Patent · US Expired

Electronic ballast for a high-pressure discharge lamp having a current-measuring device

US7541744B2 · kind B2 · utility

1Cited by

18References

8Claims

0Family size

Assignee

OSRAM Gesellschaft mit beschraenkter Haftung · DE

Inventors

Alois Braun · Neubukow, DE
Walter Limmer · Birkenfeld, DE
Joachim Mühlschlegel · Drolshagen, DE
Markus Ziegler · Schaumburg, US

Key dates

Filing date	Feb 3, 2006
Grant date	Jun 2, 2009
Priority date	—
Expiry date	Feb 3, 2026

Classification

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

Abstract

The invention relates to an electronic ballast and to an operating method for high-pressure discharge lamps. During a current measurement, in particular for current regulation, only switching phases of a specific polarity of the current are taken into consideration.

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