RE: Pacmakers and Tesla coils = bad??
You are going the wrong direction! Put the people with pacemakers in the
Faraday cages and let the coils run out in the open. This doesn't hurt
performance at all.
From: Tesla List [mailto:tesla-at-pupman-dot-com]
Sent: Monday, February 14, 2000 10:52 AM
Subject: Re: Pacmakers and Tesla coils = bad??
Original Poster: rdgraaf-at-ocenl.nl
There is a very simple solution: it's called a cage of Faraday...
Chicken wire will do the trick. Naturally this will cost some
performance, but hey what is more important? btw, will also protect
your own and your neighbours Hifi, TV, Computer, etc.!
Ruud de Graaf
> Original Poster: Terry Fritz <twftesla-at-uswest-dot-net>
> Hi Stan,
> WOW!!! When I was reading about pacemakers, it was implied that they
> could be accidently triggered by a number of things. I was not really
> "sure" a TC could do it but the things they described seemed like it would
> be very possible. However, this is proof that a 15/60 coil can trigger
> defibrillator types at 25 feet. The people that have these are warned by
> their doctors what the jolt they give is like so they will be somewhat
> prepared. This is especially important if they are driving or something
> (Mark mentioned that they would normally be unconscious, but perhaps that
> can be programmed). Pacemakers can also be stunned into safe and default
> modes if their logic detects something is wrong. This may go unnoticed
> they may not be able to operate as needed in such a fail safe state. The
> equipment that "talks" to these pacemakers may be able to detect and count
> the number of times they are affected.
> There apparently are no official levels or standards of EM interference
> for these things. Different brands appear to be affected more or less.
> They are somewhat "hardened" against normal EMI but a Tesla coil is
> obviously quite abnormal in most EMI respects. CERN calls out 0.5mT but I
> am not sure that is well based.
> It would be nice if we could come up with a "safe" distance or some
> maximum EM level but there appears to be no such data that would apply to
> all manufacturers of pacemakers. It looks like the only thing we can go
> now is "Keep pacemakers FAR away from any TC!"
> Many thank for this very important post on this subject!