Voltage regulating arrangement

Claim 1

IN COMBINATION WITH A UTILIZATION CIRCUIT ARRANGEMENT HAVING A PAIR OF TERMINALS COUPLED TO A FIRST DIRECTCURRENT SUPPLY SOURCE, WITH MEANS INCLUDED IN THE UTILIZATION CIRCUIT ARRANGEMENT TO SELECTIVELY COUPLE A SECOND DIRECT-CURRENT SUPPLY SOURCE TO SAID TERMINALS BY WAY OF CIRCUIT ELEMENTS, WITH THE POLES OF LIKE POLARITY OF THE TWO SAID DIRECT-CURRENT SUPPLY SOURCES COUPLED RESPECTIVELY TO THE SAME TERMINALS OF SAID PAIR, THE SECOND DIRECT-CURRENT SUPPLY SOURCE HAVING A POTENTIAL GREATER THAN THAT OF THE FIRST DIRECT-CURRENT SUPPLY SOURCE, THERE BEING EFFECTIVELY A HIGH SERIES IMPEDANCE ON THE FIRST-SUPPLY-SOURCE SIDES OF SAID TERMINALS TO CURRENT FLOWING IN A REVERSE DIRECTION CORRESPONDING TO A TRANSFER OF POWER FROM THE SECOND DIRECT-CURRENT SUPPLY SOURCE TOWARD THE FIRST DIRECT-CURRENT SUPPLY SOURCE SO THAT IN RESPONSE TO THE COUPLING BY THE UTILIZATION CIRCUIT ARRANGEMENT OF THE SECOND DIRECT-CURRENT SUPPLY SOURCE TO SAID TERMINALS THE POTENTIAL AT SAID TERMINALS TENDS TO RISE ABOVE SAID NOMINAL VALUE; APPARATUS COMPRISING VARIABLE IMPEDANCE MEANS CONNECTED IN SHUNT ACROSS SAID TERMINALS, AND CONTROL MEANS CONNECTED TO SENSE THE SHUNT POTENTIAL ACROSS SAID TERMINALS AND IN RESPONSE TO AN INCREASE IN SAID POTENTIAL ABOVE SAID NOMINAL VALUE TO SUPPLY A CONTROL SIGNAL TO REDUCE THE IMPEDANCE OF THE VARIABLE IMPEDANCE MEANS, THEREBY TO ABSORB POWER AND TO DECREASE THE POTENTIAL AT SAID TERMINALS TOWARDS SAID NOMINAL VALUE, IRRESPECTIVE OF WHETHER THE CAUSE OF THE POTENTIAL RISE AND THE SOURCE OF THE POWER IS THE FIRST SUPPLY SOURCE, OR THE UTILIZATION CIRCUIT ARRANGEMENT HAS COUPLED THE SECOND SUPPLY SOURCE TO CAUSE THE CURRENT TO REVERSE AND POWER TO FLOW FROM THE SECOND SUPPLY SOURCE THROUGH SAID CIRCUIT ELEMENTS TO SAID TERMINALS; THE ONLY CONTROL SENSING MEANS BETWEEN SAID FIRST DIRECT-CURRENT SUPPLY SOURCE AND SAID TERMINALS BEING ELEMENTS IN CIRCUITS CONNECTED IN SHUNT ACROSS SAID TERMINALS.