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. 18, 1985
Filed:
Aug. 08, 1983
Applicant:
Inventor:
Marshal H Martin, Northridge, CA (US);
Assignee:
Indicator Controls Corp., Gardena, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H05B / ;
U.S. Cl.
CPC ...
315221 ; 315222 ; 315244 ; 315D / ;
Abstract
A solid state power supply and light emission controller for a cold cathode luminescent tube which converts alternating current line voltage, or direct current voltage, into a variable repetition rate pulse alternating current voltage for energizing the tube and for controlling the light emission of the tube. The power supply provides for essentially constant light emission from the tube in the presence of variations in the internal impedance of the tube, variations in ambient temperature, and variations in line voltage. The power supply finds use, for example, with cold cathode luminescent tubes such as neon tubes, and the like.