| 摘要 |
PROBLEM TO BE SOLVED: To constitute a small-sized noise filter which is small in the mount area of a capacitor by eliminating the trouble of winding a ring core with a coil and facilitating the formation of a thin type coil, to constitute a small coil which has its core formed of a magnetic body superior to a conventional one, and to constitute a small-sized noise filter mounted with a capacitor. SOLUTION: The thin coil is constituted by inserting conductors as many as the phases of a power source into parallel cylindrical cores, having hollow parts and connecting both-end sides of the conductors to the wiring pattern of a substrate, which abuts against both the ends of the cores and a large-sized capacitor with lead wires conforming with the shape of the core is arranged, in parallel with the cores to constitute the thin small-sized noise filter having the small-sized capacitor mounted on the wiring board. Furthermore, the small- sized noise filter is constituted by using cylindrical cores formed by winding the cylindrical cores with magnetic thin plates of amorphous superfine crystal alloy.
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