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Re: Damages to Electronic Equipment

How much does the risk of damage decrease if the coil is a long way away
from any computers (a have a rather long garden). Can damaging
interference propagate purely through the mains wiring, even if the
house earth is not used.

Tesla List wrote:
> 
> Original Poster: Terry Fritz <twftesla-at-uswest-dot-net>
> 
> Hi,
> 
>         Very glad you computer is still around!
> 
> I have blown a telephone answering machine (AT&T) about 20 feet away.  I
> can set off a CO2 detector 25 feet away.  So the EMI off a Tesla coil can
> go far.  It does not matter if there are walls or floors in the way.
> 
> When I run a lot of power, I remove ALL the wires from the computer so it
> is just a metal box.  Any wires leading into it are ways for nasty signals
> to get conducted to it.  All those long wires between things are very
> likely to pick up RF so they need to be disconnected from anything your
value.
> 
> Find a very good ground for the Tesla coil.  This will insure that the RF
> has a place to go.
> 
> A good line filter (I use three) and MOVs (Metal Oxide Varistors,12 of
> them) to filter and clamp any AC line strikes.  I do use a scope and
> sometimes a laptop near my coil.  The scope is just darn tough and I run
> the laptop off batteries.  I also have a cheap printer.  I realize I am
> taking a risk with these and I accept that.
> 
> I cannot explain or predict every last detail of how to protect everything
> in your situation especially over E-mail.   Basically, you need to get any
> wires that come within say 20 feet of the coil removed or disconnected from
> the computer.  This includes AC, LAN, phone, etc.  A chicken wire cage may
> go a long way here but it must not be connected to the ceiling and such.
> It would almost have to be in it's own cheap wood frame.  If it were hooked
> to the ceiling and grounded, it may only act like a transmitting antenna
> and could make matters worse.
> 
> I would think about making the coil fairly portable and finding another
> nice safe location to run it.  Tesla coils are nasty and when they do
> decide to destroy electronics, the damage is "bad".
> 
> Cheers,
> 
>         Terry
> 
> At 09:40 PM 02/14/2000 -0500, you wrote:
> >do i have any probs. running only a 7.5kv-at-30ma nst tesla
> >coil?interferencewise?
> >