Re: Taming the SISG

["Tesla list" <tesla@xxxxxxxxxx>]

Original poster: Finn Hammer <f-h@xxxx>

I thought about that, but didn`t get to it.

But what I had in mind was this:

In the pulse wire, which is RG-218 coax inner wire, there are 7 
wires. 6 wires twisted around one center wire.
I could pull the center wire out (not easy, but possible with short 
pieces of coax) and replace it with an insulated wire, then use the 6 
remaining wires as the shield.
This would leave the 10kV potential across the polyethylene 
dielectric of the RG-218 as before, and place the ground right next 
to the wire that carries the trigger pulse.

Cheers, Finn hammer
(who thought a ground connection only was something that _Microsim_ 
required, in order to run)


Tesla list skrev:
> Original poster: Vardan <vardan01@xxxxxxxxxxxxxxxxxxxxxxx>
> Hi Finn and All,
> It probably does not matter now, but it might be a factor later on...
> In the CT like array where there are many transformers around a 
> stripped piece of RG-8 style coax.
> http://home5.inet.tele.dk/f-hammer/TOTSISG.jpg
> There is a chance (small) for arc through or capacitive noise to go 
> past that layer.  A simple solution is to simply add a grounded 
> layer in there to stop the capacitive coupling and act as a HV 
> shield too.  Sort of like this with the DRSSTC current pickups:
> http://drsstc.com/~terrell/pictures/CTshield.JPG
> The grounded tube has no effect on the circuit, but it stops the HV 
> RF coupling and noise dead.  Of course, the highest voltage CT must 
> then still able to stand off the grounded tube too...  "tri-ax" type 
> cable might be a nice choice too...
> Just a thought,
> Cheers,
>         Terry