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. 03, 2002
Filed:
Feb. 05, 2001
Mark Kastner, New Berlin, WI (US);
Harry M. Pyne, New Berlin, WI (US);
Everbrite, Inc., Greenfield, WI (US);
Abstract
A power supply for a gas discharge lamp is claimed. An input circuit receives power from a power source. An output transformer having a primary winding and a secondary winding and has a lamp connected in circuit across the secondary winding. First and second power switches switch power to the primary winding. The driver drives the power switches at a drive frequency. A tuned LC resonant circuit having a resonant frequency is connected in circuit between the driver and the lamp. A controller generates control signals to the driver at a first frequency that is functionally related to the drive frequency, and regulates the lamp current by controlling the difference between the resonant frequency and the first frequency.