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Self-powered modification kit for hid luminaire installations

  • US 6,393,608 B1
  • Filed: 11/16/2000
  • Issued: 05/28/2002
  • Est. Priority Date: 11/16/2000
  • Status: Expired due to Fees
First Claim
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1. An intelligent High Intensity Discharge (HID) lamp dimming system which obtains its internal electrical supply power and power to operate external sensors directly from the current supplied to the controlled HID lamp comprising:

  • a. a power extraction circuit having a current operated power transformer incorporated within the unit whose primary is effectively connected in series with one of the HID lamp supply leads without access to the interior of the HID lamp ballast. The isolated, low voltage from the transformer secondary is sufficient to power the internal circuitry of the control device as well as provide external sensor power even during HID lamp start-up and dimming periods. b. a series, reactive component when inserted by said electronic control device, causes a reduction of input power to high intensity discharge lamp and concurrently reduces said lamp lumen output. c. a means for controlling the insertion of said series, reactive component when predetermined conditions have developed thereby reducing the input power to High Intensity Discharge lamp, resulting in an electrical energy saving.

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