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:
Jun. 08, 1993
Filed:
Dec. 30, 1991
Applicant:
Inventor:
William H Jones, Villa Park, IL (US);
Assignee:
Appliance Control Technology, Inc., Addison, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H05B / ; H05B / ;
U.S. Cl.
CPC ...
315247 ; 3152 / ; 315224 ; 315307 ; 315D / ;
Abstract
A high power factor ballast circuit for use with fluorescent lamps consisting of a power factor correcting inductor periodically saturated to store pulses of direct current energy and periodically discharge same at a regular periodic rate to power the fluorescent lamp. A bistable flip-flop circuit and an associated solid state switching device combine to periodically control the saturation and discharge of the inductor.