High frequency, high efficiency electronic lighting system with iodine and/or bromine-based metal halide high pressure discharge lamp
October 12, 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 References 3610983 Lighting network including a gas discharge lamp and standby lamp Two-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 Lighting system with variable control current sensing ballast InventorAssigneeApplicationNo. 689256 filed on 10/12/2000US Classes:315/307, Automatic regulation315/209R, PERIODIC SWITCH IN THE SUPPLY CIRCUIT315/224, Impedance or current regulator in the supply circuit315/291CURRENT AND/OR VOLTAGE REGULATIONExaminersPrimary: Philogene, HaissaAttorney, Agent or FirmInternational ClassG05F 001/00AbstractThe 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 a metal-halide high-pressure discharge lamp which contains iodine, bromine or both, yttrium, an inert gas, halogen, thallium, hafnium, whereby hafnium can be replaced wholly or partially by zirconium, dysprosium and/or gadolinium as well as, optionally, cesium.Field of SearchAutomatic regulationCURRENT AND/OR VOLTAGE REGULATION Impedance or current regulator in the supply circuit Periodic switch in the primary circuit of the supply transformer SURGE GENERATOR OR INDUCTANCE IN THE SUPPLY CIRCUIT Plural discharge devices and/or rectifiers in the supply circuit PERIODIC SWITCH IN THE SUPPLY CIRCUIT Over-voltage or over-current controlled substitution WITH AUTOMATIC SHUNT AND/OR CUTOUT Electrically operated switch controlling the signal circuit Includes mercury in gas or vapor fill Mercury vapor And rare earth metal With rare gas | |
