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Electrostatic discharge protection for luminaire

  • US 8,610,358 B2
  • Filed: 08/17/2011
  • Issued: 12/17/2013
  • Est. Priority Date: 08/17/2011
  • Status: Active Grant
First Claim
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1. A lighting system, comprising:

  • at least one light emitting diode;

    a power supply coupled to the at least one light emitting diode and operable to convert a received power signal into a feedback-regulated power signal that is provided to the at least one light emitting diode, the power supply, including;

    a rectifier;

    a transformer coupled to the rectifier and having a primary winding and a secondary winding;

    a switch operable to at least partially control current passing through the primary winding;

    an overvoltage protection device coupled between an output of the rectifier and the primary winding; and

    an overcurrent protection device coupled between the switch and a common voltage reference that is common to the rectifier and the primary winding,the overcurrent protection device being operable to conduct an induced current from a ground reference node to the primary winding of the transformer; and

    a feedback circuit coupled between the at least one light emitting diode and the switch and operable to vary a magnitude of the feedback-regulated power signal.

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