Patent · US Active

Electronic ballast for a lamp

US7352079B2 · kind B2 · utility

0Cited by

5References

12Claims

0Family size

Assignee

Patent-Treuhand-Gesellschaft fur elektrische Gluhlampen mbH · DE

Inventors

Markus Heckmann · Munich, DE
Alfons Lechner · Pfaffenhofen an der Ilm, DE
Thomas Siegmund · West Lafayette, US

Key dates

Filing date	Apr 13, 2006
Grant date	Apr 1, 2008
Priority date	—
Expiry date	Oct 7, 2026

Classification

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

Abstract

An electronic ballast for a lamp has a DC voltage connection; a switching unit having a supply voltage with the DC voltage connection being coupled thereto, and a first capacitor coupled between the supply voltage connection and a reference potential; an AC voltage connection, at which a voltage can be made available which has at least one AC component. The series circuit includes a first nonreactive resistor and a first diode, as a second nonreactive resistor coupled between the AC voltage connection and the supply voltage connection, a connection point between the first diode and the second nonreactive resistor, and a second capacitor coupled between the connection point and the reference potential. The first capacitor and the second nonreactive resistor are dimensioned such that the average voltage drop across the second nonreactive resistor is greater than or equal to the average voltage drop across the first capacitor.

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