Solid state regulated power supply system for cold cathode lumin

Details Solid state regulated power supply system for cold cathode lumin Solid state regulated power supply system for cold cathode lumin

1983-05-23

1985-01-08

Dixon, Harold

Electric lamp and discharge devices: systems

Current and/or voltage regulation

Automatic regulation

315219, 315224, 315309, 315DIG7, G05F 100, H05B 3702

Patent

active

044928998

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.

REFERENCES:
patent: 3889153 (1975-06-01), Pierce
patent: 4060752 (1977-11-01), Walker
patent: 4251752 (1981-02-01), Stolz
patent: 4356433 (1982-10-01), Linden
patent: 4414493 (1983-11-01), Henrich

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