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:
Feb. 11, 1997
Filed:
Aug. 30, 1994
Stefano Clemente, Rolling Hills Estate, CA (US);
International Rectifier Corporation, El Segundo, CA (US);
Abstract
A circuit for improving output voltage regulation of a power factor control stage providing power to a load. The circuit includes a voltage reference generating circuit that produces a voltage signal that is in phase lock with an input alternating current power line signal but is independent of voltage excursions of the alternating current line signal and unwanted voltage harmonics. The circuit also includes a control circuit receiving the voltage reference signal for controlling an electronic switch coupled to an input line providing power to the load. The electronic switch is pulsed on and off by the control circuit to force the current in the input line to the load to follow the reference voltage. The input alternating current line current is thus maintained in a substantially constant predetermined phase relationship with the input alternating current line voltage.