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:
Oct. 28, 2008
Filed:
Jun. 23, 2006
Tien-hsiang Meng, Shenzhen, CN;
Chi-hsiung Lee, Shenzhen, CN;
Tien-Hsiang Meng, Shenzhen, CN;
Chi-Hsiung Lee, Shenzhen, CN;
Hon Hai Precision Industry Co., Ltd., Tu-Cheng, Taipei Hsien, TW;
Abstract
A power system for driving a plurality of lamps includes a transformer circuit, a current balancing circuit, and a light source. The transformer circuit includes a plurality of transformers in a quantity denoted by N, and each of the transformers has a first, a second, a third, and a fourth output ends. The current balancing circuit includes a plurality of current balancing units each having two output ends. The 2Nth current balancing unit is connected to a fourth output end of the Nth transformer, and the (2N−1)th current balancing unit is connected to a first output end of the Nth transformer. The light source has a plurality of lamps each having one end connected to a respective output end of the current balancing units and another end grounded. The numbers of the current balancing units and the lamps are respectively twice and four times the quantity N of the transformers.