Re: Digital O-scopes for TC use

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

Original poster: "Daniel McCauley by way of Terry Fritz <twftesla-at-qwest-dot-net>" <dhmccauley-at-spacecatlighting-dot-com>

Actually, I know it is done, we do it all the time when working on radar
transmitters.  We'll float the scopes at up to 100kV.  HOWEVER!  We only use
some old junky cheap battery powered scopes.

We never use our "good" scopes and I would never recommend people using
their personal scopes to do this.

Dan





> >Or you can get one of the nice portable
> >tektronix digital scopes which has a battery.  You could then float it at
> >the top of your toroid and take measurements!!!  ;)  Well, just kidding
> >actually . . .
> >
> >Dan
> >
> >
>
> Hi Dan,
>
> That is really not as crazy as it sounds.  You could also hook up a laptop
> to it to grab the scope measurements to hard disk...  As long as you
> completely enclosed the thing in the top terminal, it should* be safe.
>
> Of course, Greg Lehy has already gone one further and put himself in the
> top terminal too to run the scope (Fluke ScopeMeter) and take pictures of
> the data!  This is how he made the scope pictures at:
>
> http://www.lod-dot-org/electrum/electrumspecs.html
>
> These early 98 scope captures were the first real hard scope pictures of
> such terminal currents.  Real ground breaking data gotten the "hard way"!!
> ;-)  These first little scope pictures "changed" the world of Tesla coil
> science!  I still ponder them...
>
> Of course, the terminal on his coil is big enough to be inside while
> running ;-)
>
> http://www.lod-dot-org/electrum/electrumpics.html
>
> I have electronics (but cheap stuff) in several terminals that gets along
> fine.  I have to admit, I am not about ready to put $4000 of "my" scope on
> top of a Tesla coil, but it "can" be done.
>
> Cheers,
>
> Terry
>
> *A few details like how you hook it up externally and design the terminal
> to be truly a Faraday cage...  Don't screw up :-))
>
>
>
>
>