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. 01, 2005
Filed:
Jan. 25, 2002
Jonas Eriksson, Stenhamra, SE;
Jonas Eriksson, Stenhamra, SE;
Telefonaktiebolaget LM Ericsson (publ), Stockholm, SE;
Abstract
To demagnetize a transformer (TR) in a single-ended forward DC/DC converter with self-driven synchronized rectifiers (V, V) connected across the secondary winding (N) of the transformer (TR), a diode (D) is connected in series with a capacitor (C) across the primary winding (N) of the transformer. The diode (D) transfers magnetization energy stored in the transformer to the capacitor (C) every time a primary switch (V) of the converter is turned off. To ensure optimum efficiency of the synchronized rectifiers, a discharging circuit is connected to the capacitor (C) for discharging the magnetization energy stored therein by drawing a DC current (I) from the capacitor (C) in response to varying input DC voltage such that complete demagnetization of the transformer (TR) always is attained just before turn-on of the primary switch (V).
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile