Intrinsically safe lighting system

Details Intrinsically safe lighting system Intrinsically safe lighting system

1983-05-16

1984-06-19

LaRoche, Eugene R.

Electric lamp and discharge devices: systems

With automatic shunt and/or cutout

315127, 315225, 361 93, 361111, 363 56, H05B 4129

Patent

active

044555091

ABSTRACT:
An intrinsically safe lighting system for energizing fluorescent lamps and the like in potentially flammable or explosive atmospheres is disclosed wherein one or more intrinsically safe power supply modules embody current monitoring and diverter circuitry, operable, upon the occurrence of abnormal circuit conditions such as a short or open circuit, to interrupt the lamp power supply and divert energy therefrom so rapidly that non-intrinsically safe sparking and ignition of the flammable atmosphere is avoided.

REFERENCES:
patent: 3648110 (1972-03-01), Knight
patent: 3869648 (1975-03-01), Zendle et al.
patent: 3955132 (1976-05-01), Greenwood
patent: 4135223 (1979-01-01), Holmes
patent: 4195325 (1980-03-01), Richardson et al.
patent: 4210846 (1980-07-01), Capewell et al.
patent: 4213164 (1980-07-01), Gaertner
patent: 4264950 (1981-04-01), Bockhorst et al.

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