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.:

US 7515439 B1

PDF
Full Text
Expired
Date of Patent:
Apr. 07, 2009

Filed:

Jun. 18, 2007
Applicant:

Ching-shan Leu, Taipei, TW;

Inventor:

Ching-Shan Leu, Taipei, TW;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02M 3/335 (2006.01); H02M 7/217 (2006.01); H02M 7/5387 (2007.01);
U.S. Cl.
CPC ...
Abstract

A circuit used to convert a DC input to an AC output comprises a pair of series circuits, one or two capacitors, and one transformer. Each of the series circuits is in parallel with the DC input and comprises a pair of series-connected switches and at least one transformer primary. Each capacitor couples the two series circuits, and is attached to each series circuit at a node between the respective transformer primary and switch. The center nodes between two series-connected switches are connected together. At least one secondary on the transformer provides the AC output. Optionally, multiple transformers may be utilized. Similar topologies may be used for rectification instead of inversion.


Find Patent Forward Citations

Leu, Ching-Shan. (2009). Low voltage stress power converter (U.S. Patent No. 7515439). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/7515439

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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