High isolation, power-on control circuit for aircraft external p

Details High isolation, power-on control circuit for aircraft external p High isolation, power-on control circuit for aircraft external p

1995-10-31

1997-08-19

Karlsen, Ernest F.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

With rectifier

340945, 340532, 3241581, G01R 1922

Patent

active

056592434

ABSTRACT:
A power-on control circuit which functions to inhibit and prevent turn-on of an external power supply to an aircraft, unless a continuity signal is received from the aircraft indicating proper mating of the external power plug in the aircraft socket, thus preventing the hazards of an improper connection. The invention power-on control circuit incorporates a subcircuit for generating an acquisition signal to confirm continuity of connection, and a sensing and detector sub-circuit to enable turn-on of an external power source supplying power to an aircraft. The control circuit contains high ohmic isolation between logic elements and the aircraft, and is not sensitive to coupling with extraneous signals.

REFERENCES:
patent: 3840782 (1974-10-01), Monaghan
patent: 5499187 (1996-03-01), Smith

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