Paul A Mcbride

US Patent:

45917639, May 27, 1986

Filed:

Jul 14, 1983

Appl. No.:

6/513295

Inventors:

Michael J. Wanasz - Littleton CO
Stanley N. Harrison - Parker CO
Paul B. McBride - Lakewood CO

International Classification:

G05F 100
H05B 3702
H05B 3904
H05B 4136

US Classification:

315304

Abstract:

A power supply system for portable floodlighting equipment employing high-intensity electric discharge lamps comprises an alternating current generator having two independent armature windings, one for producing current at a standard voltage and the other for producing current at a voltage sufficiently high for starting a discharge lamp in series with a capacitor. The two windings are out of phase and interference with the operation of the lamps energized by the first winding and electric apparatus energized by the second is effectively eliminated. The use of the generator winding for starting and energizing the lamps eliminates the usual starting ballast and decreases the weight and cost of the portable floodlighting unit.