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. 14, 1983
Filed:
May. 26, 1981
Applicant:
Inventor:
Tom M Hyltin, Dallas, TX (US);
Assignee:
Commodore Electronics, Ltd., Nassau, BS;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H05B / ;
U.S. Cl.
CPC ...
315205 ; 315209 ; 315226 ; 315D / ;
Abstract
An improved solid-state fluorescent lamp ballast circuit in which rectified line voltage is chopped, utilizing high power field effect transistors, to provide a high frequency input to a fluorescent lamp, thus permitting smaller reactive components to be utilized. Also shown is circuitry whereby the duty cycle of the chopping switches may be modulated to permit dimming of the lamp, which may be remotely located.