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:
Aug. 23, 2011

Filed:

Nov. 19, 2008
Applicants:

Yu-lung Lee, Nanjhuang Township, Miaoli County, TW;

Tsong-hwa Chen, Chung Ho, TW;

Kuo-tian Cheng, Tucheng, TW;

Inventors:

Yu-Lung Lee, Nanjhuang Township, Miaoli County, TW;

Tsong-Hwa Chen, Chung Ho, TW;

Kuo-Tian Cheng, Tucheng, TW;

Assignee:

Powertech Industrial Co., Ltd., Taipei Hsien, TW;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02J 9/00 (2006.01);
U.S. Cl.
CPC ...
Abstract

A two-stage power supply system includes a standby power circuit, a main power circuit, a driver and, a rectifier. Moreover, the standby power circuit is used to convert a utility AC (Alternating Current; AC) into a standby AC. The main power circuit is used to convert the utility AC into a main AC. Furthermore, the driver is coupled to the main power circuit so as to control whether or not the main power circuit outputs the main AC to the rectifier. Finally, the rectifier is coupled to the standby power circuit, the main power circuit, and a load, wherein the rectifier rectifies the standby AC alone for outputting a standby DC (Direct Current; DC) to the load, or rectifies an integrated AC of the standby AC and the main AC for outputting a supply DC to the load.


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Lee, Yu-Lung. (2011). Two-stage power supply system (U.S. Patent No. 8004114). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/8004114

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