| 摘要 |
PROBLEM TO BE SOLVED: To provide a coil component which enough prevents the inductance value of a winding from lowering with DC superposed, realizes miniaturization, a low-loss property, saving of resources and saving of energy, and facilitates automatic manufacturing. SOLUTION: The toroidal core component is constituted such that a winding 21a is previously closely wound for a specified number of turns so that the winding width P1 is minimum to form an air-core coil, and this coil is mounted on a core 11 having a single gap 31 of a width W1 through the gap 31 and settled at the remotest position opposite away from the gap 31. The winding width P1 of the winding 21a is greatly reduced, compared with the winding width P of the conventional one.
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