Sequential switching system

Claim 1

AN ELECTRICAL SWITCHING SYSTEM COMPRISING A STANDBY TRANSISTOR CIRCUIT WITH A LOAD IMPEDANCE CONNECTED TO A D.C. POWER SUPPLY SOURCE, SAID TRANSISTOR CIRCUIT BEING PROPORTIONED TO NORMALLY CONDUCT A PREDETERMINED CURRENT THROUGH SAID IMPEDANCE, A PAIR OF CONTROL TRANSISTORS, OUTPUT TRANSFORMER MEANS HAVING TWO PRIMARY WINDINGS EACH IN CIRCUIT WITH LIKE ELECTRODES OF SAID TRANSISTORS PAIR, A SECOND LIKE SET OF ELECTRODES OF SAID TRANSISTOR PAIR BEING COUPLED TO SAID IMPEDANCE FOR CONTROL SIGNAL ACTUATION THEREBY UPON CURRENT REDUCTION CONDITION OF SAID STANDBY TRANSISTOR CIRCUIT, BISTABLE MEANS COUPLED TO THE THIRD ELECTRODES OF SAID TRANSISTOR PAIR FOR ALTERNATELY SWITCHING THE CAPABILITY OF CURRENT PASSAGE THROUGH THE TRANSTORS OF SAID PAIR, AND CONTROL MEANS IN CIRCUIT WITH SAID STANDBY TRANSISTOR FOR IMPRESSING CONTROL SIGNALS TO SUBSTANTIALLY REDUCE THE STANDBY CURRENT THERETHROUGH IN CORRESPONDENCE THEREWITH AND EFFECT REDIRECTION OF THE STANDBY TRANSISTOR CIRCUIT CURRENT INTO SAID TRANSFORMER WINDINGS THROUGH THE ASSOCIATED ALTERNATELY OPERABLE TRANSISTOR OF SAID PAIR, WHEREBY THE TRANSISTORS OF SAID PAIR EFFECTIVELY SHARE THE LOAD OF THE OUTPUT CONTROL OPERATION.