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. 17, 2010
Filed:
Mar. 22, 2006
Applicants:
Klaus Fischer, Friedberg, DE;
Josef Kreittmayr, Bobingen, DE;
Inventors:
Klaus Fischer, Friedberg, DE;
Josef Kreittmayr, Bobingen, DE;
Assignee:
OSRAM Gesellschaft mit beschraenkter Haftung, Munich, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H05B 37/02 (2006.01);
U.S. Cl.
CPC ...
Abstract
An electronic ballast presenting an input capacitor (C) and including a step-up converter (LH, DH, SH, CH) for operating a load, for example a discharge lamp (CFL), on a phase control dimmer (DIM) having an integrated or parasite inductance (L). According to the invention, excessive voltage after connection with a phase control can be reduced by adjusting currents via of the step-up converter (LH, DH, SH, CH).