FLUORESCENT LAMP DRIVE AND A PROTECTION CIRCUIT THEREIN
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United States of America Patent
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app pub date -
Mar 28, 2012
filing date -
Oct 2, 2009
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Abandoned
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Abstract
An LED lighting circuit mounted in a lighting device having LEDs as a light source, the circuit including:
- a light emitting unit that includes a plurality of LED circuits for supplying drive currents to a plurality of LEDs connected in series or parallel;a failure detection unit that detects whether each of the drive currents flowing through the plurality of LED circuits is equal to or larger than a predetermined fault current value for those LED circuits as a whole; anda failure alert unit that performs a predetermined alert operation if the failure alert unit detects that at least one of the drive currents is equal to or larger than the predetermined fault current value.
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