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:
Jun. 20, 2017
Filed:
Dec. 21, 2012
Weilun Chen, Beijing, CN;
Weilun Chen, Beijing, CN;
Steve Jun Chen, Beijing, CN;
Other;
Abstract
A single-stage switched-mode power supply comprises: a dual-source ac rectifying unit (), for converting an alternating current input by an alternating current power source into at least two direct current sources, namely, a first direct current source () and a second direct current source (); a combination switch unit, at least comprising a first switch circuit () and a second switch circuit (), used for respectively performing power conversion on the first direct current source () and the second direct current source (), to output a direct current, wherein the first direct current source () is connected to the first switch circuit () through an energy-storage capacitor (), the first switch circuit () is any circuit capable of functioning as a switch circuit, and the second switch circuit () is a circuit capable of functioning as a flyback switch circuit. The single-stage switch power supply has complete power factor correction and output hold-up time, and further improves power source conversion efficiency.