RE: [TCML] Isolating Transformer

["Reverend Fuzzy" <pastor@xxxxxxxxxxxxxxxxx>]

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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