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Ballast circuit with independent lamp control

  • US 6,222,326 B1
  • Filed: 09/03/1999
  • Issued: 04/24/2001
  • Est. Priority Date: 10/16/1998
  • Status: Expired due to Fees
First Claim
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1. A method of energizing first and second lamps by two AC input signals, comprising:

  • coupling a first AC input signal to a ballast;

    coupling a second AC input signal to the ballast;

    energizing a first lamp when the first AC input signal is present regardless of whether the second AC input signal is present; and

    energizing the second lamp when the second AC input signal is present regardless of whether the first AC input signal is present.

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