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Old 11-01-2007, 01:48 PM
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alternator help.......

I am attempting to use a GM "CS" Alternator for something completely off the wall ......
How do I get the DC voltage out of it ?
I have an electric motor turning it , and I have had it tested , it is good , but I can't even get it to power an 'idiot'light !?!!?!?!?!?!???????
What gives ?
There is a 4 pin connector on top , and the big 'batt' post on the back. When it is turning , shouldn't it put power out SOMEWHERE???? I have tried hooking up one side of the light to the casing ( ground ) and the other side (positive )to each and every one of the pins AND the batt post , but no output ....
hmmmm.
Any suggestions on how to get the DC from it ?
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Old 11-01-2007, 02:30 PM
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try this site it looks like it has the information you need http://www.alternatorparts.com/cs130_sbpage3.htm
you didn't mention how large a motor you were using and what RPM you were turning the alternator if my memory is correct it is looking for a shaft speed of 5000 RMM you will need a motor HP of 14.2 volts x amp output divided by 746= HP
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Old 11-01-2007, 03:47 PM
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You have to put electricity in to get electricity out. An alternator is basically 1 magnet turning inside another magnet. The magnets in an alternator are electro magnets so they have to have power going to them. The alternator actually creates AC voltage and the rectifier etc. inside the alternator converts that to DC voltage.
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Old 11-01-2007, 05:40 PM
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Quote:
Originally Posted by ernkazern
You have to put electricity in to get electricity out. An alternator is basically 1 magnet turning inside another magnet. The magnets in an alternator are electro magnets so they have to have power going to them. The alternator actually creates AC voltage and the rectifier etc. inside the alternator converts that to DC voltage.

tell me more , tell me more.....
that makes sense , so where do you run the power to?
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Old 11-02-2007, 05:20 AM
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Look at the site JUSTOLD sent you, that will tell you better than I could explain it.
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