Patent · US Active

Circuit arrangement for firing a discharge lamp

US8143795B2 · kind B2 · utility

1Cited by

8References

12Claims

0Family size

Assignee

OSRAM GmbH · DE

Inventors

Christian Breuer · Newburyport, US
Martin Brückel · Garching bei München, DE
Andreas Huber · Holzgerlingen, DE
Ralf Hying · Munich, DE
Bernhard Reiter · Munich, DE

Key dates

Filing date	Nov 9, 2006
Grant date	Mar 27, 2012
Priority date	—
Expiry date	Jul 25, 2027

Classification

Technology area (CPC H)Electricity
CPC primaryH05B41/2883
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A circuit arrangement for starting a discharge lamp, comprising: a first and a second input terminal for connecting an input voltage; an inverter, which has an input and an output, the input being coupled to the first and the second input terminal; a first and a second output terminal for connecting the discharge lamp; a resonant inductor, which is coupled between the output of the inverter and the first output terminal; a resonant circuit, which comprises the resonant inductor; a regulating apparatus for regulating the frequency of the signal provided at the inverter output; and a current measuring apparatus, which is arranged so as to measure a current which is correlated with the current in the resonant circuit, wherein the regulating apparatus is adapted to regulate the frequency at the output of the inverter as a function of the measured current.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.