Current responsive signaling system

Claim 1

IN A CIRCUIT ADAPTED TO ENERGIZE AN ANCILLARY CIRCUIT, THE COMBINATION OF A POWER CIRCUIT SECTION, A LOAD CURRENT RESPONSIVE CIRCUIT SECTION INCLUDING VARIABLE IMPEDANCE MEANS THE IMPEDANCE OF WHICH IS RESPONSIVE TO THE OUTPUT CURRENT OF SAID POWER CIRCUIT SECTION, VARIABLE CURRENT LOAD SIMULATING MEANS, MEANS FOR CONNECTING SAID VARIABLE CURRENT MEANS TO SAID VARIABLE IMPEDANCE MEANS TO VARY THE IMPEDANCE THEREOF AND THE MAGNITUDE OF THE CURRENT THROUGH SAID LOAD CURRENT RESPONSIVE CIRCUIT SECTION INDEPENDENTLY OF CURRENT FLOW IN SAID POWER CIRCUIT SECTION, CURRENT RESPONSIVE MEANS ARRANGED TO RESPOND TO CURRENT FLOW IN SAID LOAD CURRENT RESPONSIVE SECTION, A SENSING CIRCUIT, AN ANCILLARY CIRCUIT, A SOURCE OF POWER FOR SAID ANCILLARY CIRCUIT, VOLTAGE SENSITIVE CONDUCTING MEANS FOR CONNECTING SAID SENSING CIRCUIT BETWEEN SAID CURRENT RESPONSIVE MEANS AND SAID SOURCE OF POWER TO ENERGIZE SAID ANCILLARY CIRCUIT WHEN A PREDETERMINED CURRENT IN SAID CURRENT RESPONSIVE CIRCUIT SECTION IS ATTAINED.