CONTROL UNIT OF GENERATOR FOR VEHICLE

摘要

PURPOSE:To suppress the rotating speed fluctuation at idle rotation by gradually increasing the output current of a generator for vehicle immediately after load is applied in accordance with an applied load capacity. CONSTITUTION:When a fan motor switch 5-1 and a headlight switch 5-2 are turned on, transistors 3-104 and 3-105 of a variable resistance circuit 3-10 are turned on while a transistor 3-6 is turned on for a fixed time. A Capacitor 3-9 discharges when the transistor 3-6 is turned on, but when it is turned off, it is charged at a time constant in proportion to the resistance value of a variable resistance circuit 3-10. A comparator 3-14 compares the charging voltage V5 of the Capacitor 3-9 with that of a Capacitor 3-16 charged and discharged at a constant cycle and outputs a pulse signal in which an ON period gradually decreases. During the ON period of this pulse signal the exciting current of a generator 1 for vehicle is forcibly interrupted.