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. 11, 2000
Filed:
Dec. 03, 1998
Applicant:
Inventor:
Maurice Le Van Suu, Savigny le Temple, FR;
Assignee:
STMicroelectronics S.A., Gentilly, FR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H05B / ;
U.S. Cl.
CPC ...
219715 ; 236 / ;
Abstract
A power supply device for a non-linear load, especially a magnetron for microwave ovens, includes a resonant transformer. Using a fuzzy logic management unit, a level of a low voltage signal on the primary side of the transformer, a level of high voltage signal on the secondary side of the transformer, and a signal corresponding to the ambient temperature of the transformer are taken into account for the generation of a parameter for a control signal for controlling a switch positioned at the primary winding of the transformer. The power supply device makes it possible to reduce the size of the resonant transformer.