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:
Mar. 07, 2017
Filed:
Aug. 26, 2011
Applicants:
Dianbo Fu, Plano, TX (US);
Hengchun Mao, Plano, TX (US);
Bing Cai, Richardson, TX (US);
Inventors:
Assignee:
FUTUREWEI TECHNOLOGIES, INC., Plano, TX (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G05F 5/00 (2006.01); H02M 1/42 (2007.01); H02M 1/32 (2007.01);
U.S. Cl.
CPC ...
H02M 1/4225 (2013.01); H02M 1/32 (2013.01); Y02B 70/126 (2013.01);
Abstract
An embodiment holdup time circuit of a bridgeless power factor correction circuit comprises a charge device, an energy storage apparatus and a discharge device. The charge device comprises a first terminal coupled to a bridgeless power factor correction circuit and a second terminal coupled to the energy storage apparatus. The discharge device comprises a first terminal coupled to the energy storage apparatus and a second terminal coupled to the bridgeless power factor correction circuit.