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LIGHTING DEVICE

  • US 20140015423A1
  • Filed: 03/28/2012
  • Published: 01/16/2014
  • Est. Priority Date: 03/31/2011
  • Status: Active Grant
First Claim
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1. A lighting control device comprising:

  • a housing;

    a primary input power connection in the housing for receiving power from a primary power supply network;

    a secondary input power connection in the housing for receiving power from a secondary power supply;

    an output power connection in the housing for delivering power to one or more light sources; and

    electronic circuitry in the housing for controlling delivery of power from the primary and secondary input power connections to the output power connection to control delivery of power to the one or more light sources;

    wherein the electronic circuitry comprises;

    circuitry that determines an indication of an external electrical loading on a primary power supply network coupled, in use, with the primary input power connection; and

    circuitry that varies the power drawn from the primary and secondary input power connections in dependence upon the determined indication of the external electrical loading on the primary power supply network.

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