Patent · US Active

Electronic ballast for operating at least one discharge lamp

US8587210B2 · kind B2 · utility

0Cited by

2References

13Claims

0Family size

Assignee

OSRAM GmbH · DE

Inventors

Maximilian Gerber · Munich, DE
Wolfram Sowa · Munich, DE
Arwed Storm · Dachau, DE

Key dates

Filing date	Jun 21, 2010
Grant date	Nov 19, 2013
Priority date	—
Expiry date	Oct 10, 2030

Classification

Technology area (CPC H)Electricity
CPC primaryH05B41/2822
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

An electronic ballast for operating at least one discharge lamp may include an input having a first and a second input connection for coupling to a DC supply voltage; a load circuit having an output; a constant-current transformer which includes a converter throttle, a converter diode and a converter switch, whereby the converter throttle is coupled serially between the first input connection and the load circuit; an activation circuit which is configured to activate the converter switch during operation with an HF signal; wherein at least one component across which a second voltage which is opposite in phase to the first voltage drops during operation is coupled between the internal and the external reference potential.

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