Re: Eithernet Vs. Tesla Coil...

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

Original poster: "Matthew Smith by way of Terry Fritz <twftesla-at-qwest-dot-net>" <matt-at-kbc-dot-net.au>

Hi Terry / All

>  I wonder if some type of termination connector
> would help protect them? 

When RFI rears it's ugly head on data networks, that's when we go fibre 
- at least, those with plenty of $$$...

Twisted pair cables get their RFI immunity (ha, ha!) by means of common 
mode rejection; however, running a TC is going to be generating just a 
bit more RF noise than this can cope with!

Running your Ethernet over coax will give a little more immunity, but 
coax networks can be a pain in the derriere - one break or removed 
connector and the whole lot goes out.  Been there, done it, wouldn't 
want to inflict the experience on anyone else ;-)

Finally I get around to my proposed solution ;-)  All that you need is 
to opto-isolate your cables (poor man's fibre).  I don't know whether 
there is a commercially available RJ45->RJ45 option available, but I 
wouldn't have thought that it would be hard to achieve if you have PCB 
making facilities.  You'd need two isolators for every cable going into 
the "danger area" - one for the transmit and one for the receive pair.

I'd also recommend using SCREENED CAT 5 cable.

This isn't intended to be an exhaustive discussion on the matter, but I 
hope that it is of assistance.

Cheers

Matthew Smith