Circuit for controlling a display panel

Details Circuit for controlling a display panel Circuit for controlling a display panel

1986-05-02

1988-07-05

Levy, Stewart J.

Communications: electrical

Condition responsive indicating system

With particular system function

340 52F, G08B 2500

Patent

active

047557982

ABSTRACT:
A circuit for controlling a display panel identifying malfunctions in an engine generator receives a plurality of electrical signals from the engine generator, each of which identifies a particular trouble. The electrical signal may be produced by closing a switch. It is caused to operate a latch that lights a light associated with the particular malfunction. Indications of other malfunctions are suppressed until the circuit is reset. A manual reset tests all lights and then leaves them off ready to respond. A power-up reset does not test lights but leaves all lights off ready to respond. The circuit is rendered especially appropriate for military use by hardening against radiation and against pulses of electromagnetic interference.

REFERENCES:
patent: 3872473 (1975-03-01), Melgaard et al.
patent: 3960011 (1976-06-01), Renz et al.
patent: 4223303 (1980-09-01), Hocking
patent: 4443784 (1984-04-01), Franzen et al.
patent: 4489305 (1984-12-01), Lang et al.
Joe Davis, Circuit Indicates First Fault.
Paul C. Donatelli, A Microprocessor Based Fault Finder, Conference Record of Industry Applications Society IEEE, 1981 Meeting, Phila., PA.

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