H - Electricity – 01 – F
Patent
H - Electricity
01
F
26/119, 336/6
H01F 41/06 (2006.01) H01F 41/04 (2006.01) H01F 41/10 (2006.01)
Patent
CA 1210099
BOBBIN CONSTRUCTION FOR AUTOTRANSFORMER BALLAST Abstract of the Disclosure A method of fabricating an autotransformer ballast and the unique ballast resulting therefrom are disclosed; the method comprising forming a single bobbin for accommo- dating 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.
413474
Borden Ladner Gervais Llp
General Signal Corporation
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