Electronic ballast

Details Electronic ballast Electronic ballast

1999-09-01

2000-07-25

Philogene, Haissa

Electric lamp and discharge devices: systems

Current and/or voltage regulation

Plural load device regulation

315308, 315362, 315149, 315151, G05F 100

Patent

active

060940166

ABSTRACT:
An electronic ballast (EVG) is provided for operating at least one lamp (10), wherein a light sensor (20) for monitoring the brightness of a specific physical area (28) can be connected to the electronic ballast. A control arrangement (12) controls or regulates the brightness of the lamp (10) as a function of an actual brightness value delivered by the light sensor (20) and when the electronic ballast is put into operation automatically identifies whether a light sensor (20) is connected to the connection arrangement (18a, 18b). If no light sensor (20) is connected, the control or regulation of the brightness of the lamp (10) is effected as a function of externally supplied control information

REFERENCES:
patent: 3274392 (1966-09-01), Harling
patent: 4383288 (1983-05-01), Hess, II et al.
patent: 4701669 (1987-10-01), Head et al.
patent: 4703173 (1987-10-01), Wood et al.
patent: 4874989 (1989-10-01), Nilssen
patent: 5250799 (1993-10-01), Werner
patent: 5404080 (1995-04-01), Quazi
patent: 5493181 (1996-02-01), Shackle et al.
patent: 5701058 (1997-12-01), Roth

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