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:
Aug. 08, 1989
Filed:
Oct. 27, 1988
Neil Kammiller, Lakewood, OH (US);
Reliance Comm/Tec Corporation, Chicago, IL (US);
Abstract
A power factor correction circuit for an off line supply of the switch mode type. In its simplest form the circuit is made up of a capacitor and an inductor. The capacitor is to be connected to the input rectifier of the supply. The capacitor is in aiding relationship for each half cycle of the line voltage. When so connected, a unidirectional current flows from the rectifier to charge the bank capacitors of the supply. The inductor is to be connected to at least the rectifier. The inductor causes the amplitude of the unidirectional current to increase and decrease at a rate which is less than it would be if the inductor was not so connected. Embodiments having at least two capacitors which are controlled to be switched in and out of the correction circuit as well as one or more inductors which may or may not be controlled are also disclosed.