The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 09, 2011
Filed:
Dec. 13, 2006
Christian Breuer, Newburyport, MA (US);
Martin Brückel, Garching, DE;
Andreas Huber, Maisach, DE;
Henning Rehn, Berlin, DE;
Bernhard Reiter, München, DE;
Christian Breuer, Newburyport, MA (US);
Martin Brückel, Garching, DE;
Andreas Huber, Maisach, DE;
Henning Rehn, Berlin, DE;
Bernhard Reiter, München, DE;
OSRAM Gesellschaft mit Beschränkter Haftung, München, DE;
Abstract
A circuit arrangement for operating a discharge lamp, wherein the circuit arrangement comprises a commutation device, which has an input which is coupled to a DC source, and has an output which can be coupled to a discharge lamp. The commutation device is designed in such a way that it couples the DC source to the output, and the polarity at which the DC source is coupled to the output can be commutated by a control device. The control device has a sync input, and the polarity of the DC source is commutated in synchronism with sync pulses of a sync signal which can be applied at the sync input. The control device has a measuring input, which is coupled to a measuring device which is designed to provide a measured value which is a measure of the size of electrode peaks. The control device suppresses at least one commutation if the measured value overshoots or undershoots a predetermined threshold value.