| 摘要 |
In a disc-type coil that enables assuring a sufficiently high value of a flowing current to increase an output and comprises: a discoid insulating substrate 1; a conductor pattern 2 that is provided on each of both surfaces of the insulating substrate 1 so that through hole lands 22 and 23 are position on the outer circumferential side and the inner circumferential side of the insulating substrate 1, and that is arranged to be alternately folded back on both the surfaces of the insulating substrate 1; and through holes that are formed in the insulating substrate 1 and connect the through hole lands 22 and 23 of the conductor pattern 2, the plurality of through holes 6 are aligned and arranged in a radial direction c in each through hole land 23 on the inner circumferential side.
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