I have been the recipient of the whole secondary current from my 2kw TC (4
foot + sparks) on three occasions when Eye-gor accidentally turned it on
before I was clear. All three entered around the shoulder area and exited
through the feet. It felt like being kicked by a mule, but I had no
lingering pain or other effects. It does cause involuntary emission of a
long string of extremely bad words. My MicroCap simulator says I should
have received pulse currents of about 1-2 amps. Average current was a few
mA, and RMS was something like 10-20mA. In my opinion, the absence of
lingering effects is not an adequate reason to experience this again.
Sent: Monday, February 17, 2014 10:52 PM
To: Tesla Coil Mailing List
Subject: Re: [TCML] Joint pains with Tesla contact ?Myth
While playing with small to medium coils holding an ungrounded metal rod
to draw the arcs, I have always found the pain to be in my wrist (not
necessarily the joint).
I assumed this to be to the increased current density due to the smaller
cross section of conductor...?
I have had one nasty shock with a large coil drawing 7kw and producing
6-8 foot arcs.
It was at one on my early shows over ten years ago, and I was wearing a
home made suit...
One of the metal mesh boots I was wearing almost slipped completely off
as I took an arc to a sword I was holding. I dropped to the ground
(partly with the pain, and partly because the muscle in my leg stopped
working...) and rolled away from the machine while it continued to
strike me on the ground. The audience loved it of course and never knew
I was in real danger!
The pain was in the calf muscle in my lower leg (most likely due to the
fact it was where the bad connection was in the suit), and it ached for
about 3 days...
Needless to say I made sure that could never happen again!
Carlos
On 2014-02-18 18:11, Jim Lux wrote:
On 2/17/14 6:18 PM, Peter Terren wrote:
A quote from Antonio Carlos M. de Queiroz in a recent post in regard to
contact with Tesla coil sparks.
"A common effect is pain at the joints, because there the resistance is
higher and most damage occurs."
Joint pain (wrists and ankles) observed after exposure to high Rf
fields, notably in VHF range, surmised to be for the reasons Antonio
describes.
It's a whole body exposure, notoriously from ground crew ear airplanes
on carrier decks.
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