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. 06, 2006
Filed:
Nov. 10, 2004
Applicants:
Andrew O. Johnsen, Danvers, MA (US);
Bernhard Ertl, Munich, DE;
Guy P. Bouchard, Beverly, MA (US);
Arnulf Rupp, Taufkirchen, DE;
Inventors:
Andrew O. Johnsen, Danvers, MA (US);
Bernhard Ertl, Munich, DE;
Guy P. Bouchard, Beverly, MA (US);
Arnulf Rupp, Taufkirchen, DE;
Assignee:
Osram Sylvania Inc., Danvers, MA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H05B 37/02 (2006.01); G05F 1/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A circuit for operating a high intensity discharge (HID) lamp includes an H-bridge connected between a common terminal and a power line, and a control circuit connected to the H-bridge. A boost circuit is connected in parallel with the H-bridge between the power line and the common terminal, where the boost circuit includes a resistor, a Zener diode and a capacitor connected in series.