Detecting circuit for open of LED array and LED driver apparatus using the same
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United States of America Patent
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Apr 25, 2017
Grant Date -
Jun 13, 2013
app pub date -
Dec 4, 2012
filing date -
Dec 7, 2011
priority date (Note) -
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Abstract
A detecting circuit and method thereof are configured to detect whether an LED array is open is described. The detecting circuit includes a resistance unit, a first switching unit, and an output unit. The resistance unit is operatively connected in series to the LED array. The switching unit is configured to be turned on when a voltage of the resistance unit is greater than or equal to a predetermined voltage level. The output unit is configured to produce an output indicative of whether the LED array is open, based whether the first switching unit is turned on.
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