Ignition products [india] pvt. Ltd, an iso certified manufactures and exporter of oem equipments. Car alternator is effectively a 12 v system but also can be made of output voltages like 24v and 36v .The construction is a rugged one with least wearing parts. An electronic proportional regulator regulates the output to prevent battery from over charging, but at the same time feeding the external electrical loads. The alternator is driven by engine pulley. These are the features of the car alternators.