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What output should a generator provide?

 
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zephyrgary



Joined: 03 Aug 2007
Posts: 764
Location: cave creek,az

PostPosted: Fri Mar 17, 2017 9:12 pm    Post subject: What output should a generator provide? Reply with quote

I was testing my charging circuit on a car with a generator/dynam. Iknow you get no charge at idle, but at a lope it showed 12.7V. Is that charging? I know an alternator should show 13.5V.
Thanks
Gary
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Dave C



Joined: 24 Mar 2016
Posts: 82
Location: Pitt Meadows, B.C. Canada

PostPosted: Fri Mar 17, 2017 10:21 pm    Post subject: Reply with quote

a fully charged battery should show 12.5-12.6 volts/
Generator should show a 14.2-14.5 output.
Alternator= same...over about 14.7 you run the chance of boiling the battery.
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zephyrgary



Joined: 03 Aug 2007
Posts: 764
Location: cave creek,az

PostPosted: Fri Mar 17, 2017 11:48 pm    Post subject: Reply with quote

Thanks Dave, I appreciate the info.
Gary
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JAN



Joined: 21 Oct 2007
Posts: 126
Location: Wigan, UK

PostPosted: Sat Mar 18, 2017 2:15 am    Post subject: Reply with quote

Alternator output voltage is 14.2V +/-0.2V with headlights on. Dynamo amps output is normally a maximum of 21A, although heavy duty dynamos with an output of 25A were available. Since even a low-output alternator will put out 35A this explains why many owners have fitted them.
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zephyrgary



Joined: 03 Aug 2007
Posts: 764
Location: cave creek,az

PostPosted: Sat Mar 18, 2017 11:24 am    Post subject: Reply with quote

Thanks Jan.
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