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:
Oct. 07, 2008
Filed:
Sep. 25, 2006
Young G. Kang, Vernon Hills, IL (US);
Mustansir H. Kheraluwala, Lake Zurich, IL (US);
Sivakumar Thangavelu, Round Lake, IL (US);
Markus Ziegler, Schaumburg, IL (US);
Young G. Kang, Vernon Hills, IL (US);
Mustansir H. Kheraluwala, Lake Zurich, IL (US);
Sivakumar Thangavelu, Round Lake, IL (US);
Markus Ziegler, Schaumburg, IL (US);
Osram Sylvania Inc., Danvers, MA (US);
Abstract
A circuit () for igniting a high intensity discharge (HID) lamp comprises input terminals (), output terminal (), a charging circuit (R,C), a transformer () having a primary winding () and a secondary winding (), a MOSFET (), and a clamping diode (D). During operation, ignitor circuit () provides a high voltage (V) for igniting an HID lamp. Ignitor circuit () provides an ignition voltage (V) having a peak magnitude that is more predictable and less prone to degradation due to the influences of parasitic components. Additionally, ignitor circuit () may be realized in a manner that is significantly more cost-effective than comparable prior art circuits.