I looked at the example circuits of flattransformer company and like
Mr. Fial says, you need no extra parts.  Your main  parts
for regulating with are the high voltage switch transistors, your
controller, and your low voltage output switch transistors that can just be
timed
statically with respect to the oscillator ones.  Flat transformers don't
even
need square 50/50 duty cycle...you can regulate by varying the on time of
the
input voltage switches.

Mr. Fial IS suggesting PWM switching form a higher voltage.  that's what
flat
transformers are good at.  for a specific application supply, all that is
left is a sensor method for regulating the one volt output...some minimal
a2d.

John Griessen
> -----Original Message-----
 We are talking 98% efficiency here with 1.0 volts out,
> scalable to almost any power level.
> >    Regards,
> >      Ron Fial
>
>   This sounds like a PIC project to me <G>  I'd think that PWM switching
> from a higher voltage power supply would be another possible method,
> ("Buck switcher") giving about 80-85% efficiency potentially, give the
> cell phone/CPU industry another 2-3 years & there'll be a Maxim chip or
> 15 to do this very job, I'd bet.
.
.
>   Mark
>