| 摘要 |
PROBLEM TO BE SOLVED: To increase an effective permeability in total, by orientating a longitudinal axis direction of alloy powder of a pressurized powder axis core which is made of mixing powder of alloy powder which contains Fe-Si-Al as a main component and of binder by being pressurized and molded, to a direction of a magnetic route direction of the pressurized powder axis core. SOLUTION: A pressurized powder magnetic core 10 which is made of mixing powder of alloy powder, of which main component is Fe-Si-Al, of which shorter radius axis diameter is less than 50 μm, and of which aspect ratio is over 5, and of binder by being pressurized and molded, is oriented to longitudinal direction of the alloy powder to a magnetic route direction of a pressurized powder magnetic core 10. The pressurized power magnetic core 10 is a pot core type having a basal part 5 which is provided at a central core part 3, at an outer peripheral part 4 and at terminals of those and a longitudinal axis direction of the alloy powder is oriented to both terminal directions of the central core part 3 and the outer peripheral part 4 and at the direction of orienting to the outer part from the center of the basal part 5. Further, bobbin 21 which is equipped with any pressurized powder magnetic core 10, a recess 2 of the pressurized powder magnetic core 10, and a coil 22 which is wound around the bobbin 21, are provided. By the means a high effective permeability can be obtained. |
