LED bypass and control circuit for fault tolerant LED systems

The invention discloses an LED bypass and a control circuit for fault tolerant LED systems, that is, a light system. The light system includes a plurality of series connected light emitting diodes (240-246). Each of a plurality of switching devices (230-236) has a control terminal and each has a cur...

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Bibliographic Details
Main Authors PATTERSON JAMES, BERNS WERNER, GOELTNER CHRISTOPH, DENICHOLAS JOSEPH V, TSAO PERRY, MASSON JAMES, HERRINGTON DANIEL ROSS
Format Patent
LanguageChinese
English
Published 04.12.2013
Subjects
ELECTRIC HEATING
ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
ELECTRICITY
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Summary:The invention discloses an LED bypass and a control circuit for fault tolerant LED systems, that is, a light system. The light system includes a plurality of series connected light emitting diodes (240-246). Each of a plurality of switching devices (230-236) has a control terminal and each has a current path coupled in parallel with a respective LED. A plurality of fault detector circuits (220-226) are each coupled in parallel with a respective light emitting diode. Each fault detector circuit has a first comparator (FIG. 7, 704) arranged to compare a voltage across the respective light emitting diode to a respective first reference voltage (708). When a fault is defected, a control signal is applied to the control terminal to turn on a respective switching device of the plurality of switching devices.
Bibliography:Application Number: CN201310191505