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.

Date of Patent:
Feb. 02, 2016

Filed:

Jan. 24, 2014
Applicant:

Emerson Network Power, Energy Systems, North America, Inc., Warrenville, IL (US);

Inventors:

Yaming Shi, Shenzhen, CN;

Yuangang Liu, Shenzhen, CN;

Liwei Huang, Shenzhen, CN;

Xiangsheng Li, Shenzhen, CN;

Feng Xu, Shenzhen, CN;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01F 17/06 (2006.01); H01F 27/28 (2006.01); H02M 5/06 (2006.01); H01F 3/14 (2006.01); H01F 27/38 (2006.01); H01F 27/34 (2006.01);
U.S. Cl.
CPC ...
H01F 3/14 (2013.01); H01F 27/38 (2013.01); H01F 27/2823 (2013.01); H01F 2027/348 (2013.01);
Abstract

There is provided a transformer including an E shaped and two I shaped magnetic cores and a first, second and third windings, wherein: one I shaped magnetic core is located between one side and a middle legs of the E shaped magnetic core, another is located between another side and the middle legs; there is an air gap on each of the two I shaped magnetic cores or two side or bottom legs of the E shaped magnetic core, the first winding is wound on a part of the magnetic cores where the air gap exists; the second and third windings are wound on the middle leg; and the first winding is connected in parallel with the second winding to constitute a primary winding; the third winding is a secondary winding. With the transformer provided by the invention, transformer winding loss can be reduced, and transformer efficiency can be improved.


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