Normally on led coulometric timing system

Electrical transmission or interconnection systems – Personnel safety or limit control features – Interlock

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Details

307297, 307293, 324 94, H03K 342, G01R 2722

Patent

active

040151506

ABSTRACT:
A coulometric timing system having a source of supply with a coulometric timing circuit coupled to a cathode and an anode terminal of a coulometric cell for providing current flow for the electrolytic erosion of the anode filament. An LED is coupled in series circuit with the filament. Regulating diode means is coupled in parallel with the series circuit and to the source of supply for extinguishing the LED when the filament opens.

REFERENCES:
patent: 3090915 (1961-05-01), Soussloff et al.
patent: 3355731 (1967-11-01), Jones
patent: 3955124 (1976-05-01), Jones

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