Abstract:
An alternator and regulator control system includes diodes connected to the output windings of the alternator to pass unidirectional current pulses and to cause blocking of current when voltage in the output winding reverse biases the diodes. This blockage of current produces a high reverse voltage pulse in the output winding which is then delivered to the field winding of the alternator through electronic switch means to cause excitation of the alternator to develop high power output in the stator windings of the alternator. The electronic switch is a thyristor and forms part of a feedback circuit which is controlled by a voltage regulator that controls the output voltage of the alternator.
Abstract:
An indicating circuit for use in a vehicular electrical system having a DC power source and a dynamoelectric machine to supply a charging current to the DC power source. One or more indicating lamps are provided to give visual indication of the various operating conditions of the dynamoelectric machine to indicate failure of an alternator or regulator components or to indicate below normal, normal, and above normal voltage outputs therefrom. Where two or more indicating lamps are used, they are controlled by voltage differential amplifiers having gated outputs therefrom connected to a third amplifier. The third amplifier control energization of the indicating lamp which indicates the normal voltage output of the dynamoelectric machine, and energization of either of the two voltage differential amplifier circuits will render the third amplifier inoperative by a signal through the associated gate circuit.
Abstract:
The hydraulic power source of a motor vehicle for supplying hydraulic power to operate a power steering mechanism or other hydraulic equipment of the vehicle is also utilized to drive a hydraulic motor, which in turn is coupled to an alternator through a direct mechanical drive, thereby eliminating the driving belt normally utilized to operate the alternator of the vehicle. The alternator operates as a current source to charge the vehicle battery. The hydraulic system provides sufficient pressure to drive the alternator at its full output even for an idling engine. When electrical power is not required by the system, the fluid supply powering the motor which drives the alternator may be shut off automatically, thereby extending the system life.
Abstract:
A voltage regulator for brushless alternators including an oscillator circuit which has the output thereof fed into stationary, primary winding of a rotary transformer device which has a rotatable secondary winding secured to the rotor shaft of the alternator. The oscillator is a free running, square wave multivibrator with cross coupling means between the output of one transistor stage thereof to the input of the other transistor stage. The oscillator operates at a frequency within a given range of frequencies dependent on load conditions, and the output of the oscillator is controlled by a voltage sensor between fully on and fully off conditions to regulate the power output of the alternator.