Solid state regulated power supply for luminescent lamp

Details Solid state regulated power supply for luminescent lamp Solid state regulated power supply for luminescent lamp

1990-04-25

1991-09-03

LaRoche, Eugene R.

Electric lamp and discharge devices: systems

With radiant energy sensitive control means

Load device irradiating the radiant energy responsive device

315158, 315307, H05B 3702

Patent

active

050457586

ABSTRACT:
A solid state power supply and light emission controller for a luminescent lamp which converts alternating current line voltage, or direct current voltage, into a constant repetition rate, variable width pulse alternating current voltage for energizing the lamp and for controlling the light emission of the lamp. The power supply provides essentially constant contrast (light brightness ratio) in the light emission from the lamp in the presence of variations in ambient light level. The system achieves its desired result by sensing the ambient light level and also by sensing the level of the light emitted by the lamp. The luminescent lamp may, for example, be a neon lamp, a white light fluorescent lamp, an incandescent lamp, or the like.

REFERENCES:
patent: 3901813 (1975-08-01), Potopinski
patent: 3965388 (1976-06-01), Brisk
patent: 3989980 (1976-11-01), Berman
patent: 4104562 (1978-08-01), DiCola
patent: 4114366 (1978-09-01), Renner
patent: 4227119 (1980-10-01), Murata
patent: 4368406 (1983-01-01), Kruzich
patent: 4467246 (1984-08-01), Tanaka
patent: 4605882 (1986-08-01), Deluca
patent: 4682084 (1987-07-01), Kuhnel
patent: 4701669 (1987-10-01), Head

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