An alternator is an electromechanical device that converts mechanical energy to alternating current electrical energy.
Alternators are used in automobiles to charge the battery and to power a car's electric system when its engine is running.
An alternator is very efficient at producing a constant, high voltage, even when the car is idle, because of how it works. The belt (from the crankshaft) connects to a pulley system, called the rotor, such that when the belt is turning, it moves magnets across a special surface, called a conductor. Moving magnets, in the stator, generate an electrostatic field, otherwise known as electricity. This alternating current is controlled by a voltage regulator to keep the voltage steady. Another part, called the diodes, convert alternating current into direct current that flows on to the battery and other components.
Save BIG on Alternator & Starter System from Invasion Auto Products.