Gas discharge lamp dimming system employing switching...

Details Gas discharge lamp dimming system employing switching... Gas discharge lamp dimming system employing switching...

H - Electricity

05

B

315/44

H05B 41/38 (2006.01) H02M 5/257 (2006.01) H05B 41/392 (2006.01)

Patent

CA 1225430

ABSTRACT OF THE DISCLOSURE A gas discharge lamp control system employs a dimmer structure which has proportional input control. The propor- tional control is controlled by a circuit which obtains an input from switching contacts which are switched between on and off positions according to a predetermined schedule by time of day control and by energy management control. Out- puts from the contacts are applied to a digital-to-analog converter which converts the digital contact switching in- formation into an analog signal related to a dimming level for the gas discharge lamp circuit. The analog output sig- nal is connected through a fader circuit to the proportional control electrode of the gas discharge lamp dimmer system.

461785

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