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Re: Bombarding safely

Interesting!

We could probably start an interesting collection of variants on various
switch circuits, techniques, etc.  My button (to a 100A contactor) is
double-recessed - it is below the edge of a retainer & the retainer is sunk
below the face of the box that houses it. The box has a door which can be
locked. I think I still prefer to one hand it, or I should say one stick it,
since I use a thick wooden dowel. Like most I'm sure, I use a rubber mat
(3/4").  

The other hand (left), as Tom alluded to, should probably be upon your lower
spine. Nikola Tesla (Ah, a subject we haven't touched on yet in this group)
demanded this of his assistants - the idea being the least dangerous path to
ground - it avoids the heart.

Side note:  Try using a fairly sensitive ohmmeter across different points of
the body.  You will find a considerably lower resistance from the tip of
your right index finger to your left, compared with the resistance across,
say a 1" separation on the back of the same finger of the same hand.  

Some might find this all to be quite a bit of fuss. But this is very serious
stuff.  If you've ever had any kind of a serious accident or near accident,
you realize how fast an immense amount of damage or even death can happen.  

With either the two hand version or the distance from table version, you
avoid that inevitable late night where you inadvertently reach to reposition
that piece of newsprint or the mica that fell over, or that quick tweak of
the stopcock with your elbow within jumping distance of a lead.

Kenny



>
>Attached is a ".jpg" -type scan -- if anyone has trouble decoding and
>viewing this let me know , and I can resend it as a .gif  or .tif file
>(which, however, will be much larger and require sending in pieces.)
>
>This is my own crudely-engineered but effective "safety switch" arrangement.
>With this there is only 24 volts present where one's hands are (safe by even
>OSHA's standards), and the manifold cannot be touched with current still
>flowing to the bombarder. Both hands must be pressing both switches for
>anything to be "on", and the central support bar prevents one hand from
>reaching over and hitting both switches.
>
>While theoretically the bombarder high voltage could short back through the
>primary windings and jump the contactor into the 24-volt line, it's a long
>shot. (Nevertheless I stand on a rubber mat too.)
>
>-Ted Pirsig
>
>
>Attachment Converted: C:\SLIP\AUTOSAVE\SWITCHES.JPG
>
Kenny Greenberg   Neon Artist, Scenic Specialist, Columnist - Internet World
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