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:
Jan. 08, 1985
Filed:
May. 23, 1983
Marshal H Martin, Northridge, CA (US);
Indicator Controls Corporation, Gardena, CA (US);
Abstract
A solid state power supply and light emission controller for a cold cathode luminous tube which converts standard 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 thereof. The power supply and controller provides for essentially constant light emission from the tube in the presence of variations in the load presented by the tube, ambient temperature and line voltage. The power supply and controller includes a flyback transformer circuit which, in turn, includes circuitry for monitoring the line voltage and the load presented by the tube, and for providing an automatic cut-off when the line voltage decreases below a predetermined level. The power supply and controller finds use, for example, with cold cathode luminescent tubes such as fluorescent-mercury-argon-neon, fluorescent neon, clear mercury-argon-neon, and clear neon.