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Communication network

  • US 4,937,811 A
  • Filed: 02/24/1989
  • Issued: 06/26/1990
  • Est. Priority Date: 02/24/1989
  • Status: Expired due to Term
First Claim
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1. A communication network for transmitting data comprising:

  • a master controller;

    a slave control;

    means for transformer coupling said master controller to said data path;

    means for transformer coupling said slave control to said data path;

    means for applying a DC voltage between taps provided in the master controller transformer coupling means when the master controller is energized;

    means for detecting said DC voltage between corresponding taps provided in the slave control transformer coupling means and producing a responsive control signal; and

    means for energizing the slave control in response to said control signal.

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