Method of making a bobbin construction for autotransformer balla

Details Method of making a bobbin construction for autotransformer balla Method of making a bobbin construction for autotransformer balla

1981-10-15

1983-12-13

Hall, Carl E.

Metal working

Method of mechanical manufacture

Electrical device making

336171, 336198, H01F 4106

Patent

active

044198140

ABSTRACT:
A method of fabricating an autotransformer ballast and the unique ballast resulting therefrom are disclosed; the method comprising forming a single bobbin for accommodating a main primary winding and a main secondary winding, each having a large number of turns, and additional, filament windings, each having a number of turns much smaller than the turns of said first and second main windings; the bobbin being defined by a tube adapted to accommodate a core, the tube being divided into sections along its longitudinal axis for receiving the respective windings; the method further comprising the steps of continuously forming the windings around the bobbin with wire of the same size for all of the said windings.

REFERENCES:
patent: 3979707 (1976-09-01), Prince, Jr.
patent: 4023262 (1977-05-01), Miknaitis
patent: 4183002 (1980-01-01), Haslau

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