05/13/2025
- Understanding Your Vehicle -
The alternator produces a type of electricity known as AC or alternating current, which is why itβs called an alternator. With AC electricity, the current of electrons flows forwards and backwards constantly.
However, all the electrical components within the car use another type of electricity known as DC or direct current. With this type of electricity, the electrons flow in just one direction, this is the same as the electricity you get from a battery.
So the alternator converts the Alternating current into direct current via a rectifier. The output voltage of the alternator varies with the speed of the car, so the alternator also uses a regulator to limit this and maintain a near constant output.
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