Patent ReferencesTwo-wire electronic dimming ballast for gaseous discharge lamps Frequency modulation ballast circuit Ballast for ionic conduction lamps Driver circuit for power transistors Method of operating gas-filled tubes Dimming method and device for fluorescent lamps used for backlighting of liquid crystal screens Variable control, current sensing ballast Dimmable high power factor high-efficiency electronic ballast controller integrated circuit with automatic ambient over-temperature shutdown Lighting system with variable control current sensing ballast Lamp out detection for miniature cold cathode fluorescent lamp system InventorApplicationNo. 592606 filed on 06/13/2000US Classes:315/224, Impedance or current regulator in the supply circuit315/291, CURRENT AND/OR VOLTAGE REGULATION315/307, Automatic regulation315/308Regulator responsive to plural conditionsExaminersPrimary: Wong, DonAssistant: Alemu, Ephrem Attorney, Agent or FirmInternational ClassH05B 037/02AbstractThe present invention is a high frequency, high efficiency start and quick restart system for lighting various types of lamps. It includes electronic circuitry and components mounted on a housing unit. These include hook ups for connecting and applying a power input to the circuitry; a switch for switching a lamp on and off, which switch means is connected to control power; auto-ranging voltage control circuitry; and a three stage power factor correction microchip controller. The microchip controller is a Bi-CMOS microchip and includes a feedback current sensor; a power factor correction regulator; bulb status feedback-means; a bulb voltage controller; a conditioning filter; a half-bridge; a DC output inverter; and, output and connection for a lamp. | |