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Re: Question for Bob M.
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Posted by Bob M on March 31, 2002 at 20:23:10 from (66.66.72.246):
In Reply to: Question for Bob M. posted by Andrew on March 31, 2002 at 19:30:15:
Andrew - The 1-wire alternator uses a different regulator from the standard 3-wire unit. I don't know all the internal details, but works by maintaining a very small, but constant current drain thru the BAT terminal. The 1-wire units are simple to wire up but have a couple of inherent disadvantages: 1 - The constant current drain will pull the battery down if left connected and the engine is not started for an extended period (generally a few weeks). 2 - The 1-wire unit must be spun up to a higher RPM than a 3-wire to "turn on" the regulator and commence charging at startup. (Once it begins charging it will continue to charge when idled down, same as for a 3-wire.) Hope this helps...
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