Re: [TCML] Chris Bohrs' RF burn

["Christoph Bohr" <cb@xxxxxxxxxxxxxxx>]

Hello Bart

> I wouldn't call this a beginners mistake.
> I've never heard of someone getting an rf burn from holding another
> secondary, but then, it's not a common situation.
> Was the secondary completely unconnected to anything else (sort of say a
> small secondary coil)?
The situation was as follows. I was sitting on a chair in front of the
coil that was standing on the floor, aproximately 2 feet away from the
secondary. To my right there was a 4"x12" secondary wound with AWG28 iirc
which was unconnected,both open ends of the wire from the coil were
wrapped around a piece of wood on the top of the coil form, which
should hold a toroid when in use in a TC. I picked the coil up by the
wooden part, at the sime time touching both wire ends with the middle
finger of my right hand. After some 5 seconds I felt pain in my finger and
let go, at the same time there was a strange smell. After that I had a
very small, jet very painfull hole in my finger. It hurt really bad
considering the very small size. However, three days later it already
hurts a lot less...

The "free coil" was ca 2/3 the size of the exciting coil, Fres might have
been in a similar range bit certainly not identical.

best regards

Christoph Bohr

>
> Bart
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