Method and apparatus for retrofitting HID lamps with system to periodically adjust operating wattage
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United States of America Patent
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Apr 10, 2012
Grant Date -
Feb 3, 2011
app pub date -
Oct 15, 2010
filing date -
Feb 24, 2004
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A method, apparatus, and system for increasing usable light from a high intensity lighting fixture to a target area without an increase in energy use. In one aspect, the circuit is retrofitted into an existing lamp circuit that allows selective change in operating power or wattage to the lamp, over a substantial period of operation time, to save energy. In one aspect operating wattage of the lamp would be reduced. In another aspect of the invention, reduction in operating wattage is accomplished by a switchable capacitance in electrical communication with the lamp circuit.
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