Understanding the Alternator

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Rectifier Operation

The Diode Rectifier Bridge is responsible for for the conversion or rectification the AC voltage into DC voltage.

Two diodes are connected to each stator lead. One positive the other negative.

Because a single diode will only block half the the AC voltage.

Six or eight diodes are used to rectify the AC stator voltage to DC voltage.

Diodes used in this configuration will redirect both the positive and negative polarity signals of the AC voltage to produce DC voltage. This process is called 'Full - Wave Rectification'.