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:
Apr. 03, 2012
Filed:
Sep. 01, 2009
Ching-piao Chen, Zhudong Township, Hsinchu County, TW;
Ching-Piao Chen, Zhudong Township, Hsinchu County, TW;
Inergy Technology Inc., Jhubei, Hsinchu Country, TW;
Abstract
An electronic ballast device includes a stabilizer and a sweep frequency circuit for preheating. The stabilizer includes a first input terminal, a second input terminal and an output terminal connected to a fluorescent lamp. The sweep frequency circuit includes a boost element, an impedance element, a switch and a frequency selective circuit. The boost element includes a first end and a second end separately electrically connected to the first input terminal and the impedance element. The switch includes an input terminal electrically connected to the common contact point of the boost element and the impedance element, an output terminal and a reference voltage input terminal electrically connected to the common contact point of the boost element and the stabilizer. Furthermore, the frequency selective circuit is electrically connected to the output terminal of the switch, the first input terminal of the stabilizer and the second input terminal of the stabilizer.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile