| 摘要 |
PROBLEM TO BE SOLVED: To provide a ferrite core having a gap dimension of high precision with high productivity. SOLUTION: A ferrite core 1 has an inner leg 3, an outer leg 2 arranged to surround three of four sides around the inner leg, and a connection part for connecting the inner leg with the outer leg. This ferrite core is a ferrite core having a gap, in which a matching surface of each of the legs is formed in an arc shape, and the difference between the uppermost part and the lowermost part of the leg is not smaller than 1μm.
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