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:
Jun. 02, 2009
Filed:
Feb. 03, 2006
Applicants:
Alois Braun, Neuburg, DE;
Walter Limmer, München, DE;
Joachim Mühlschlegel, Gröbenzell, DE;
Markus Ziegler, Schaumburg, IL (US);
Inventors:
Alois Braun, Neuburg, DE;
Walter Limmer, München, DE;
Joachim Mühlschlegel, Gröbenzell, DE;
Markus Ziegler, Schaumburg, IL (US);
Assignee:
Osram Gesellschaft mit Beschraenkter Haftung, Munich, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H05B 39/04 (2006.01);
U.S. Cl.
CPC ...
Abstract
The invention relates to an electronic ballast and to an operating method for high-pressure discharge lamps. During a current measurement, in particular for current regulation, only switching phases of a specific polarity of the current are taken into consideration.