[funch]

If I change my STEPS to run on 220V (changing the jumper to run the tranny
in series), will I also have to reset the output, or should it remain the same?
Of course, it shouldn't need readjusting, but ..... .

 

[Pars]

Should stay the same if all you are doing is switching the primaries from parallel (110V) to series (220V). And of course plugging it into the appropriate voltage outlet!

 

[funch]

Thanks Pars. I'm going to be sending my STEPS to England and just wanted
to be sure the new owner wouldn't encounter any problems. I didn't think it
would be a problem, but if anything weird is going to happen, it's going to
happen to me.

 

[tangent]

I would actually expect a small shift, because English wall voltage isn't twice American wall voltage, and this change halves the wall voltage relative to the US configuration. 220 / 120 = 1.8

If your supply is configured to have just barely enough voltage so the regulator doesn't drop out, this will probably make it drop out. I'd re-run the numbers in the power supply parameter estimator to see what it tells you.