Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Markus Ziegler0
Young G. Kang0
Sivakumar Thangavelu0
Mustansir H. Kheraluwala0
Date of Patent
October 7, 2008
Patent Application Number
11534926
Date Filed
September 25, 2006
Patent Primary Examiner
Patent abstract
A circuit (300) for igniting a high intensity discharge (HID) lamp comprises input terminals (302,304), output terminal (306,308), a charging circuit (RIGN,CIGN), a transformer (320) having a primary winding (322) and a secondary winding (324), a MOSFET (340), and a clamping diode (DCLAMP). During operation, ignitor circuit (300) provides a high voltage (VIGN) for igniting an HID lamp. Ignitor circuit (300) provides an ignition voltage (VIGN) having a peak magnitude that is more predictable and less prone to degradation due to the influences of parasitic components. Additionally, ignitor circuit (300) may be realized in a manner that is significantly more cost-effective than comparable prior art circuits.
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