Discharge tube lighting apparatus

Details Discharge tube lighting apparatus Discharge tube lighting apparatus

1995-10-16

1998-04-28

Pascal, Robert

Electric lamp and discharge devices: systems

Current and/or voltage regulation

Automatic regulation

315225, 315DIG7, 315308, H05B 3702

Patent

active

057449163

ABSTRACT:
In order to detect a fault which would result in heating or fuming of a discharge tube lighting circuit and to break the lighting circuit, input voltage and current are measured and multiplied to compute the input power. The discharge tube 3 is extinguished when an input power reaches a predetermined value.

REFERENCES:
patent: 4412154 (1983-10-01), Klein
patent: 5140229 (1992-08-01), Yagi et al.
patent: 5204587 (1993-04-01), Mortimer et al.
patent: 5422548 (1995-06-01), Yamashita et al.

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