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Re: Eithernet Vs. Tesla Coil...
Original poster: "Laurence Davis by way of Terry Fritz <twftesla-at-qwest-dot-net>" <meknar-at-hotmail-dot-com>
10/100 ethernet doesn't use terminators (thats for coax.) blackbox-dot-com and
others have surge protectors. i have a hub in my basement that occasionally
needs rebooted as it stops passing packets. seems to happen right after the
coil is run.(1700kw coil 15ft from hub)
I'd suggest either STP (shielded twisted pair) with only ONE end grounded
(prob at hub end) or multimode fiber(at $1-2usd/ft, yea right!)
if you use 100ohm term loopback plugs, the hub will partition the port.
and it will still try to reopen the port every second. heres the pinning
if you want to try it. (1,2 tx+, tx-, 3,6 rx+, rx-)
or put a faraday around the hub and reroute the wiring while optionally
running it in grounded metal conduit.
have i helped any?
>From: "Tesla list" <tesla-at-pupman-dot-com>
>Subject: Re: Eithernet Vs. Tesla Coil...
>Date: Mon, 18 Mar 2002 22:59:21 -0700
>Original poster: "Jim Lux by way of Terry Fritz <twftesla-at-qwest-dot-net>"
> > However, I noticed that several Eithernet ports on my LinkSys 5 pot hub
> > (EFAH05W) were mysteriously blown to bits!! Mysteriously... These
> > were connected to long usually unconnected cables near the area were
> > coils are used.... hmmmmm.... Obviously a total coincidence... :o))
> > "me thinks" that Eithernet and Tesla coils may not mix well!! The ports
> > seemed to just flicker and jump between the 10 and 100 Mbps modes
> > ever making real contact. I wonder if some type of termination
> > would help protect them?
>Perhaps.. 100 ohms between each of the pairs (any of the plethora of TIA
>wiring diagrams will show you which pins, and I'm too lazy)...
>Perhaps a ferrite bead around the whole cable?
> > So I got a new NetGear FS108 switch now with plenty of "extra" ports ;-)
> > real super nice switch too!!) so I should be set for a few more coil
> > It should also speed up hot-streamer since it is a real hot doggy
> > instead of a "hub":
> > http://hot-streamer-dot-com/
> > I'll try to be sure to leave unused long cables disconnected which is
> > on this "front-loading" 33 activity LEDs Eithernet switch.
>Except that unless you unplug, it's not really disconnected, eh?
> > Hotstreamer also has a new Viewsonic VE150 LCD monitor now. Only 30
> > "if on" as opposed to my old 250 watt Viewsonic 7 monitor. My niece
> > pointed out that I was paying $150 bucks a year to run that big old
> > 24-7!!! Also MUCH longer UPS operation now if I blow the main
> > panel out of the wall :-))
>I just ran across a OEM surplus place (in Pasadena, near work) that has HP
>laptop LCDs for $15.... pinout is indeterminate (so far), but tomorrow at
>lunch time, I'm on my way down there... 640x480 STN displays... that's good
>enough for "terminal emulator" and "fancy LED" displays...
> Unless I scrounge up a surplus ASR33 teletype.. I'll bet that's EMI
>immune..and, if it's not receiving characters, the power dissipation is
>low (the motor doesn't start until it gets the "START" bit...)