Yeah, that’s right. But just hold on there bub :-), let me measure the real life situation.

I don’t go into work until 4, and it’s a lovely sunny day here, so why not do my wee testing? 

Ab

> On Apr 9, 2020, at 11:16 AM, David Beierl <dbeierl@gmail.com> wrote:
> 
> 
> 
> 
>> On Thu, Apr 9, 2020 at 2:10 PM David Beierl <dbeierl@gmail.com> wrote:
>> The regulator is an on/off device.  It turns the field on full when voltage rises above the set point, and turns it off when it falls below.  This normally happens hundreds of times a second.  The set point changes with temperature changes at the regulator.
> 
> D'oh! that's on when voltage falls, off when it rises.  But the point is that if the alternator is physically capable of it, it will hold to its setpoint.
> 
> Yrs,
> d