> > > I'm looking for some information about AC line regulation
> > > technics. There is my problem: When connected to agricultural
> > > electrification, the measured AC mains voltage varies from 384 to
> > > 600 V, when the nominal
> > voltage
> > > is 440 V! Of course a transformer with several taps could be
> > > specified,
> > but
> > > the AC input voltage varies several times a day. There is a need
> > > for automatic AC regulation. The output has to be 127 V (AC), and
> > > the rated power is about 1.3 KVA. Could any of You members inform
> > > about any URL where I could find
> > information
> > > about calculating the circuit envolved, or give some practical
> > > advice? I say, per example, triacs, comparators and so on. I
> > > searched the internet
> > for
> > > application notes, and I could not find them.
> > >
> > >
> > > Any help woud be appreciated.
Let me play devil's advocate and stop us guessing.
I gather you want 127VAC from a line that goes from 384-600VAC.
If your output is an A.C. motor, they will tolerate a wide spread of
voltage. If your output is DC, you can use motor feedback. If you have
an smps, they will adjust the frequency.
What is going to blow up, and we will probably give you the cheapest way
forward.
What's wrong with a 400/130V transformer?
--
With best Regards,
Declan Moriarty.
--
Author: Declan Moriarty
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