Current sensing and control circuit

Claim 1

A CIRCUIT FOR CONTROLLING A PAIR OF OPPOSITELY ORIENTED CONTROLLED RECTIFIERS COMPRISING, A CURRENT TRANSFORMER HAVING A CORE WITH A SUBSTANTIALLY RECTANGULAR HYSTERESIS LOOP COUPLED TO THE OUTPUT OF ONE OF SAID CONTROLLED RECTIFIERS, A FIRST AND A SECOND TRANSISTOR, MEANS FOR FORWARD-BIASING SAID FIRST TRANSISTOR, MEANS INTERCONNECTING THE SECONDARY OF SAID TRANSFORMER TO SAID FIRST TRANSISTOR AND OPERATIVE TO OVERCOME SAID FORWARD-BIAS WHEN AT LEAST A PREDETERMINED MINIMUM VOLTAGE IS INDUCED IN SAID SECONDARY, TRIGGERING MEANS NORMALLY ADAPTED TO INITIATE CONDUCTION IN THE OTHER OF SAID CONTROLLED RECTIFIERS AND INHIBITED DURING NONCONDUCTION OF SAID FIRST TRANSISTOR, MEANS FOR REVERSE-BIASING SAID SECOND TRANSISTOR, AND MEANS INTERCONNECTING THE SECONDARY OF SAID TRANSFORMER TO SAID SECOND TRANSISTOR AND OPERATIVE TO OVERCOME SAID REVERSE-BIAS WHEN LESS THAN SAID PREDETERMINED MINIMUM VOLTAGE IS INDUCED IN SAID SECONDARY, THE CURRENT THROUGH SAID SECOND TRANSISTOR, WHEN CONDUCTING, BEING SUPPLIED TO SAID SECONDARY TO INCREASE THE VOLTAGE BEING GENERATED THEREIN AND TO RESET SAID CORE.