larger than that of the O-type core 10 for formation. Further, a buffer member 40 formed by a resin, or the like is arranged between the edge 22 of the I-type core 20 and the recess 16. COPYRIGHT: (C)2009,JPO&INPIT
|
