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Re: Very COOL AVI

On Tue, 21 Jan 1997, Tesla List wrote:

> Subscriber: knardell-at-mailhost.accesscom-dot-net Tue Jan 21 22:41:10 1997
> Date: Tue, 21 Jan 1997 00:33:46 -0600
> From: Kevin Nardelle <knardell-at-mailhost.accesscom-dot-net>
> To: tesla-at-pupman-dot-com
> Subject: Re: Very COOL AVI
> 
> A
> >Kevin, 
> >
> >You're approaching the point where the power level and efficiency of
> >your coil will cause permanent damage to the computer in your room. The



	This happened to my computer--I had unplugged it, but
unfortunately, the phone line was still plugged in.  The phone line
goes into a modem board in the back of the computer (ISA slot) and
right below it was the VIP board for the VFX-1 VR headset.  After
discharging the coil in the next room, about 15' away, I noticed
transient and intermittent problems with the video display (i.e., fading
out from full color to white, strange lines, etc.).  What happened,
I suppose, is that enough voltage was induced in the phone line to
arc over to the other circuit board.  The distance inside between
the two boards was about 1/4".  The phone line ran through the room
with the coil, but it was several feet away, on the floor, and the
coil only used a 120mA, 7200V neon sign xformer.  But I guess this was
enough.

ps. about the strange pyramid picture with the helix, I agree with
the other postings, it does look like a gentle discharge from two
conductors, maybe copper or brass strap.  Perhaps such a discharge
could be shaped with a 3D magnetic field generated by say, four
stacks of electromagnets?  Maybe some of you folks out there with
lab equipment could try it out?




> >MOS devices used in your computer are very sensitive, and unforgiving,
> >to over-voltage. The cables going to your mouse, keyboard, and monitor
> >are acting as antennas and are picking up the RF radiating from your
> >coil and piping it into your machine. 
> >
> >The lock-ups you're seeing are a warning. You need to provide more
> >physical separation between the coil and the computer, or any to other
> >sensitive electronic equipment. Experienced coilers never keep any solid
> >state electronic equipment in the same room with an operating Tesla
> >Coil. Simply turning off the computer will _not_ protect it. 
> >
> >Safe coilin' and, hopefully, continued computin' to ya!
> >
> >-- Bert --
> >
> >
> >
> Bert, 
> 
> I hear ya man, I know where you are comming from as I have already fried a
> 16Meg simm with the coil, wheh the memory prices have fallen. I know the
> computer is at risk and I an trying to figure where I am going to continue
> this coilin', last night I was robed, I WAS going to do it in the detached
> garage BUT they broke in and got the bike. It could have been a coil. I did
> however (JUST BY CHANCE ALONE) manage to scare the SH%$ out the bad guy by
> running my coil suddenly at 2AM, it is located right next to a window and
> the bad guy jumped and knocked over a bench when I powered it up. I had no
> idea I was being ripped off though. I did look but saw nothing. Anyhow, the
> point is: Where an I going to coil now? I can't think of anything but
> pulling everything out into the yard when I wanna play with it.
> Will the humidity screw something up, this New Orleans, home of humidity.
> 
>                                        Regards,
>                                             Kevin Nardelle
> 
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