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:
Dec. 31, 2013
Filed:
Aug. 23, 2011
Robert S. Wrathall, Scotts Valley, CA (US);
Robert S. Wrathall, Scotts Valley, CA (US);
Other;
Abstract
A power factor correction circuit responsive to an input power supply signal at an input supply voltage is described. The circuit includes rectifier circuitry for largely performing full-wave rectification on the input supply signal to produce a full-wave rectified supply signal at a full-wave rectified voltage and a full-wave rectified current susceptible of having at least one overtone of the fundamental supply frequency. The circuit also includes a regulator for regulating the full-wave rectified voltage to produce a regulated power supply voltage with reduced voltage ripple, the regulator operating in buck-boost mode, and control circuitry for measuring at least one such overtone in the full-wave rectified current. The control circuitry also provides the regulator with a primary control signal that causes at least one such overtone to be largely removed from the full-wave rectified current.