Abstract: The present invention features a voltage-limiting regulator for use with an AC generator having DC-excited fields. The AC output voltage from the generator is sensed and compared to a fixed reference representative of the sensed difference is amplified and applied to the DC field excitation input of the AC generator. As the DC voltage supplied to the field varies, the AC output voltage from the generator may be held constant under varying load conditions. The voltage-limiting regulator is particularly useful for vehicle-mounted, high power, single phase AC generators.

Abstract: The present invention features a voltage-limiting regulator for use with an AC generator having DC-excited fields. The AC output voltage from the generator is sensed and compared to a fixed reference voltage. An algebraic difference voltage representative of the sensed difference is amplified and applied to the DC field excitation input of the AC generator. As the DC voltage supplied to the field varies, the AC output voltage from the generator may be held constant under varying load conditions. The voltage-limiting regulator is particularly useful for vehicle-mounted, high power, single phase AC generators.

Abstract: Control apparatus for maintaining constant speed of an AC generator carried aboard a motor vehicle having an engine, a transmission including a power take-off, and an AC generator. The control apparatus includes a hydraulic pump driven from the power take-off, a hydraulic motor drivably connected to the generator, a fluid circuit driving the hydraulic motor from the hydraulic pump, a closed center proportional servo control valve assembly controlling the fluid circuit, and a control circuit disposed to control the proportional control valve assembly.

Abstract: The present device features a precision power coupling housing formed from a U-shaped, extruded aluminum channel. An input power source such as a motor is mounted to a first leg portion of the U-shaped channel while a load device to mounted to the second leg portion of the channel. The motor's output shaft and the load's input shaft meet in the interior region of the channel facilitating the use of a vibration damping coupling or the like between the two shafts. Bolts passing through the two leg portions of the channel and perpendicular to the two leg portions are provided to slightly adjust the parallelism of the two leg portion so as to allow precision alignment of the input and output shafts.