Patent · US Expired

Lighting system

US6891337B2 · kind B2 · utility

0Cited by

11References

9Claims

0Family size

Assignee

Patent-Treuhand-Gesellschaft fur elektrische Gluhlampen mbH · DE

Inventors

Andreas Huber · Holzgerlingen, DE
Herbert Kästle · Traunstein, DE
Walter Limmer · Birkenfeld, DE
Peter Niedermeier · Burghausen, DE

Key dates

Filing date	Apr 8, 2003
Grant date	May 10, 2005
Priority date	—
Expiry date	Sep 17, 2023

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02B20/00
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

Lighting system for high-pressure discharge lamps which can generate a lamp voltage UL which is amplitude and, if necessary, frequency-modulated. The frequency modulation is provided by an inverter whose inverter frequency is modulated. The inverter is fed by a clocked d.c. voltage supply which emits an operating voltage U0 which is amplitude-modulated.

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