Re: Don't want to kill grandpe

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: Terry Fritz <teslalist-at-twfpowerelectronics-dot-com>

Hi,

I would go with 30 feet from a "gut feel"...  At 30 feet, the magnetic and 
electrostatic fields should be well outside what would affect a pacemaker 
electronics.

But I would use 30 feet for "any" small coil (neon transformer powered) 
regardless of spark length.  Even a little tube coil.  I think the bad RF 
could be just as great with a little coil as with a larger one.  Spark gaps 
and power arcs to ground put out terrible local RF into the GHz.  You can 
always use a little transistor AM radio to "sniff" around for RFI...

If the sparks are like 20 feet or something, then put grampa in the next 
county ;-))

Cheers,

         Terry


At 08:22 PM 8/7/2004, you wrote:

>I have a pacemaker in me.  4 x the strike distance has always worked for me.
>
>Dr. Resonance
>
>
> > My grandfather is coming for a visit and says he is looking forward to
> > seeing my coil in action. Problem is he has a pacemaker! I sure don't want
> > to kill him. I don't have a faraday cage around it. How do I determine
>what
> > would be a safe distance from the running coil? The coil I plan on running
> > is powered by a 12-60 NST and putting out 6Ft. streamers. The Secondary is
> > connected to a 6 Ft. copper ground rod by 15 Ft of 10AWG wire. More info
>on
> > the coil:
> >
><http://homemadelightning.bravehost-dot-com/45coil.html>http://homemadelightning
>.bravehost-dot-com/45coil.html
> >
> > Thanks for any input,
> > Steve Vance
> >
> >
> >