Miniature inductor and method of manufacturing same

Details Miniature inductor and method of manufacturing same Miniature inductor and method of manufacturing same

1987-08-24

1988-04-12

Hall, Carl E.

Metal working

Method of mechanical manufacture

Electrical device making

29418, 29606, 336 96, 336136, H01F 702

Patent

active

047365137

ABSTRACT:
A miniature variable inductor comprises a coil soldered to a pair of connecting skids. These skids are clipped to two oppositely disposed lateral walls of an injection-molded plastics cover in the shape of a hollow die. A solid part of the cover and a hollow space lie between these two walls. A central opening through these walls, the solid part of the cover and the hollow space defines a housing for a movable ferromagnetic core. There is a screwthread on at least part of this core. The coil is disposed in the aforementioned hollow space coaxially with the central opening, encapsulated in resin. The central opening has a threaded portion where it passes through the solid part of the cover. This threaded portion is complementary to the thread on the core.

REFERENCES:
patent: 4425702 (1984-01-01), Murakami et al.

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