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:
Jul. 05, 2005
Filed:
Jul. 02, 2003
Thomas Hanisch, Dresden, DE;
Igor Kartashev, Deutschlandsberg, AT;
Arnulf Rupp, Taufkirchen, DE;
Abstract
The following circuit is proposed for discharge lamps having a particularly high starting voltage. An a.c. voltage generator () provides a corresponding a.c. voltage. A starting voltage generating device, which comprises a piezo transformer (), is connected to the a.c. voltage generator () and can be connected at its output to a discharge lamp (), generates a starting voltage from the a.c. voltage. The starting voltage generating device in this case comprises at least one diode () which is connected in parallel with the output of the starting voltage generating device. A zero-order pump circuit is thus integrated in the starting circuit. Advantageous here is the use of higher-order pump circuits.