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Automotive alternator windings & rectifier

M

Mike Cook

http://www.autoshop101.com/forms/alt_bwoh.pdf

has photos of an alternator with 4 connections for windings (each of 3 phases
+ common), and the 8 diode rectifier. But wiring diagrams show only 3
connections and 6 diodes.

Where does the common winding terminal connect (there is a connection on the
rectifier plate)? Where do the other 2 diodes connect?

I handled one of these disassembled units but didn't have time to ohm out the
connections.

Thanks.
 
J

Jasen Betts

http://www.autoshop101.com/forms/alt_bwoh.pdf

has photos of an alternator with 4 connections for windings (each of 3 phases
+ common), and the 8 diode rectifier. But wiring diagrams show only 3
connections and 6 diodes.

Where does the common winding terminal connect (there is a connection on the
rectifier plate)? Where do the other 2 diodes connect?

I handled one of these disassembled units but didn't have time to ohm out the
connections.

Thanks.


common to the chassis
3 big diodes to battery positive
3 small diodes to the altenator regulator
another small diode between the regulator and the altenator light,

eigth diode, dunno.
 
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