Patents Assigned to Cornell Dubilier Electronics
  • Modular lighting control with circulating inductor
    Patent number: 4523129
    Abstract: The invention is directed to a circuit and a method for efficiently controlling the output illumination level in gas discharge lighting arrangements. Load side control is provided by a timed interval controlled impedance, serially coupled between the ballast and the lamp(s). A circulating inductor, coupled in parallel with the controlled impedance, provides a current path between the power source and the lamp(s) at least during that portion of the AC waveform where the controlled impedance is in a substantially non-conducting state.
    Type: Grant
    Filed: April 3, 1984
    Date of Patent: June 11, 1985
    Assignee: Cornell Dubilier Electronics
    Inventor: Ira J. Pitel