Alternator: Description and Operation

OPERATION
With voltage applied, the regulator is activated, allowing current to flow from sense "A" circuit to the generator field coil.

The generator generates an AC output which is converted to a DC output by a rectifier assembly internal to the alternator, and is supplied to vehicle through the "B+" terminal.

Stator "S" circuit is used to feed back a voltage signal from generator to regulator, this voltage (typically half battery voltage) is used by the regulator to turn OFF the charging system dash indicator.