Data transmitting circuit

Claim 1

IN A TELEMETERING SYSTEM OF THE TYPE HAVING A PAIR OF ACTUATING MEANS AT A FIRST LOCATION, SAID ACTUATING MEANS BEING ACTUATED IN RESPONSE TO A CONDITION BEING MEASURED AT SAID FIRST LOCATION, SUCH THAT THE TIME BETWEEN ACTUATION IS PROPORTIONAL TO THE CONDITION BEING MEASURED, AND A TRANSMISSION LINE FOR TRANSMITTING TO A REMOTE LOCATION ELECTRICAL SIGNALS INDICATIVE OF SAID CONDITION, THE IMPROVEMENT COMPRISING, (A) A TRANSFORMER MEANS HAVING A PRIMARY AND A SECONDARY FOR COUPLING SIGNALS TO THE TRANSMISSION LINE, SAID SECONDARY BEING CONNECTED TO THE INPUT OF SAID TRANSMISSION LINE, THE PRIMARY OF SAID TRANSFORMER MEANS HAVING A CENTRAL TERMINAL DIVIDING THE PRIMARY INTO UPPER AND LOWER PORTIONS: (B) FIRST AND SECOND SILICON-CONTROLLED RECTIFIERS, EACH HAVING ANODE, CATHODE AND GATE TERMINALS; (C) A CAPACITOR CONNECTED TO FORM A SERIES CIRCUIT WITH THE UPPER PORTION OF SAID PRIMARY AND THE ANODE-CATHODE PATH OF SAID FIRST SILICON-CONTROLLED RECTIFIER, SAID CAPACITOR ALSO FORMING A SERIES CIRCUIT WITH THE LOWER PORTION OF SAID PRIMARY AND THE ANODE-CATHODE PATH OF SAID SECOND SILICON-CONTROLLED RECTIGIER; (D) MEANS FOR APPLYING A VOLTAGE ACROSS SAID CAPACITOR; (E) THE FIRST OF SAID ACTUATING MEANS BEING CONNECTED BETWEEN ONE TERMINAL OF SAID CAPACITOR AND THE GATE TERMINAL OF SAID FIRST SILICON-CONTROLLED RECTIFIER, WHEREBY SAID FIRST SILICONCONTROLLED RECTIFIER IS FIRED, DISCHARGING THE CHARGE ON SAID CAPACITOR THROUGH THE UPPER PORTION OF THE PRIMARY WHEN SAID FIRST ACTUATING MEANS IS ACTUATED; (F) THE SECOND OF SAID ACTUATING MEANS BEING CONNECTED BETWEEN SAID ONE TERMINAL OF SAID CAPACITOR AND THE GATE TERMINAL OF SAID SECOND SILICON-CONTROLLED RECTIFIER, WHEREBY SAID SECOND SILICON-CONTROLLED RECTIFIER IS FIRED, DISCHARGING THE CHARGE ON SAID CAPACITOR THROUGH THE LOWER PORTION OF THE PRIMARY WHEN SAID SECOND ACTUATING MEANS IS ACTUATED.