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 8040697 B1

PDF
Full Text
Expired
Date of Patent:
Oct. 18, 2011

Filed:

Mar. 12, 2009
Applicants:

Jun Zhou, Hangzhou, CN;

Xiao-lin MA, Hangzhou, CN;

Bing Guo, Hangzhou, CN;

Inventors:

Jun Zhou, Hangzhou, CN;

Xiao-Lin Ma, Hangzhou, CN;

Bing Guo, Hangzhou, CN;

Assignee:

Acbel Polytech Inc., Tamshui Chen, Taipei Hsien, TW;

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

A resonant circuit has two parallel resonant branches and one assistant inductor connecting the two resonant branches. Each resonant branch has a series capacitor and a series inductor connected in series. The other end of the series inductor is for connecting to a primary side of a transformer unit. The resonant circuit can provide two characteristic resonant frequencies fr and fm, so that a resonant power converter using the resonant circuit has an operating frequency fs that satisfies fs>fr or fm<fs<fr. The combination of the two resonant branches and the assistant inductor can reduce the frequency switch range of the resonant power converter within a specific voltage gain.


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Zhou, Jun. (2011). Resonant circuit and resonant power converter with a narrow operating frequency bandwidth (U.S. Patent No. 8040697). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/8040697

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