RJT>RS>GM> All the auto regulators I've looked are linear. Switched would be
RJT>RS>GM> more efficient, in fact the regulator on the aux generator of the
RJT>RS>GM> diesel-electric loco that I looked at, apparently used phase
RJT>RS>GM> control. But the effect is essentially the same.

RJT>RS> The older ones were mechanical. Relays switched the field in and 
RJT>RS> out, IIRC. I wouldn't call those linear. ;^)

RJT>JE> Those went out in the late 50s - early 60s. From then on it was 
RJT>JE> electronic types

RJT>The one that I was talking about was in my '67 Fury III...

Ah well, Chrysler was always behind the times. :-(

Jay

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