Semi-conductor control systems

Claim 1

IN AN ELECTRICAL CONTROL SYSTEM, IN COMBINATION, (A) A SOURCE OF ADJUSTABLE INPUT VOLTAGE; (B) AN ELECTRICAL ENERGY STOARAGE DEVICE; (C) FIRST AND SECOND SUBSTANTIALLY CONSTANT CURRENT PASSING SEMI-CONDUCTOR MEANS, EACH SAID SEMI-CONDUCTOR MEANS COMPRISING A MAIN CONDUCTION PATH AND A REVERSE CONDUCTION PATH; (D) MEANS CONNECTING THE MAIN CONDUCTION PATH OF SAID FIRST SEMI-CONDUCTOR MEANS AND THE REVERSE CONDUCTION PAT OF SAID SECOND SEMI-CONDUCTOR MEANS IN SERIES WITH SAID ENERGY STORAGE DEVICE ACROSS SAID SOURCE, SAID FIRST SEMI-CONDUCTOR MEANS BEING EFFECTIVE TO CONTROL CONDUCTION OF A PREDETERMINED CONSTANT CURRENT FROM SAID INPUT SOURCE TO SAID ENERGY STORAGE DEVCE LINEARLY TO INCREASE THE VOLTAGE ACROSS SAID ENERGY STORAGE DEVICE, AND THE IMPEDANCE OF SAID REVERSE CONDUCTION PATH OF SAID SECOND SEMICONDUCTOR MEANS BEING SUBSTANTIALLY NEGLIBLE WHEREBY SAID CURRENT FLOW THERETHROUGH TO SAID ENERGY STORAGE DEVICE IS NOT AFFECTED BY SAID SECOND SEMI-CONDUCTOR MEANS; (E) MEANS CONNECTING THE MAIN CONDUCTION PATH OF SAID SECOND SEMI-CONDUCTOR MEANS AND TE REVERSE CONDUCTION PATH OF SAID FIRST SEMI-CONDUCTOR MEANS IN SERIES WITH SAID SOURCE ACROSS SAID ENERGY STORAGE DEVICE, SAID SECOND SEMI-CONDUCTOR MEANS BEING EFFECTIVE WHEN SAID INPUT VOLTAGE IS ADJUSTED TO A VALUE BELOW THE VOLTAGE ACROSS SAID ENERGY STORAGE DEVICE TO CONTROL DISCHARGE OF SAID ENERGY STORAGE DEVICE AT A PREDETERMINED CONSTANT CURRENT VALUE LINEARLY TO DECREASE THE VOLTAGE ACROSS SAID ENERGY STORAGE DEVICE, AND THE IMPEDANCE OF SAID REVERRSE CONDUCTION PATH OF SAID FIRST SEMI-CONDUCTOR MEANS BEING SUBSTANTIALLY NEGLIGIBLE WHEREBY SAID DISCHARGE CURRENT FLOW THERETHROUGH IS NOT AFFECTED BY SAID FIRST SEMICONDUCTOR MEANS; (F) AND MEANS FOR DISCONNECTING SAID SOURCE AND FOR CONNECTING THE MAIN CONDUCTION PATH OF SAID SECOND SEMI-CONDUCTOR MEANS AND THE REVERSE CONDUCTION PATH OF SAID FIRST SEMI-CONDUCTOR MEANS IN SERIES ACROSS THE ENERGY STORAGE DEVICE TO CONDUCT CURRENT FLOW FROM THE LATTER THEREBY TO CAUSE THE VOLTAGE ACROSS SAID ENERGY STORAGE DEVICE TO DECREASE AT A LINEAR RATE.