Ballast with lamp sensor and method therefor
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United States of America Patent
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-
Aug 24, 2004
Grant Date -
Jun 26, 2003
app pub date -
Dec 17, 2001
filing date -
Dec 17, 2001
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A ballast circuit is provided having an input, an output for coupling to an electric discharge lamp and an oscillation circuit for illuminating the lamp. A circuit may be included for sensing when a voltage on an input to the oscillation circuit exceeds desired levels. The ballast circuit may be shut down, limited or otherwise controlled to reduce the possibility of ballast failure.
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