Electronic ballast for gas discharge lamps

Details Electronic ballast for gas discharge lamps Electronic ballast for gas discharge lamps

1995-09-08

1997-02-04

Pascal, Robert

Electric lamp and discharge devices: systems

Current and/or voltage regulation

Automatic regulation

315291, 315209R, 315DIG4, 315DIG7, G05F 100

Patent

active

056002114

ABSTRACT:
A control system for gas discharge lamps (5) includes a fuzzy controller (7) which, for controlling the lamp current of the gas discharge lamp, generates a setting value for an inverter (3), for setting the frequency or duty ratio of the lamp current, in dependence upon an actual value of the lamp current. Further, in accordance with the invention, fuzzy logic is employed for the purpose of recognition of the lamp type of a connected gas discharge lamp (5), in that on the basis of various detected operational parameter values, during the operation of the gas discharge lamp, the lamp type of the gas discharge lamp is determined.

REFERENCES:
patent: 4958108 (1990-09-01), Jorgensen
patent: 5039921 (1991-08-01), Kakitani
patent: 5297015 (1994-03-01), Miyazaki et al.

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