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:
Feb. 11, 2014
Filed:
Dec. 20, 2010
Dong-sheng LI, Tamshui Chen, TW;
Huai-shen Tsai, Tamshui Chen, TW;
Wei-liang Lin, Tamshui Chen, TW;
Sheng-chih Chang, Tamshui Chen, TW;
Dong-Sheng Li, Tamshui Chen, TW;
Huai-Shen Tsai, Tamshui Chen, TW;
Wei-Liang Lin, Tamshui Chen, TW;
Sheng-Chih Chang, Tamshui Chen, TW;
Acbel Polytech Inc., Taipei Hsien, TW;
Abstract
A symmetric planar transformer having adjustable leakage inductance has a circuit board, two first bobbins mounted respectively on opposite side surfaces of the circuit board, two primary windings mounted respectively on the first bobbins, two secondary windings disposed respectively between the circuit board and the first bobbins, two second bobbins disposed respectively between adjacent first bobbins and primary windings, two pad sets disposed respectively between adjacent first bobbins and second bobbins, and a magnetic core assembly mounted through the circuit board, the first and second bobbins, the secondary and primary windings and the pad sets. Adjusting the numbers of the at least one pad of each pad set also adjusts distances between the primary and secondary windings to allow the secondary windings to have the same leakage. Thus, a balanced electric current is induced.