Title:
THERMALLY-PROTECTED BALLAST FOR HIGH-INTENSITY-DISCHARGE LAMPS
Document Type and Number:
WIPO Patent Application WO2004016050
Kind Code:
B1
Abstract:
A ballast (100) for electrical lighting fixtures with improved thermal protection features. The ballast has ballast laminations (16), primary (18) and secondary (20) coils, and a thermal protector (12), the thermal protector being wired in series with the secondary coil. When the ballast is of the type having multiple input voltage taps on the primary coil; the electrical positioning of the thermal protector in series with the secondary coil causes the wiring assembly of the thermal protector (as part of the ballast) to be independent of the primary coil input voltage tap used in a particular application. Improved electrical lighting circuits for high-intensity-discharge lamps may be obtained, the circuits having the above-described thermally-protected ballasts.
Inventors:
SOKOLY THEODORE O (US)
GUILLIEN WAYNE P (US)
GUILLIEN WAYNE P (US)
Application Number:
PCT/US2003/024926
Publication Date:
May 06, 2004
Filing Date:
August 07, 2003
Export Citation:
Assignee:
RUUD LIGHTING INC (US)
SOKOLY THEODORE O (US)
GUILLIEN WAYNE P (US)
SOKOLY THEODORE O (US)
GUILLIEN WAYNE P (US)
International Classes:
H05B41/18; (IPC1-7): H05B37/00
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