System for transmitting stereophonic signals over electric power lines
First Claim
1. A COUPLING AND LOADING DEVICE FOR IMPRESSING STEREOPHONIC SIGNALS ON ELECTRIC POWER LINES WHICH COMPRISES A POWER SUPPLY CIRCUIT, FIRST AND SECOND AUDIO SIGNAL CHANNELS, MEANS FOR MODULATING THE FIRST CHANNEL ON A FIRST CARRIER WAVE AND THE SECOND CHANNEL ON A SECOND CARRIER WAVE, A POWER TRANSFORMER FOR SUPPLYING ENERGY FROM SAID POWER CIRCUIT TO SAID CHANNELS, OUTPUT TRANSFORMERS FOR SAID CHANNELS EACH HAVING A PRIMARY WINDING AND A SECONDARY WINDING, MEANS CONNECTING SAID SECONDARY WINDINGS OF SAID OUTPUT TRANSFORMERS IN SERIES WITH ONE ANOTHER AND WITH THE PRIMARY WINDING OF SAID POWER TRANSFORMER, AND MEANS FOR BYPASSING RADIO FREQUENCY ENERGY TO GROUND AROUND SAID POWER TRANSFORMER AT BOTH TERMINALS OF SAID POWER TRANSFORMER PRIMARY WINDING.
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1 Claim
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1. A COUPLING AND LOADING DEVICE FOR IMPRESSING STEREOPHONIC SIGNALS ON ELECTRIC POWER LINES WHICH COMPRISES A POWER SUPPLY CIRCUIT, FIRST AND SECOND AUDIO SIGNAL CHANNELS, MEANS FOR MODULATING THE FIRST CHANNEL ON A FIRST CARRIER WAVE AND THE SECOND CHANNEL ON A SECOND CARRIER WAVE, A POWER TRANSFORMER FOR SUPPLYING ENERGY FROM SAID POWER CIRCUIT TO SAID CHANNELS, OUTPUT TRANSFORMERS FOR SAID CHANNELS EACH HAVING A PRIMARY WINDING AND A SECONDARY WINDING, MEANS CONNECTING SAID SECONDARY WINDINGS OF SAID OUTPUT TRANSFORMERS IN SERIES WITH ONE ANOTHER AND WITH THE PRIMARY WINDING OF SAID POWER TRANSFORMER, AND MEANS FOR BYPASSING RADIO FREQUENCY ENERGY TO GROUND AROUND SAID POWER TRANSFORMER AT BOTH TERMINALS OF SAID POWER TRANSFORMER PRIMARY WINDING.
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Current AssigneeCharles R. Stradley
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Original AssigneeCharles R. Stradley
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InventorsStradley, Charles R.
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Application NumberUS04/467,377Time in Patent Office960 DaysField of SearchUS Class Current381/2CPC Class CodesH04H 20/88 Stereophonic broadcast syst...
