Electric lamp and discharge devices: systems – Current and/or voltage regulation – Automatic regulation
Reexamination Certificate
2011-05-31
2011-05-31
Patel, T C (Department: 4134)
Electric lamp and discharge devices: systems
Current and/or voltage regulation
Automatic regulation
C315SDIG002, C315S094000, C315S2090SC
Reexamination Certificate
active
07952303
ABSTRACT:
An electronic ballast has control circuitry to operate a gas discharge lamp in both full and dimmed illumination modes. The electronic ballast also includes a full power circuit having a power control coupled to the dimming controller output to receive the dimming controller signal, a filament heating circuit having a heating input coupled to a reduced power circuit to receive a reduced power signal and a heating output that can couple to the filaments of one or more lamps. When the full power circuit receives the dimming controller signal, via the power control, and the dimming controller signal is not in the dimming request range (i.e. the full illumination mode has been selected), the full power circuit generates a full power signal capable of driving/operating the lamp(s) in the full illumination mode. When the reduced power signal is present, the filament heating circuit generates and provides a filament heating signal to the filaments, via the heating output.
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Radzinski Christopher
Xiong Wei
Patel T C
Patterson Mark J.
Universal Lighting Technologies, Inc.
Waddey & Patterson
Yang Amy
LandOfFree
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