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:
May. 26, 1998
Filed:
Sep. 30, 1996
Applicant:
Inventor:
Franciscus A Schoofs, Eindhoven, NL;
Assignee:
U.S. Philips Corporation, New York, NY (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02M / ; H02M / ; H02P / ;
U.S. Cl.
CPC ...
363 21 ; 363 97 ; 363131 ;
Abstract
A switched-mode power supply which uses the primary winding of the isolation transformer as the feedback mechanism for the regulation of the secondary voltage or current. The primary winding voltage and current are used to control the sampling of the primary winding to obtain a measurement signal which is proportional to the secondary voltage or current, and this measurement signal is used to control the switched drive signal. By using the primary winding as the feedback winding, parts can be saved, and the transformer can be of simpler construction.