Now showing items 1-2 of 2

    • Discharge lamp driving circuit having resonant circuit defining two resonance modes 

      Virginia Tech Intellectual Properties, Inc.; Matsushita Electric Works, Ltd.; Lee, Fred C.; Yamauchi, Tokushi; Qian, Jinrong (United States Patent and Trademark Office, 1999-06-22)
      An improved discharge lamp driving circuit of a charge-pump type capable of suppressing a ripple in an envelop of a lamp current at the time of dimming the lamp or at a low environmental temperature. The circuit includes ...
    • Gas discharge lamp inverter with a wide input voltage range 

      Virginia Tech Intellectual Properties, Inc.; Lee, Fred C.; Qian, Jinrong (United States Patent and Trademark Office, 1999-09-07)
      A gas discharge lamp driving circuit reduces input power at start-up mode through the utilization of input power diodes and stress capacitors in parallel therewith. The circuit includes a blocking filter for filtering an ...