Electric lamp and discharge devices: systems – Combined load device or load device temperature modifying... – Plural circuit elements
Reexamination Certificate
2007-10-31
2010-11-09
Tran, Thuy Vinh (Department: 2821)
Electric lamp and discharge devices: systems
Combined load device or load device temperature modifying...
Plural circuit elements
C315S308000
Reexamination Certificate
active
07830093
ABSTRACT:
A method for assembling a lamp fixture incorporates a ballast and a compact gas discharge lamp into the fixture. A comparator circuit, clamp circuit, and control circuit are assembled into the ballast such that the comparator circuit compares a measured value of a lamp parameter to a threshold value and provides a signal indicative of the comparison; the clamp circuit receives the clamp signal and provides a clamp signal in accordance therewith; and the control circuit, in accordance with the clamp signal, controls the lamp such that the light level of the lamp can be lowered without perceptible flicker.
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Lutron Electronics Co. Inc.
Tran Thuy Vinh
Woodcock & Washburn LLP
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