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:
Dec. 17, 2002
Filed:
Sep. 24, 2001
Mark Kastner, New Berlin, WI (US);
Everbrite, Inc., Greenfield, WI (US);
Abstract
A power supply connectable to a power source and to a gas-discharge tube. The power supply includes a transformer having a primary winding, a secondary winding, and first and second switches. The switches receive first and second drive signals, respectively, and switch power to the primary winding. The power supply further includes a controller interconnected to the first and second power switches. The controller is operable to generate the first and second drive signals for a time period. For a first time interval of the time period, the controller transitions the first and second drive signals from a first frequency to a second frequency. For a second time interval of the time period, the controller generates the first and second drive signals at the second frequency. For a third interval of the time period, ceases generation of the varying signal.