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Deuterium Thyratron CX1622 EEV

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Steve Conner

Fri Nov 26 2010, 04:43PM

Registered Member #30 Joined: Fri Feb 03 2006, 10:52AM
Location: Glasgow, Scotland
Posts: 6706

OK, maybe we'll delete the thread later. If anyone would like this user banned as a spammer/spambot, please PM Chris Russell. For now I'll leave the thread up so he can see it.

Neuuubeh

Fri Nov 26 2010, 05:16PM

Registered Member #3411 Joined: Sat Nov 13 2010, 08:25PM
Location:
Posts: 33

I was wondering about the fancy pics myself :D. And it is indeed a rareeee item...

Adam Munich

Fri Nov 26 2010, 06:01PM

Registered Member #2893 Joined: Tue Jun 01 2010, 09:25PM
Location: Cali-forn. i. a.
Posts: 2242

I'd like to see his reply first before you can this thread.

klugesmith

Fri Nov 26 2010, 07:11PM

Registered Member #2099 Joined: Wed Apr 29 2009, 12:22AM
Location: Los Altos, California
Posts: 1716

Neuuubeh wrote ...
As for krytrons, people say they can be found on fleemarkets in the usa.. one even claimed he got a box of em for like 50 cent a piece.... Never heard of anyone finding sprytrons tho :D. I dont get the whole "illegal to sell/buy/trade" thing, as it would seem a simple spark gap which anyone can build in like 10 mins allows switching of even higher energies (and is even faster?)

I found some krytrons at the flea market last May.
[edit] replaced pictures with link to previous thread.

Had wondered how to demonstrate their switching speed without putting expensive instruments at risk. Then last week at work, for ESD damage studies, we got some gear including a 20:1 attenuator with 2500 V pulse rating and 10 ps alleged risetime!

I agree that plain spark gaps in air can switch higher energies. But many repetitively pulsed lasers in the lab, and all exploding bridgewire detonators, only need a few joules.
Krytrons I think -do- turn on faster, and can be electrically triggered with low jitter. AFAIK, the only benefit of vacuum sprytrons is hardness against premature triggering in an environment of nuclear detonations.

Proud Mary

Fri Nov 26 2010, 07:22PM

Registered Member #543 Joined: Tue Feb 20 2007, 04:26PM
Location: UK
Posts: 4992

Beyond the descent into arbitariness of the forum rules, some of the bilge that passes itself off as informed comment about the different sorts of gas switches in this thread amounts to what is technically called - in some, but not all cases - bollox.

Adam Munich

Fri Nov 26 2010, 10:15PM

Registered Member #2893 Joined: Tue Jun 01 2010, 09:25PM
Location: Cali-forn. i. a.
Posts: 2242

I need to go to more flee markets...

Neuuubeh

Fri Nov 26 2010, 11:17PM

Registered Member #3411 Joined: Sat Nov 13 2010, 08:25PM
Location:
Posts: 33

Klugesmith wrote ...

I found some krytrons at the flea market last May.
[edit] replaced pictures with link to previous thread.

I was under the impression spark gaps trigger the fastest, tho on the other hand, triggered spark gaps are again slower.. I had some paper about pulses sub-nanosecond in width and the author was only talking about sparkgaps.. My point was, why bother so much with regulating krytrons and sprytrons (sprytrons, what other use than in nuclear devices really? Hard ionizing radiation resistance? Where else??), when a low-tech solution is pretty much good enough (although possibly not so tiny and handly). Then again, I dont know much, I just read some papers out of curiosity mostly :D

Thanks for that link!

Neuuubeh

Sun Nov 28 2010, 08:39AM

Registered Member #3411 Joined: Sat Nov 13 2010, 08:25PM
Location:
Posts: 33

Nico has become quite silent I see :)

Heh, just wanted to thank the thread-starter anyhow : Whilst this would seem to be a 100% scam affair, it prompted me to take a look at our favorite auction site and scored a CX1159 (

) yesterday :D. Seems to be used, and I dont really have a use for it, but who can say no to a 31cm big piece of glass for like 8eur? :D. As the germans say, Nichts fÃ¼r ungut :)

Will post pics once I get it, im really happy hehe :D

Nico

Mon Nov 29 2010, 10:13PM

Registered Member #3441 Joined: Thu Nov 25 2010, 07:59PM
Location:
Posts: 2

Hello guys,

I have to re-explain some things:

- I am a real person, I live in Germany, I have a MSc degree from the KIT (Karlsruhe Institute of Technology / University Karlsruhe). Do you thing someone has the time to make fake pictures and stuff of a "deuterium thyratron"??? Can you imagine some even more weird item??

- I have nothing to do with high-voltage experiments. That's why I don't post here.... How should I write 15 posts without spamming?
It is like you find a purple horned chameleon in your garden and ask the chameleon-community if they want it - even if it is the last one living o earth.

- To be honest I even forgot that I posted this thing here until the box was standing in the way again ;) That's why I was "qiet".

The "item":

Some years ago I bought different trashed medical and industrial lasers to play with them, to repair them and mainly because they were cheap ;)

THIS TUBE was a spare part of a CO2-Pulse Laser, which was used to shoot the "best before date" onto bottles rushing past in one pulse. The Laser went to eBay (btw.: there were a few of those tubes inside ;) , the carton with the tube was forgotten and went somewhere in the basement. While cleaning my stuff recently I rediscovered this thing, asked a friend of mine what it is and he told me I should ask YOU guys.

Seems it was a good idea on one hand, but a bad one on the other, considering the 'trouble'. So I suppose the best solution is to put it on eBay. starting at 1,- (will make new pictures in a few days and put it online).

Delete the thread if you like. Or close it. Won't come here again to soon. Sorry for the inconvenience!!!

PS: @Mads Barnkob: WTF? all-inkl.com (neue medien munich) is just a regular webhoster with millions of domains. So there's a good chance that some of them send spam, ideed. Strange conclusion.

ScotchTapeLord

Tue Nov 30 2010, 01:01AM

Registered Member #1875 Joined: Sun Dec 21 2008, 06:36PM
Location:
Posts: 635

Guys, I can't be too sure but I get this strange feeling that Nico might be real. ;)

That's a nice tube, probably worth more than anyone is willing to pay for in hope that it eventually arrives at their doorstep. I would be interested if I were closer geographically, but sadly I'm still waiting for my last trans-oceanic purchase to get here and am frankly not thrilled with the wait or with the fear that it may never arrive.

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