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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
 >
 >
 >
 >
 >