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:
Sep. 30, 2003
Filed:
May. 31, 2002
Rosario Scollo, Misterbianco, IT;
STMicroelectronics, S.r.l., Agrate Brianza, IT;
Abstract
A resonant driving system for a fluorescent lamp having one end connected to a primary winding of a transformer. The driving system includes an inductor inserted between an input section of the resonant driving system and an internal circuit node that is connected to another end of the fluorescent lamp a converter inserted between the internal node and a voltage reference and comprising a first transistor and a second transistor of the complementary type, inserted, in series to each other, between the internal node and the voltage reference, and a control circuit connected to a secondary winding of the transformer and to the converter as well as to the control terminals of the first and second transistors of the converter, wherein the control circuit comprises an inductor connected to a resistor that is connected to the control terminals of the first and second transistors through a first and a second capacitor respectively.