Current and voltage regulator

Claim 1

IN AN ELECTRICAL SUPPLY SYSTEM, A DIRECT CURRENT GENERATOR HAVING AN OUTPUT TERMINAL AND A FIELD WINDING, A PAIR OF D.C. LOAD LEADS CONNECTED IN CIRCUIT WITH SAID OUTPUT TERMINALS, A UNIPOLAR TRANSISTOR CONNECTED IN SERIES WITH SAID FIELD ACROSS SAID LEADS AND HAVING A CONTROL JUNCTION, A RECTIFIER AND RESISTANCE CONNECTED IN SERIES ACROSS SAID LEADS, SAID RECTIFIER BEING CONNECTED TO OPPOSE CURRENT FLOW FROM THE HIGHER VOLTAGE LEAD TO THE LOWER AND HAVING A BREAKDOWN VOLTAGE LESS THAN CERTAIN VOLTAGES APPLIED TO SAID LEADS BY THE GENERATOR, MEANS CONNECTING THE CONTROL JUNCTION OF THE TRANSISTOR TO A POINT INTERMEDIATE THE RECTIFIER AND RESISTANCE TO CONTROL THE FLOW THROUGH THE TRANSISTOR IN RESPONSE TO THE VOLTAGE BETWEEN SAID LEADS, AND MEANS INCLUDING A RESISTANCE, A PAIR OF TRANSISTORS AND A RECTIFIER CONNECTED TO SAID CONTROL JUNCTION AND SAID LEADS FOR CONTROLLING THE FLOW OF CURRENT THROUGH SAID TRANSISTOR IN RESPONSE TO CURRENT FLOW IN SAID LEADS.