Patent ID: 6344717
Filing Date: 2002-02-05
Classification: H05B,Y10S

Abstract:
A high frequency, high efficiency electronic system for lighting, which comprises:(a) a housing unit to mount electronic circuitry and related components; (b) electronic circuitry and components mounted on said housing unit, which includes: (i) means for connecting and applying a power input to said circuitry; (ii) switch means for switching a lamp on and off, which switch means is connected to control power to said circuitry; (iii) auto-ranging voltage control circuitry and components, including an auto line supply filter and a line voltage correction EMI to provide an auto-ranging voltage intake/output capability; (iv) a three stage power factor correction microchip controller, said microchip controller being a Bi-CMOS microchip; (v) a feedback current sensor; (vi) a power factor correction regulator; (vii) lamp status feedback means; (viii) a lamp voltage controller; (ix) a conditioning filter; (x) a half-bridge; (xi) a DC output inverter; and, (xii) output means and connection for a lamp; and, (c) a metal-halide high-pressure discharge lamp which includes a discharge vessel having a cavity, two electrodes operatively positioned within said cavity, and an ionizable filling within said cavity, said filling comprising at least one inert gas, mercury, at least one halogen selected from bromine, iodine and mixtures thereof, and the following elements for the formation of halides: thallium, hafnium, whereby hafnium can be wholly or partially replaced by zirconium, and a rare earth metal selected from the group consisting of dysprosium and/or gadolinium, said fill further including yttrium, said lamp being connectable to said output means and connection.