Output voltage control apparatus for vehicular AC generator, has control unit determining, based on final count value in each control period, ON period of controlled time width in next control period

摘要

The apparatus has a control unit (20) with a voltage detection circuit that detects a generator output voltage and outputs a detection voltage including a ripple component. A comparison circuit (43) compares the detection voltage with a reference voltage. An ON period counter counts up a count value while adding the count value in each low output section based on the comparison. A memory unit stores a final count value, and the control unit determines, based on the final count value in each of the control periods, the ON period of a controlled time width in a next control period.