Discharge lamp lighting device, lighting system and method

Details Discharge lamp lighting device, lighting system and method Discharge lamp lighting device, lighting system and method

2007-12-06

2008-12-30

Vo, Tuyet (Department: 2821)

Track sanders

Sand feeders

Chain

C291S027000, C291S027000, C291S027000, C291S027000, C361S072000, C361S042000, C361S065000

Reexamination Certificate

active

07469940

ABSTRACT:
A method and apparatus for protecting a discharge lamp lighting device from damage due to mis-wiring of a source of electrical power to the discharge lamp lighting device. The protection apparatus includes a detector, a comparer and an inhibitor. The detector samples at least one monitor point associated with the discharge lamp lighting device to obtain at least one detection voltage. The comparer compares the at least one detection voltage with a reference voltage. The inhibitor inhibits an operation of the discharge lamp lighting device when the comparer determines that a mis-wiring of the source of electrical power to the discharge lamp lighting device exists.

REFERENCES:
patent: 6657400 (2003-12-01), Konopka et al.
patent: 2002/0118497 (2002-08-01), Petruska
patent: 2007/0188955 (2007-08-01), Elms

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