Laurav wrote:

Can one get a control where you can specify the output AC voltage very
accurately, even though the input voltage isn't accurate?
It would be for input to my air turbine. The air turbine always needs
input voltage much lower than the line voltage. So the control
wouldn't need step-up circuitry.
With the rheostat that comes with my air turbine, it's very sensitive
to changes in the line voltage.
So I was thinking about bypassing the rheostat instead of buying a
power conditioner and trying to supply very accurate voltage to the
rheostat.
Laura

Ah, now comes the clue.... You don't have problems with your
voltage..

It's a simple matter of mass air flow and your motor design..

You need a closed loop PID controller to keep that steady..


Jamie