VOLTAGE REGULATOR FOR CHARGING GENERATOR

摘要

Disclosed is a voltage regulator for an a.c. charging generator. The regulator consists of a rectifier for converting the a.c. output of the generator to d.c. A battery will be connected to the output of the rectifier. The regulator includes comparison means for comparing the battery voltage with a reference voltage and a power transistor controlled by the output of the comparison means for controlling the current flowing through a field coil of the a.c. generator. The reference voltage generation circuit comprises a voltage divider connected to a constant voltage power source to provide its divided voltage as the reference voltage. A plurality of transistors is connected in parallel with a part of the voltage divider. A conduction control circuit controls the transistors in accordance with the ambient temperature, so that the reference voltage is determined in accordance with such temperature. The result is a voltage regulator of simple construction that exhibits better temperature characteristics than hitherto available.