System for promoting passive end of life light source failure
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United States of America Patent
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Jun 12, 2001
Grant Date -
N/A
app pub date -
May 20, 1999
filing date -
May 20, 1999
priority date (Note) -
Expired
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Abstract
A system for promoting passive end of life light source failure in response to thermal cycling of the light source includes an automatic relay in communication with a ballast or groups thereof for interrupting power to the associated light sources. Alternatively, the relay may be configured to short out the light source directly. The automatic relays are configured to turn off associated light sources at predetermined or random times for predetermined or random durations.
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