Process for the manufacture of a toroidal ballast choke

Details Process for the manufacture of a toroidal ballast choke Process for the manufacture of a toroidal ballast choke

1987-09-21

1988-11-08

Hall, Carl E.

Metal working

Method of mechanical manufacture

Electrical device making

336212, 336229, H01F 4108

Patent

active

047825820

ABSTRACT:
A process for the manufacture of a generally toroidal or annular choke, in which a magnetic core is provided with an insulative layer, e.g., by an injection or other molding process, and divided into two parts. Each of the parts is then provided with a respective winding. The two chokes thus made can be electrically connected in series and mechanically joined to form a choke having the shape of the original core. Preferably, the original core is annular and each of the pieces is roughly semi-annular.

REFERENCES:
patent: 1832290 (1931-11-01), Fischer
patent: 1889398 (1932-11-01), Bishop
patent: 3448421 (1969-06-01), Berg et al.

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