RE: [TCML] RF Filters

["Lau, Gary" <Gary.Lau@xxxxxx>]

I've never seen an RC or RCL mains filter.  Running 20A through a resistor would waste just too much power.  I guess I'd need to see an actual circuit schematic to comment further.

Realize too that the attenuation of common tank frequencies in most EMI mains filters is actually pretty poor, if you read the specs.  They are intended for higher frequencies.  I use an EMI filter, only because they're cheap and small.  But I have little hope that it makes a real impact towards reducing RF interference in the house.  To reduce the risk of _damage_ in the house, I use 250V MOV's from Line and Neutral to green-wire ground.

Regards, Gary Lau
MA, USA

> -----Original Message-----
> From: tesla-bounces@xxxxxxxxxx [mailto:tesla-bounces@xxxxxxxxxx] On
> Behalf Of Phillip Slawinski
> Sent: Tuesday, June 24, 2008 11:28 AM
> To: Tesla Coil Mailing List
> Subject: Re: [TCML] RF Filters
>
> Mains filters.  One is a RCL the other filter appears to just be an RC [much
> smaller size for the same amperage rating].
>
> On Tue, Jun 24, 2008 at 8:26 AM, Lau, Gary <Gary.Lau@xxxxxx> wrote:
>
> > That's something like asking if one can take more than one prescription
> > drug at a time.  You need to specify exactly what kind of filter and what
> > the goal of the filtering is.
> >
> > Is this on the AC mains, or between the gap and the HV xfmr (i.e. a Terry
> > filter), or are you talking about some other type of RF filter (that's a
> > very general term).
> >
> > Gary Lau
> > MA, USA
> >
> > > -----Original Message-----
> > > From: tesla-bounces@xxxxxxxxxx [mailto:tesla-bounces@xxxxxxxxxx] On
> > > Behalf Of Phillip Slawinski
> > > Sent: Monday, June 23, 2008 11:25 PM
> > > To: Tesla Coil Mailing List
> > > Subject: [TCML] RF Filters
> > >
> > > Is it okay to run RF filters in series?  Does it improve filtering / or
> > does
> > > it hurt it?
> >
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