Charging Systems: Alternators: Description

Fiat alternators are conventional three-phase, self-rectifying type alternators. Six silicon rectifier diodes are connected to form a full-wave, three-phase rectifying bridge. The three negative rectifier diodes (identified by black wording) are pressed directly in the end frame. Three positive diodes (identified by red wording) are located in a heat sink which is insulated from the end frame.

Fig 1: Fiat Alternator

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Fig 2: Charging With Indicator Light (One Pole Grounded)

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Fig 3: Charging With Indicator Light (Both Poles Grounded)

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