Hi Tim,
Not really sure what to suggest here. A standard ferrite core transformer has worked OK in the past for many years, so anything suggested below should work OK. If you are worried about the mains input clarity then you might want to look at the filtering arrangement on the input side. There is already a 'spark killer', but a nice T or Pi filter in a screened can might be better. Also, how about going down the hi-fi nut route and fitting a torriodal type. Very low loss and efficient!
Bye,
Andy
--- In PolySix@yahoogroups.com, tim p <target9@...> wrote:
>
> Hi Andy
>
> Thanks for that :0)
>
> I've converted a number of US machines to UK voltage and repaired various faults on my gear successfully (vintage kit needs maintenance).
>
> Was just wondering if anyone had a particular recommendation of a specific model transformer for the PolySix in respect of it's build and desirable noise characteristics.
>
> Cheers!
>
>
>
>
>
>
>
>
> On 17 Jul 2011, at 15:49, "Andrew Jury" <andy@...> wrote:
>
> > If you canât work this out for yourself then I would be very carefully
> > poking around on the primary side of the mains supply!! However, as long as
> > you promise not to sue anyone if it goes wrong then the 50VA transformer
> > with 2 x 25v secondary windings might be what you are looking for.
> >
> > Cheers,
> > Andy
> >
> > On 17/07/2011 13:44, "tim p" <target9@...> wrote:
> >
> > >
> > >
> > >
> > >
> > >
> > >
> > > Hi everyone
> > >
> > > I've recently converted an MKS-70 from US 117 to UK 240v, a simple job as the
> > > transformer had 240v taps.
> > >
> > > I've decided to convert my US rated PolySix, but the internal transformer does
> > > not have 240v taps.
> > >
> > > Can anyone please help with recommendation of a transformer they have used to
> > > successfully convert to UK?
> > >
> > > Thanks!
> > >
> > > Tim
> > >
> > >
> > >
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> > >
> > >
> > >
> > >
> > >
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> > [Non-text portions of this message have been removed]
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