[Prev][Next][Index][Thread]

Re: Elementary Lecture



Russ,

It's not only the computers you have to worry about.  Any electronic device
could be in danger.  At work we only test to 300 V/M for automotive electronic
ABS controllers, and I measured that at 6 feet away from a coil operating from
a 15kv 30 mA neon sign transformer.  In a comercial building you could affect
smoke detectors, alarm systems, pagers and phones, network connections, and
even small calculators and such.  A shielded building area or an outside demo
is a must for larger coils. I tend to keep people at least twice as far away
from the coil as I have ever had a spark travel.  You can still light up
florescent tubes at that distance.

R. Scott Coppersmith


In a message dated 2/27/99 4:25:20 AM Central Standard Time, tesla-at-pupman-dot-com
writes:

<< Original Poster: Russ & Kathy Thornton <radarguy-at-gdi-dot-net> 
 
 Hi folks,
 I have done class demos in the past and when I get another coil going I
 want to use it in my lecture also.
 However, I have had the question of liability especially on a coil that
 shoots off a  foot or greater sparks.
 The classrooms that I have been in are loaded with computers and I would
 be affraid that a large coil would fry something or at least the
 accusation might be there.  I thought that if I were to do this and plan
 it, I would request a more neutral location like the auditorium or
 lunchroom.  Any other comments on this would be appreciated.
 
 Russ Thornton
 
 
 Original Poster: "Ross W. Overstreet" <ross-o-at-mindspring-dot-com>
 
 That is an excellent question that I would love to see answered.  An
 even
 better
 twist is that I have noticed that after the arcs reach the 30 inch
 range, they
 don't seem to "care" as much about the ground rod and seem just as happy
 
 reaching
 out into space.
 
 Brian Basura's coil doesn't even seem to like ground rods, even though
 he is
 producing healthy 4-5 ft arcs!  Yes, I'm sure the rod and the bottom of
 his
 secondary were adequately grounded... Is there a scientific explanation
 for
 this
 or is his coil just "confused"? hehehe
 
 Anyone have any ideas on this one?
 
 
 > Original Poster: Brandywine <brandywine-at-writeme-dot-com>
 >
 >    Why sparks will leap between the toroid and a grounded object is
 quite
 > understandable; but the magic of a Tesla coil is that sparks
 spontaneously
 > branch
 > out into thin air, connecting with seemingly nothing.
 
 ... snip...
 
 >    I certainly have not read all available Tesla coil theory, but I've
 yet
 > to see
 > a thorough explanation of why a Tesla Coil does what no other device
 can
 > do--emit
 > sparks that terminate in the air.
 > Dave Hartwick
 >
 
 --
 Ross Overstreet
 ICQ# 20762411
 www.geocities-dot-com/CapeCanaveral/Cockpit/3377/
 
  >>