Microcomputer driven fail-safe device with short circuit detecti

Details Microcomputer driven fail-safe device with short circuit detecti Microcomputer driven fail-safe device with short circuit detecti

1984-02-15

1986-05-06

Moose, Jr., Harry E.

Electricity: electrical systems and devices

Safety and protection of systems and devices

With specific current responsive fault sensor

361 96, 361 97, 364483, H02H 3093

Patent

active

045875901

ABSTRACT:
A fail-safe device for removing power from controlled circuitry upon the occurrence of an undesired operating condition is disclosed. The fail-safe device includes means for detecting a short circuit in the controlled circuitry and for indicating the existence of an undesired operating condition if a short is detected. The fail-safe device further includes a non-volatile memory for retaining data through a power outage so that the existence of an undesired operating condition is remembered upon return of the power. The data stored in the non-volatile memory may also be useful in investigating an accident or malfunction. The fail-safe device still further includes a reset button which returns power after an undesired operating condition if it is momentarily depressed.

REFERENCES:
patent: 4395224 (1983-07-01), Cade
patent: 4395638 (1983-07-01), Cade
patent: 4398233 (1983-08-01), Bala et al.
patent: 4419619 (1983-12-01), Jindrick et al.
patent: 4439804 (1984-03-01), Riddle et al.
patent: 4466074 (1984-08-01), Jindrick et al.

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