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:
May. 08, 1990
Filed:
Jul. 26, 1989
David A Fox, Shawnee Township, Allen County, OH (US);
David L Stechschulte, Pleasant Township, Putnam County, OH (US);
Westinghouse Electric Corp., Pittsburgh, PA (US);
Abstract
A single phase rectifier circuit produces a full wave rectified voltage by rectifying an AC input voltage, couples the rectified voltage to a filter capacitor through an inductor, and repeatedly switches the sum of the rectified voltage and the voltage on the capacitor across the inductor, thereby reducing input current distortion and improving the power factor of the circuit. When the rectified voltage is of a sufficient magnitude to drive current through the inductor, switching of the capacitor voltage across the inductor can be eliminated. The switching function is performed by a half bridge boost converter.