Device for monitoring lamp failure in airport navigation lightin

Details Device for monitoring lamp failure in airport navigation lightin Device for monitoring lamp failure in airport navigation lightin

1979-06-28

1981-10-27

Tokar, Michael J.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Frequency of cyclic current or voltage

324133, G01R 3102

Patent

active

042976324

ABSTRACT:
A device for monitoring lamp failure in an airport landing-light system in which a first sample-and-hold memory picks up the value of the current flowing in the circuit and a second sample-and-hold memory picks up the value of the voltage at the instant the current reaches the extreme value. In the time interval between current value extremes, a determination of failed lamps is made.

REFERENCES:
patent: 4013947 (1977-03-01), Arai
patent: 4019128 (1977-04-01), Chesbowski
patent: 4037220 (1977-07-01), Beyersdorf

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