Photocontrol for electric lamps

Electric lamp and discharge devices: systems – With radiant energy sensitive control means – Radiant energy control of an electric discharge device in...

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Details

315157, 315159, 315360, H05B 3902

Patent

active

040084159

ABSTRACT:
An improved photocontrol system for electrical lamps comprising the combination of photoelectric means responsive to the intensity of the ambient light for controlling the turning the lamps on and off, and an electronic timer for turning off the lamps at a preset time interval, after they have been turned on.

REFERENCES:
patent: 2140387 (1938-12-01), Juchter
patent: 2295894 (1942-09-01), Dewan
patent: 3366801 (1968-01-01), Rulseh
patent: 3450939 (1969-06-01), Misencik
patent: 3539861 (1970-11-01), Blackford
patent: 3611432 (1971-10-01), Babcock
patent: 3648107 (1972-03-01), Rydborn

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