Patent ID: 6590367
Filing Date: 2003-07-08
Classification: H02J

Abstract:
In an external type regulator for a vehicle alternator which includes a charge lamp controller for controlling a turning on/off operation of a charge lamp, and a voltage adjusting unit for constantly adjusting an output voltage of the alternator, the external type regulator for a vehicle alternator, comprising:an over charge disconnector which includes: a dividing resistor for dividing a voltage inputted through an IG terminal; a zenor diode which is turned off in the case that the voltage divided by the dividing resistor is higher than a zenor voltage, for thereby detecting an over charge of an alternator which occurs in an IG terminal; first and second transistors which are turned on when the zenor diode detects an over charge and is turned on and output a relay driving signal; a relay which has a contact point terminal connected between a power transistor and a field coil of the voltage adjusting unit and is switch-driven in response to a relay driving signal when the first transistor is turned on, for thereby disconnecting a field current flowing between the power transistor and the field coil; and a plurality of resistors, condensers and diodes, whereby said over charge disconnector stops a power generation of the alternator by detecting an over charge of the alternator and disconnecting a field current flowing in the field coil.