High frequency, high efficiency electronic lighting system with sodium lamp
December 20, 2020. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesTwo-wire electronic dimming ballast for gaseous discharge lamps High pressure discharge lamps with means for reducing rectification 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 Lighting system with variable control current sensing ballast Electrode feedthrough connection strap for arc discharge lamp InventorApplicationNo. 741726 filed on 12/20/2000US Classes:315/224, Impedance or current regulator in the supply circuit315/219, Periodic switch in the primary circuit of the supply transformer315/291CURRENT AND/OR VOLTAGE REGULATIONExaminersPrimary: Wong, DonAssistant: Vu, Jimmy T. Attorney, Agent or FirmInternational ClassH05B 037/02AbstractThe present invention is a high frequency, high efficiency start and quick restart system including a lamp. It includes hook ups for connecting and applying a power input to circuitry; a switch for switching a lamp on and off, and 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. There is also a feedback current sensor; a power factor correction regulator; bulb status feedback; a bulb voltage controller; a conditioning filter; a half-bridge; a DC output inverter; and, output and connection for, as well as, a sodium discharge lamp.Field of SearchPeriodic switch in the primary circuit of the supply transformerImpedance or current regulator in the supply circuit CURRENT AND/OR VOLTAGE REGULATION End cap seal End plug seal Having lead-in shield Envelope with particular structure Including electrode or getter mounting Electrode making Hermetically assembling plural parts | |
