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:
Mar. 27, 2001
Filed:
May. 28, 1999
Applicant:
Inventor:
Peter Preller, München, DE;
Assignee:
Siemens Aktiengesellschaft, Munich, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02M 3/335 ;
U.S. Cl.
CPC ...
H02M 3/335 ;
Abstract
The switched-mode power supply has a transformer with an E-shaped core. Each side limb of the core is surrounded by a winding. The flow of current through the secondary winding is controlled by the output voltage to be regulated. A control signal for controlling the switching frequency of the power supply is decoupled at the primary side winding. This makes it possible to dispense with an optical coupler which would otherwise be necessary.