Boosted D.C. supply circuit and luminaire employing same

Electric lamp and discharge devices: systems – Discharge device and/or rectifier in the supply circuit – Flashers

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313579, 315 91, H05B 3700

Patent

active

047527196

ABSTRACT:
A luminaire using a tungsten-halogen lamp, includes a circuit for supplying the lamp with a boosted D.C. operating voltage. The circuit includes a full-wave rectifying circuit for receiving a standard A.C. mains supply voltage, and a low pass filter connected to the output of the rectifier. The value of the time constant of the filter is chosen to produce at the rectifier output, an average D.C. voltage of about between 135 and 146 volts, preferably about 140 volts.

REFERENCES:
patent: 3459995 (1969-09-01), Rea
patent: 4001637 (1977-01-01), Gray
patent: 4078188 (1978-03-01), Martin et al.
patent: 4149086 (1979-04-01), Nath
Advertisement for "Mellin Lite-Savers", in the Selective Shopper, (undated).
American Cinematographer, Jun. 1963, p. 205.
"Price List-Commercial and Industrial Motion Picture and Television Lighting Equipment (Boosted)", by ColorTran Industries.
Lighting Handbood, 7th Edition, by Sylvannia Lighting Center, GTE Products Corp., 1984.
"Sylvannia Incandescent Lamp Rule", GTE Products Corp., Sylvannia Lighting Center.
Brochures by J. G. McAlister Inc., featuring "The Work Horse" converter, and The Executive Converter.

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