Title:
HIGH-FREQUENCY SHEET TYPE TRANSFORMER
Document Type and Number:
Japanese Patent JP3147826
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To increase the power conversion efficiency, by arranging first and second faces in inverse winding order in a sheet type transformer for minimizing the eddy current.
SOLUTION: So-called EI cored transformer 10 is composed of an E type core 15 and an I type core 16. In this transformer 10 having a first faces 11 (A face) and a second faces 12 (B face), the first faces 11 are arrayed in the order of a, b, a, b from outside to inside, while the second faces 12 are arrayed in the inverse order of b, a, b, a from outside to inside. In such a constitution, the winding a on the first face to the winding a on the second face, likewise the winding b on the first face to the winding b on the second winding b, is electrically connected respectively through via holes. In this embodiment, two each parallel windings of a and b are adopted, however, the parallel winding structure exceeding three each may be adopted.
Inventors:
Fumiaki Nakao
Satoshi Ohta
Shinji Watanabe
Tetsuya Suzuki
Mikio Kitaoka
Satoshi Ohta
Shinji Watanabe
Tetsuya Suzuki
Mikio Kitaoka
Application Number:
JP22324697A
Publication Date:
March 19, 2001
Filing Date:
August 20, 1997
Export Citation:
Assignee:
FDK Co., Ltd.
International Classes:
H01F17/00; H01F19/00; H01F19/04; H01F27/28; H01F30/00; (IPC1-7): H01F19/00; H01F27/28; H01F30/00
Domestic Patent References:
| JP51112019U | ||||
| JP69121U |
Attorney, Agent or Firm:
Yukio Omata