Patent · US Expired

Electronic ballast for a lamp

US7279848B2 · kind B2 · utility

3Cited by

2References

6Claims

0Family size

Assignee

Patent-Treuhand-Gesellschaft fur elektrische Gluhlampen mbH · DE

Inventors

Markus Heckmann · Munich, DE
Thomas Pollischansky · Stadtbergen, DE

Key dates

Filing date	Apr 13, 2006
Grant date	Oct 9, 2007
Priority date	—
Expiry date	Apr 13, 2026

Classification

Technology area (CPC H)Electricity
CPC primaryH05B41/2856
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

An electronic ballast for a lamp having a bridge circuit, includes at least one first switch and a second switch, a center point of the bridge circuit between the first and second switch, the center point coupled on one side to a reference potential via the series circuit including a first capacitor and a diode and on the other side to a first connection for the lamp via an inductance; a control unit for driving the first and second switches. The control unit has a supply connection coupled to the connection point between the first capacitor and the diode, the voltage across the supply connection being limited in terms of its amplitude, and having a measurement signal input for feeding a measurement signal to the control unit; the measurement signal input being coupled to the connection point between the first capacitor and the diode.

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