Apparatus for determining output current versus speed of a generator having variable impedance load means for controlling generator output voltage

Claim 1

AN ELECTRICAL CIRCUIT FOR MAINTAINING A SUBSTANTIALLY CONSTANT TERMINAL VOLTAGE ON AN ELECTRICAL GENERATOR COMPRISING, A ZENER DIODE, A DIRECT CURRENT AMPLIFIER HAVING OUTPUT TERMINALS CONNECTED ACROSS THE ELECTRICAL GENERATOR AND AN INPUT CIRCUIT ELECTRICALLY COUPLED TO THE ELECTRICAL GENERATOR, SAID ZENER DIODE BEING POLED TO PREVENT CONDUCTION OF SAID DIRECT CURRENT AMPLIFIER WHEN THE TERMINAL VOLTAGE OF THE ELECTRICAL GENERATOR IS BELOW A SELECTED VALUE AND TO PERMIT CONDUCTION OF SID CURRENT AMPLIFIER WHEN SAID TERMINAL VOLTAGE IS ABOVE SAID SELECTED VALUE, A VARIABLE SOLID STATE DYNAMIC LOAD CONNECTED ACROSS THE ELECTRICAL GENERATOR, SAID VARIABLE SOLID STATE DYNAMIC LOAD CARRYING SUBSTANTIALLY ALL OF THE OUTPUT CURRENT OF SAID ELECTRICAL GENERATOR, AND MEANS CONNECTING THE OUTPUT TERMINALS OF SAID DIRECT CURRENT AMPLIFIER TO SAID VARIABLE SOLID STATE DYNAMIC LOAD FOR DECREASING THE IMPEDANCE OF SAID VARIABLE SOLID STATE SHUNT LOD IF THE TERMINAL VOLTAGE OF THE ELECTRICAL GENERATOR ATTEMPTS TO INCREASE.