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Car alternator

Car alternator.

Car alternator consists of triphase stator, single (field) coil rotor , diode trio and full wave triphase diode rectifier. New car alternators don't use diode trio but ignition switch to battery plus (rectifier plus).

Conceptual shematics of the regulator

If the voltage goes higher then 14V regulator turns off field coil current (turns off rotor).