Patents Assigned to Commodore Electronics, Ltd.
  • Solid-state fluorescent lamp ballast
    Patent number: 4388563
    Abstract: An improved solid-state fluorescent lamp ballast circuit in which rectified line voltage is chopped, utilizing high power field effect transistors, to provide a high frequency input to a fluorescent lamp, thus permitting smaller reactive components to be utilized. Also shown is circuitry whereby the duty cycle of the chopping switches may be modulated to permit dimming of the lamp, which may be remotely located.
    Type: Grant
    Filed: May 26, 1981
    Date of Patent: June 14, 1983
    Assignee: Commodore Electronics, Ltd.
    Inventor: Tom M. Hyltin