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Power distribution for lighting systems

  • US 5,003,227 A
  • Filed: 12/18/1989
  • Issued: 03/26/1991
  • Est. Priority Date: 08/15/1988
  • Status: Expired due to Term
First Claim
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1. A lighting system comprising:

  • a suspended ceiling having a grid structure;

    an ordinary electric utility power line;

    central power supply connected with said power line and operative to provide an AC voltage at each one of a plurality of separate outputs, the frequency of said AC voltage being substantially higher than that of the voltage on said power line;

    a plurality of lighting units supported by said grid structure and located in an area proximate to said central power supply, each one of these lighting units being adapted to be properly powered from one of said separate outputs; and

    for each one of these lighting units, flexible connect cable operative to provide connection between this one lighting unit and one of said outputs;

    whereby each of these lighting units is provided with power directly from said central power supply by way of an individual connect cable, thereby distributing power from this central power supply to these lighting units in a hub-and-spoke manner;

    which, in turn, minimizes distribution losses.

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