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What output should a generator provide?
Posted: Fri Mar 17, 2017 9:12 pm
by zephyrgary
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
Posted: Fri Mar 17, 2017 10:21 pm
by Dave C
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.
Posted: Fri Mar 17, 2017 11:48 pm
by zephyrgary
Thanks Dave, I appreciate the info.
Gary
Posted: Sat Mar 18, 2017 2:15 am
by JAN
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.
Posted: Sat Mar 18, 2017 11:24 am
by zephyrgary
Thanks Jan.