Guru
Joined: 03/01/2018
Location: AustraliaPosts: 1128
| Posted: 10:59pm 06 Aug 2020 |
Hi,
I don't want to ruffle anyone's feathers but a 12V alternator WILL produce more than the 13.8V or whatever the manufacturers decide is good for our batteries.
I have a 12V alternator with a home built external regulator connected to an engine producing 42V for a 36V system.
The field still has to run from a 12V supply to limit the current which the regulator controls.
(I did mention this system in another post many moons ago when this subject previously came up.)
My in initial setup had a fairly high pulley ratio & I got the rated current out of it. I've since relocated the alternator & had to lower the pulley ratio with a subsequent reduction in the 42V O/P current.
The only thing I am sort of worried about is the voltage ratings of the main diodes if the voltage is taken too high. There maybe other factors I haven't considered or really worried about.
With my initial setup, the load was only intermittently high, so it was never tested for continuous operation.
Now what did I do with the circuit?
Brian