Device for the remote detection of a failed lamp in a lighting s

Details Device for the remote detection of a failed lamp in a lighting s Device for the remote detection of a failed lamp in a lighting s

1983-05-13

1986-04-01

Eisenzopf, Reinhard J.

Electricity: measuring and testing

Electric lamp or discharge device

Electric lamp

34081529, G01R 3124

Patent

active

045800995

ABSTRACT:
The invention basically comprises: an isolating unit in series with the power line supplying the lamp, said isolating unit automatically disconnecting when the lamp is correctly supplied; a timer; a threshold comparator; a photodetector; a magnetic unit releasing a rod which carries a flag and is arranged to permanently connect a suitable resistance in parallel with the power line, upstream the isolating unit.

REFERENCES:
patent: 2548818 (1951-04-01), Rambo
patent: 3541504 (1970-11-01), Bush
patent: 4095163 (1978-06-01), Montague

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