Hi Greg.

27-Sep-03 08:09:00, Greg Mayman wrote to Roy J. Tellason

 GM> Yes, I still have one of those regulators. It was used on most DC
 GM> generators. An early form of pulse width modulation of the
 GM> generator field. I don't recall ever seeing it on alternators, but
 GM> it could have been used -- it would work just as well on a
 GM> rotating field as on a fixed one.

I use one here the built-in regulator on my altenator died, twice..
and external reegulators are much cheaper.

they don't work quite as well though... the internal regulator uses its own
half-bridge to extract field current from the 3-phase output windings
the external can only use the battery for that... so there's slightly less
voltage available there when the altenator's working hard

 -=> Bye <=-

---