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. 11, 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 ...
3152 / ; 315210 ; 315226 ; 315D / ;
Abstract
An electronic ballast for use with fluorescent lamps including an inverter circuit for converting a direct current power source to a high voltage alternating current and starting means to inhibit operation of one of the inverter transistors until such time as fluorescent lamp is turned on. The circuitry taught eliminates substantial drain usually found at start up of inverter circuits due to the large capacitors usually found in such circuitry.