DIMMING BALLAST AND RELATED METHOD ALLOWING INDIVIDUAL CONTROL OF MULTIPLE LAMPS
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United States of America Patent
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N/A
Issued Date -
Apr 4, 2013
app pub date -
Sep 29, 2011
filing date -
Sep 29, 2011
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A dimming ballast allowing individual control of multiple lamps is described. The ballast includes a lamp driver to control at least one lamp. Further, the ballast includes a current sensing module , connected as part of a feedback loop from the at least one lamp to the lamp driver, the current sensing module being configured with a maximum allowable output current value for each lamp. A lamp resonant circuit, connected between the lamp driver and the at least one lamp, operates over the entire range of the output current values. A lamp status module is coupled to the lamp driver for monitoring at least one condition related to the at least one lamp being controlled. Moreover, a control module controls the lamp driver independently based on a feedback loop from the lamp status module. Various embodiments of the dimming ballast along with related methods are also described.
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