Re: [TCML] Isolating Transformer

[Michael Gray <graymp89@xxxxxxxxx>]

So it doesn't make any functional difference?


On 26 April 2013 14:11, Reverend Fuzzy <pastor@xxxxxxxxxxxxxxxxx> wrote:

> I had a filter on each side of the transformer...probably
> a little overkill, but better to err on the side of safe.
>
>
> > -----Original Message-----
> > From: tesla-bounces@xxxxxxxxxx [mailto:tesla-bounces@xxxxxxxxxx] On
> Behalf Of Michael Gray
> > Sent: April 26, 2013 2:13 AM
> > To: Tesla Coil Mailing List
> > Subject: Re: [TCML] Isolating Transformer
> >
> > Does it matter if I put my line filter in before or after the isolation
> > transformer?
> >
> >
> > On 13 April 2013 14:21, Michael Gray <graymp89@xxxxxxxxx> wrote:
> >
> > > Excellent. Nice to have found a use for it finally, assuming it
> works...
> > > haven't tried it yet!
> > >
> > > What's the primary reason for using them, generally? Safety? Or
> > > RFI/surge suppression? Or both...
> > >
> > > On that note, how effective are they at suppressing surges, transients
> > > etc.? I don't quite understand how voltage surges would be dampened
> inside
> > > the isolation transformer. What's actually limiting the output voltage?
> > >
> > >
> > >
> > >
> > > On 12 April 2013 17:50, dave pierson <dave_p@xxxxxxxxxxx> wrote:
> > >
> > >>
> > >>
> > >> > Brian, what do you do with the output earthing? Do you use MOV's or
> > >> > other filters?
> > >> > I have a 1kW isolating transformer. The only time I have used it
> live
> > >> > was for a briefcase coil (1/2 low power NST for 3 inch sparks).
> > >> > Interfered with the PA some distance away big time. I used a
> > >> > counterpoise plus mains earth.
> > >>
> > >>     Was the interference present with the isolation transformer?
> > >>
> > >>     Isolation transformers come in (at least) two types.
> > >>     The usual/simple type is just a one/one transformer,
> > >>     two coils and core.  This provides isolation for DC
> > >>     and LF AC, however stray capacity between windings/core
> > >>     can couple RF.
> > >>
> > >>     A more elaborate type includes a 'screen' (internal
> > >>     Faraday Cage), which reduces the RF coupling.  Sometimes,
> > >>     if i recall, referred to as an 'instrumentation
> > >>     transformer'?
> > >>
> > >>      best
> > >>       dwp
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> > >
> > >
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