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Multi-channel carrier current control system

  • US 3,211,111 A
  • Filed: 08/24/1960
  • Issued: 10/12/1965
  • Est. Priority Date: 08/24/1960
  • Status: Expired due to Term
First Claim
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1. A SYSTEM FOR CONTROLLING THE OPERATION OF A PLURALITY OF LOADS THAT RECEIVE POWER FREQUENCY ELECTRICAL ENERGY FROM A COMMON TRANSMISSION LINE COMPRISING AN ELECTRICAL POWER SUPPLY AT LEAST ONE SIGNAL GENERATOR CONNECTED TO SAID POWER SUPPLY AND ADAPTED TO BE CONNECTED TO THE TRANSMISSION LINE, SAID GENERATOR BEING ADAPTED TO GENERATE SIGNALS AT A PREDETERMINED RADIO FREQUENCY, MANUALLY VARIABLE OPERABLE MEANS HAVING AN ON POSITION AND AN OFF POSITION CONNECTED TO SAID GENERATOR FOR DECREASING THE MAGNITUDE OF THE VOLTAGE APPLIED TO SAID GENERATOR FROM SAID POWER SUPPLY WHEN SAID VARIABLE MEANS IS TURNED OFF, AUTOMATIC MEANS CONNECTED TO SAID GENERATOR FOR GRADUALLY DECREASING THE MAGNITUDE OF THE VOLTAGE APPLIED TO SAID GENERATOR WHEN SAID VARIABLE MEANS IS TURNED OFF, AT LEAST A FIRST RADIO FREQUENCY SIGNAL RECEIVER ADAPTED TO BE CONNECTED TO THE TRANSMISSION LINE, SAID FIRST RECEIVER BEING RESPONSIVE ONLY TO THE SIGNALS GENERATED BY SAID FIRST GENERATOR, THE OUTPUT OF SAID FIRST RECEIVER BEING CONNECTED TO VARY THE CURRENT FLOW FROM THE TRANSMISSION LINE TO A LOAD IN ACCORDANCE WITH VARIATIONS IN THE AMPLITUDE OF THE SIGNALS GENERATED BY SAID FIRST GENERATOR.

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