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Re: MOVs as an SG



Original poster: "Jason by way of Terry Fritz <twftesla-at-qwest-dot-net>" <jasonp-at-btinternet-dot-com>

Terry, Johnathen, all,
Thanks - I forgot that MOVs actually stop conducting - they would probably
explode if they didnt.... Just a thought :)

Thanks,
Jason
----- Original Message -----
From: "Tesla list" <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Friday, July 20, 2001 11:13 PM
Subject: Re: MOV's BIG MOVs!


> Original poster: "Christopher Boden by way of Terry Fritz
<twftesla-at-qwest-dot-net>" <chrisboden-at-hotmail-dot-com>
>
>
>
>
> >Original poster: "by way of Terry Fritz <twftesla-at-qwest-dot-net>"
> ><Pyrotrons-at-aol-dot-com>
> Say like on a 14.4kV
> >pig.......you'll probably find a 15kV arrestor on it? (not sure about
> >this).
>
> Yes, it looks like a ribbed ceramic tube about 12" long with a connector
on
> each end. Inside, in order, you will find...
>
> A series of MOV "Pucks" about 1" dia and 2" thick, seperated by small
spark
> gap plates and rings.
>
> A metal plate
>
> A spring with a copper ribbon through it.
>
> Another metal plate
>
>
> I'm autopsied both 12kV ones (for Pig use) and 18kV ones (Bigger Pigs).
>
>
> I've seen them rated
> >from 10V up to 480V.
>
> >Justin Hays
> >KC5PNP
> >Email: pyrotrons-at-aol-dot-com
> >Webpage: www.hvguy-dot-com
>
>
> The Group has 3 GIANT ones in stock. About 120lbs each, 8"dia, about 3'
> long, and rated for 40kV I believe...I'd have to check. They have big
metal
> ends (Aluminum I think, cast. with 3 bolt holes on each end. They connect
> with about 2awg braided copper wire and a clamp.
>
> Anyone wants one let me know, I'll sell one, but I'mm keeping the pair for
> use in the lab, unless the price is right. I can't be bought...but I can
be
> rented....cheap.
>
>
>
>
>
> hmmm MOVs instulate up to a point, then, when the voltage is high enough,
> conduct.
>
> Sounds like a simple premice for a SS spark gap doesn't it? It would be a
> delicate balance (all things related to coils are, look at MMCs) of the
> individual MOVs ratings for voltage, current, and thermal dissapation. But
> I'd bet it CAN be done, and cheaply. Maybe I just invented the MMG :)
worth
> a shot at least. Even if it doesn't work, a catastrophic failure would be
> beautiful to watch :)
>
> pop pop pop pop pop pop pop pop pop pop pop pop pop pop pop pop pop pop
pop
> pop pop pop pop pop pop pop pop pop pop pop pop pop pop pop pop pop pop
pop
> pop pop pop pop pop pop pop pop pop pop pop pop pop pop pop pop pop pop
pop
> pop pop pop pop pop pop pop pop pop pop pop pop pop pop pop pop pop pop
pop
> pop pop pop pop pop pop pop pop pop pop pop pop pop pop pop pop pop pop
pop
> pop pop pop pop pop pop pop pop pop pop pop pop pop pop pop pop pop pop
pop
> pop pop pop pop pop pop pop pop pop pop pop pop pop pop pop pop pop pop
pop
> pop pop pop pop pop pop pop pop pop pop pop (elapsed time 2 seconds :) )
>
>
> Duck
>
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>
>