Electric lamp and discharge devices: systems – Current and/or voltage regulation – Automatic regulation
Patent
1996-12-17
1998-08-25
Pascal, Robert J.
Electric lamp and discharge devices: systems
Current and/or voltage regulation
Automatic regulation
315291, 315224, 315209R, 315DIG4, G05F 100
Patent
active
057986207
ABSTRACT:
Step dimming of a fluorescent lamp load through sensing of power line interruptions generated through the toggling of a switch. The number of power line interruptions through toggling produced within a predetermined period of time identifies the level of dimming desired. In the event that interruption of power to the ballast exceeds the predetermined period of time, the lamp load will be reset to a prefixed level of illumination once power is restored.
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De Mol Eugen J.
Jayaraj Vinit
Wacyk Ihor T.
Blocker Edward
Pascal Robert J.
Philips Electronics North America Corporation
Philogene Haissa
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