Patents Assigned to Ballastronic, Inc.
  • Low frequency electronic ballast for gas discharge lamps
    Patent number: 7221107
    Abstract: An electronic ballast for high intensity gas discharge lamps where the wave form of the lamp current is square wave providing acoustic resonance and flickering free operation. The circuit, having high efficiency, operates in a wide temperature range providing ideal ballast curve and reliable ignition for the lamps. Furthermore, significant energy saving can be achieved by its externally controlled built in dimming capability.
    Type: Grant
    Filed: April 13, 2005
    Date of Patent: May 22, 2007
    Assignee: Ballastronic, Inc.
    Inventor: Janos Melis
  • Half-bridge inverter for asymmetrical loads
    Patent number: 6936974
    Abstract: The invention pertains to a switchmode power inverter, and particularly to a half-bridge inverter for asymmetrical load. More particularly, the invention pertains to high frequency electronic ballast for gas discharge devices, especially for high intensity discharge lamps, completed by an internal high voltage ignition circuit and transient current control protecting against the asymmetrical feature of high intensity discharge lamps at startup.
    Type: Grant
    Filed: January 30, 2004
    Date of Patent: August 30, 2005
    Assignee: Ballastronic, Inc.
    Inventor: Janos Melis