Claims
- 1. A method of fabricating a core for a transformer, comprising the steps of:laminating core members each in a shape of a thin strip and forming thereof in a ring-like shape; and applying a direct current magnetic field in a direction intersecting with a direction along a magnetic current of the transformer to the formed core members in annealing to thereby form an axis of easy magnetization of the core in the direction of the magnetic field.
- 2. The method of fabricating a core for a transformer according to claim 1,wherein the direct current magnetic field is applied in a direction substantially orthogonal to the direction along the magnetic circuit of the transformer.
- 3. A method or fabricating a core for a transformer, comprising the steps of:laminating core members each in a shape of a thin strip and forming thereof in a ring-like shape; and applying a direct current magnetic field in a first direction along a magnetic circuit of a transformer and a direct current magnetic field in a accord direction intersecting with the first direction to the formed core members in annealing thereof to thereby form an axis of easy magnetization of the core in a direction of a magnetic field synthesized with the two direct current magnetic fields.
- 4. A method of fabricating a core for a transformer, comprising the steps of:subjecting core parts to material taking from a magnetic material having an axis of easy magnetization substantially in a constant direction such that the axis of easy magnetization is directed in a direction intersecting with a direction along a magnetic circuit of the transformer; and laminating the core members.
Priority Claims (1)
Number |
Date |
Country |
Kind |
2001-018226 |
Jan 2001 |
JP |
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CROSS-REFERENCE TO RELATED APPLICATION
This application is a divisional of Application Ser. No. 09/908,717 filed Jul. 20, 2001, now U.S. Pat. No. 6,611,191, the subject matter of which is incorporated herein by reference.
US Referenced Citations (5)
Foreign Referenced Citations (1)
Number |
Date |
Country |
08-222454 |
Aug 1996 |
JP |