The Alternator in a Car

The Alternator in a car generates power for all the electrical equipment in the car.  The Alternator is driven 
by the engine by means of a belt known as the serpentine belt.  The belt drives the shaft of the alternator.  

The rotor of the Alternator contains the field windings.  The field windings are excited by a Voltage regulator. 

The exciting supply to the field windings is through slip rings.  This supply is taken from the batteries.  The 
power is generated on the stator of the alternator which makes evacuation easier.  

The output of the Alternator is AC.  This AC supply is converted into DC by means of diodes.  The DC supply is used to charge the battery and to supply power to all the electrical fitments in the car.