Patent · US Active

Smoothing circuit for improving EMC

US7309963B2 · kind B2 · utility

1Cited by

4References

19Claims

0Family size

Assignee

Patent-Treuhand-Gesellschaft fur elektrische Gluhlampen mbH · DE

Inventors

Olaf Busse · Munich, DE
Markus Heckmann · Munich, DE
Reinhard Lecheler · Leibnizweg, DE
Alfons Lechner · Pfaffenhofen an der Ilm, DE
Siegfried Mayer · Leinfelden, DE
Thomas Pollischansky · Stadtbergen, DE
Bernd Rudolph · Forstern, DE
Bernhard Schemmel · Weßling, DE
Kay Schmidtmann · Birkenfeld, DE
Harald Schmitt · Hersbruck, DE
Thomas Siegmund · West Lafayette, US
Arwed Storm · Dachau, DE
Horst Werni · Birkenfeld, DE

Key dates

Filing date	Jun 20, 2006
Grant date	Dec 18, 2007
Priority date	—
Expiry date	Aug 10, 2026

Classification

Technology area (CPC H)Electricity
CPC primaryH05B41/2855
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

The present invention relates to an electronic ballast for discharge lamps, for example low-pressure discharge lamps, having a converter having a switching element and a two-part lamp inductor which is connected upstream and downstream of the discharge lamp. An electronic ballast according to the invention has a smoothing circuit which reduces voltage jumps caused by switching operations in the converter at the lamp terminals.

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