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. 16, 1989
Filed:
Oct. 20, 1987
Applicant:
Inventor:
Patrick L Hunter, Miami Lakes, FL (US);
Assignee:
Computer Products Inc., Pompano Beach, FL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02M / ;
U.S. Cl.
CPC ...
363 44 ; 363 48 ; 363 89 ; 363126 ;
Abstract
A circuit and method using a low frequency active switch for improving input power factor in power supplies utilizing a full wave rectifier and capacitor filter for supplying a filtered DC voltage from an AC power source. A switch control activates and deactivates an active switching once in each half cycle of the alternating voltage input. The switch control is connected to the active switching for operating the circuit providing high power factor.