VOLTAGE CONTROL DEVICE OF GENERATOR FOR VEHICLE

摘要

PROBLEM TO BE SOLVED: To protect a voltage control device 1 even under the abnormal condition where a high voltage is applied directly to the input terminal L of the voltage controller 1. SOLUTION: The voltage controller 1 of a generator 2 for vehicle has an input terminal L receiving the voltage of a battery 5 through ignition switches 3 connected in series and a light emitting element (a light emitting diode 4) operating with low power consumption and excitation of the rotor coil 201 of the generator 2 for vehicle is started when the voltage at the input terminal L exceeds a given level. A resistor 115 for limiting the current flowing through the light emitting diode 4 is interposed between a light emitting diode driving element 114 in the voltage controller 1 and the input terminal L.