Energy management/dimming system and control

Details Energy management/dimming system and control Energy management/dimming system and control

1985-09-26

1987-05-05

Dixon, Harold

Electric lamp and discharge devices: systems

Plural power supplies

Diverse-type current supplies

315176, 315194, 315199, 315DIG4, H05B 3700

Patent

active

046635696

ABSTRACT:
A fluorescent lamp dimming system which can be used in a retrofit manner with existing fluorescent lamp ballasts achieves a greater degree of energy management than has been previously possible. A dimming control having closed-loop feedback uses integrals of current as a measure of light output from the fluorescent lamps. The electronic control circuit implements complex control methods in a minimal space and at a minimal cost.

REFERENCES:
patent: 4350935 (1982-09-01), Spira et al.
patent: 4392086 (1983-07-01), Ide et al.
patent: 4482844 (1984-11-01), Schweer et al.
patent: 4527099 (1982-07-01), Capewell et al.
patent: 4604552 (1986-08-01), Alley

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