Circuit for detecting the failure of a load which is connected i

Details Circuit for detecting the failure of a load which is connected i Circuit for detecting the failure of a load which is connected i

1992-12-31

1993-11-30

Gaffin, Jeffrey A.

Electrical transmission or interconnection systems

Switching systems

Condition responsive

307 108, 315 82, 315131, 340642, H01J 100

Patent

active

052668401

ABSTRACT:
A circuit for detecting the non-operating condition of a load which is connected in series with an electronic switch wherein a comparator has a first input which is connected to the junction point between the load and the electronic switch and has a second input which is a reference voltage such that when the load fails the comparator produces an output to indicate such condition and wherein the reference voltage is lower than the normal voltage when the load is operating properly and is higher than when the load is in the inoperative condition.

REFERENCES:
patent: 3728705 (1973-04-01), Atkins
patent: 4173750 (1979-11-01), Riba
patent: 4190830 (1980-02-01), Bell
patent: 4686423 (1987-08-01), Eydt
patent: 4745339 (1988-05-01), Izawa et al.

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