Re: Flyback burn.. and RF burns

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

Original poster: "Jolyon Vater Cox by way of Terry Fritz <twftesla-at-qwest-dot-net>" <jolyon-at-vatercox.freeserve.co.uk>

I may be wrong  but isn't thermal injury caused by RF current driven by an
RF voltage adequately described as an "RF burn"
whereas "electric shock" would suggest at least some nervous system reaction
to , or sensation of, the passage of current through the body
-something which is less noticeable or non-existant with RF currents and
voltages?

Jolyon
----- Original Message -----
From: "Tesla list" <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Monday, December 09, 2002 3:05 AM
Subject: Re: Flyback burn.. and RF burns


 > Original poster: "by way of Terry Fritz <twftesla-at-qwest-dot-net>"
<dhmccauley-at-spacecatlighting-dot-com>
 >
 >
 > Well, actually you really aren't experience RF burns.  The burn you got
from
 > your flyback can be classified as your typical "high voltage" electric
burn.
 > Same with the arcs you pull from running a high RF field in the vicinity.
 > Its not really the RF that is burning you.  The RF field is building up
 > charge on
 > various objects and the arc from this is purely "your typical electrical
 > shock" in nature.
 >
 > An example of a true RF burn could be the following:
 >
 > For some reason, some technicians were running the output of a 50kW
(pulsed)
 > S-Band transmitter right out some open waveguide without a load.
 > The individual felt warmth in his side where he was standing and a few
days
 > later found out his kidney was basically destroyed by the RF.  Now thats
 > a true RF burn.  There are also some good documentary military safety
films
 > out there from the 40's and 50's that actually show what happens with high
 > RF
 > by placing a monkey in the front of a high power radome.
 >
 > Dan
 >
 >
 >
 >
 >
 >
 >  >
 >  >
 >  >  > Blah, you usally smell it or feel the burning pain
 >  >  > befor it gets that far.
 >  >  > But, you are right, you don't actauly feel the
 >  >  > electrocution
 >  >
 >  > Yeah, but I got an RF burn from a flyback and it
 >  > happened instantly.  I didn't have it grounded and I
 >  > stuck my thumb under the PCB where the bottom of the
 >  > secondary terminates.  It blasted a hole all the way
 >  > through my thumbnail and carbonized the flesh
 >  > underneath.  It was very painful and it took about 4-5
 >  > months to heal.
 >  >
 >  > -Brett
 >  >
 >  >
 >  >
 >  >
 >  >
 >
 >
 >