| 摘要 |
PROBLEM TO BE SOLVED: To provide a winding coil for which the aimed inductance value can be easily achieved and which has very little variation in inductance, and to provide its winding method. SOLUTION: The winding coil 1 comprises a core 2, an electrode 3, a winding 4, and a coating resin 7. Specifically, the winding 4 wound around a winding core 5 comprises a closely wound portion 4A and a coarsely wound portion 4B with the number of turns of the three-turn coarsely wound portion 4B and that of the eight-turn closely wound portion 4A. Preferably, the number of turns of the coarsely wound portion 4B is set to two-or three-turn, and the number of turns of the closely wound portion 4A is 40 to 94% of the entire winding 4. COPYRIGHT: (C)2007,JPO&INPIT
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