Magnetic core and noise filter
AssigneeRiken
InventorDaisuke ISHIHARA
Life of this patent
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Abstract
A magnetic core (1) includes a plurality of magnetic laminated pieces (2). Each magnetic laminated piece (2) is formed by stacking a plurality of soft magnetic thin strip members (3) with a bonding portion (4) therebetween. Each magnetic laminated piece (2) includes two longitudinal laminate end faces (5) that form a discontinuous portion (C) and a curved portion (6) that is connected to each of the two longitudinal laminate end faces (5) and is curved in the lamination direction. The magnetic laminated pieces (2) are combined by being abutted against each other in a transverse direction so that the discontinuous portions (C) of adjacent magnetic laminated pieces (2) do not overlap.
Claims19
A magnetic core comprising a plurality of magnetic laminated pieces and formed by combining the plurality of magnetic laminated pieces, wherein
- each magnetic laminated piece is formed by stacking a plurality of soft magnetic thin strip members with a bonding portion therebetween,
- each magnetic laminated piece comprises two longitudinal laminate end faces that form a discontinuous portion, and a curved portion that is connected to each of the two longitudinal laminate end faces and is curved in a lamination direction,
- the plurality of magnetic laminated pieces is combined by being abutted against each other in a transverse direction so that the discontinuous portions of adjacent magnetic laminated pieces do not overlap, and
- an impedance ratio permeability at 25° C. and 100 kHz is 2000 or more.
(canceled)
Dependencies are inferred from the claim text.