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Airfield lighting system

  • US 5,969,642 A
  • Filed: 09/30/1996
  • Issued: 10/19/1999
  • Est. Priority Date: 05/06/1993
  • Status: Expired due to Term
First Claim
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1. An airfield lighting system, said system comprising:

  • (a) an electrical circuit, said circuit adapted to conduct a current and a control electrical signal, and comprising a plurality of transformers connected in series, each of said transformers adapted to energize at least one airfield light, said electrical circuit additionally comprising a low pass filter disposed between a master control module and a constant current regulator, said low pass filter comprising a pair of inductors disposed in series on either side of said circuit, and at least one capacitor connected across said circuit and connecting at points disposed between each of said pair of inductors;

    (b) a general control microprocessor;

    (c) said master control module adapted to accept a control digital signal from said general control microprocessor, to convert said control digital signal to a control electrical signal, and to send said control electrical signal through said circuit;

    (d) remote controller means connected to each of said transformers, each of said remote controller means comprising;

    (i) means to accept said control electrical signal and to convert said control electrical signal to a converted control digital signal,(ii) switching means to control said at least one airfield light, and(iii) remote controller microprocessor means adapted to process said converted control digital signal and control said switching means in accordance with said converted control digital signal; and

    (e) said constant current regulator adapted to control the current flowing through said circuit.

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