Electronic switching system

Claim 1

IN COMBINATION, TWO UNIDIRECTIONAL CURRENT CONTROL DEVICES EACH INCLUDING AN ANODE, A CATHODE, AND A GATE, A LOAD IN SERIES WITH EACH OF SAID CONTROL DEVICES, A PAIR OF INPUT TERMINALS ADAPTED TO RECEIVE AN OPERATING POTENTIAL CONNECTED ACROSS SAID SERIES-CONNECTED LOADS AND CONTROL DEVICES TO FORM TWO PARALLEL BRANCHES, SAID INPUT TERMINALS ENERGIZING THE ANODE OF EACH CONTROL DEVICE WITH A POSITIVE POTENTIAL, A MAGNETIC MATERIAL DEVICE HAVING SUBSTANTIALLY RECTANGULAR HYSTERESIS LOOP CHARACTERISTICS, A WINDING ON SAID MAGNETIC MATERIAL DEVICE, ASYMMETRIC CONDUCTOR MEANS IN EACH BRANCH CONNECTED TO THE TERMINALS OF SAID WINDING AND TO THE ANODES OF SAID CONTROL DEVICES FOR ISOLATING THE ANODES OF SAID CONTROL DEVICES FROM POTENTIAL DROPS ACROSS SAID WINDING, MEANS FOR CROSS-CONNECTING THROUGH SAID ASYMMETRIC CONDUCTOR MEANS THE GATE OF EACH OF SAID CONTROL DEVICES AND THE ANODE OF THE OTHER CONTROL DEVICE, ONE OF SAID CROSS-CONNECTING MEANS INCLUDING A DELAY ELEMENT EFFECTIVE UPON INITIAL ENERGIZATION OF SAID INPUT TERMINALS TO DELAY CONDUCTION OF THE CONTROL DEVICE HAVING SAID DELAY ELEMENT IN ITS GATE CIRCUIT WHEREBY THE OTHER OF SAID CONTROL DEVICES CONDUCTS FIRST, EACH OF SAID CONTROL DEVICES DURING CONDUCTIONS ENERGIZING THE LOAD IN SERIES ASSOCIATION THEREWITH AND DURING CUTOFF DIRECTING A MAGNETIZING FORCE FROM SAID INPUT TERMINALS TO SAID WINDING IN SUCH MANNER AS TO PLACE SAID MAGNETIC MATERIAL DEVICE IN A SATURATION CONDITION IN ACCORDANCE WITH THE MAGNETIZING CURRENT DIRECTION, AND MEANS FOR STOPPING THE CONDUCTION OF EACH OF SAID CONTROL DEVICES UPON THE STARTING OF CONDUCTION IN THE OTHER OF SAID CONTROL DEVICES WHEREBY THEIR ALTERNATE OPERATION IS EFFECTED.