Three-way fluorescent adapter

Details Three-way fluorescent adapter Three-way fluorescent adapter

1996-01-11

1998-11-03

Lee, Benny

Electric lamp and discharge devices: systems

Current and/or voltage regulation

Automatic regulation

315324, 315DIG7, 315209R, 315DIG4, H05B 3702

Patent

active

058313958

ABSTRACT:
A control circuit and ballasting means controls the light output of a gas discharge lamp in response to switches that are external to the ballast. The invention provides 3 levels of light output with single or multiple lamps. One embodiment of the invention can be mounted in a standard three-way socket for incandescent lamps. Another embodiment can be used to control multiple lamps in a ceiling-mounted fixture, replacing an inboard/outboard configured multiple ballast circuit. Other embodiments provide circuits that allow conventional dimming ballasts which are designed to be controlled with a low-voltage DC input signal to be controlled by a pair of switches connected to an AC power source.

REFERENCES:
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patent: 4950959 (1990-08-01), Beckrot et al.
patent: 4963795 (1990-10-01), Nilssen
patent: 5101142 (1992-03-01), Chatfield
patent: 5146139 (1992-09-01), Nilssen
patent: 5175477 (1992-12-01), Grissom
patent: 5309062 (1994-05-01), Perkins et al.
patent: 5341067 (1994-08-01), Nilssen
patent: 5424610 (1995-06-01), Pelton

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