| 摘要 |
PROBLEM TO BE SOLVED: To provide an electromagnetic induction apparatus capable of suppressing increase in the resistance value of a plurality of coils, disposed in a laminated state inside a core in high-frequency domain by the skin effect.SOLUTION: The electromagnetic induction apparatus 20 has a plurality of coils 21a, 21b, 22, 23 laminated to house, in a ring-shaped coil housing space 6 formed in a core 5. Concave-convex parts (22a, 22b, 23a, 23b) are formed on the surface of the coils 22, 23 from among the plurality of coils, and the coils 22, 23 are concave-convex plate like coils constituting a one-turn shape conductive plate. |
