Method of manufacturing an inductance element

Details Method of manufacturing an inductance element Method of manufacturing an inductance element

1987-08-11

1989-08-29

Hall, Carl E.

Metal working

Method of mechanical manufacture

Electrical device making

29840, 29850, 29860, 228110, 228176, 228179, 336192, 336200, 336208, H01F 706

Patent

active

048604330

ABSTRACT:
An inductance element comprises conductive paths of copper and a spool member arranged on a substrate, and insulated winding formed by a fine copper wire whose surface is coated with an insulating film of urethane etc. is wound around the spool member so that both end portions thereof are subjected to ultrasonic vibration by an ultrasonic bonding apparatus to be connected to the conductive paths by ultrasonic bonding. Thus, the end portions of the winding can be processed by local heating with application of ultrasonic vibration, whereby the coil needs not be entirely heated and an inductance element can be readily implemented directly on the substrate.

REFERENCES:
patent: 2923859 (1960-02-01), Worth et al.
patent: 3550645 (1970-12-01), Keogh
patent: 3555477 (1971-01-01), Hildebrandt
patent: 3590480 (1971-07-01), Johnson, Jr. et al.
patent: 3623649 (1971-11-01), Keisling
patent: 3673681 (1972-07-01), Steranko
patent: 4149135 (1979-04-01), Roespel et al.

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