Patent ID: 6696820
Filing Date: 2004-02-24
Classification: H02P

Abstract:
A circuit configuration for controlling the field current of an alternating current generator adapted for use in a vehicle electrical generator system, the circuit configuration comprising:a digital to analog converter to convert a digital command signal to an analog voltage; a first comparator for comparing the system field current with the converted analog voltage; a switched component operatively connected to a power switch and switchable in response to the comparator output; a frequency generator operatively connected to the switched component and providing timed pulses to periodically tell the switched component to turn on the power switch; a second comparator for comparing a sensed voltage, where voltage regulation is required, with a reference voltage; an up/down counter for converting the over/under signal from the comparator to said digital command signal; a frequency generator to increment the up/down counter; and a supervisory control circuit operatively connecting said up/down counter, said generator field and phase signals, and an ignition input to power up and power down said generator.