Generator Circuit Description

CIRCUIT DESCRIPTION

Battery Positive Voltage (B+) Output
The generator output circuit 38 (BK/O) is supplied through the battery positive voltage (B+) output connection to the battery and electrical system. The B+ circuit is hot at all times. This circuit is protected by a fuse link.

I Circuit
The I circuit, or ignition switch, circuit 904 (LG/R), is used to turn on the Voltage Regulator (VR). This circuit is closed with the ignition switch in the RUN position. This circuit is also used to turn the charge indicator lamp on if there is a fault in the charging system operation or associated wiring circuits.

A Circuit
The A circuit, or battery sense circuit, Circuit 36 (Y/W), is used to sense the battery voltage. This voltage is used by the voltage regulator to determine the output. This circuit is also used to supply power to the field coil. The A circuit is hot at all times. This circuit is protected by a fuse in the power distribution box.

S Circuit
The S circuit, or stator circuit, Circuit 4 (W/BK), is used to feedback a voltage signal from the Generator (GEN) to the voltage regulator. This voltage, typically 1/2 battery voltage when the generator is operating, is used by the voltage regulator to turn off the charge indicator lamp.