 Triggered spark gap design considerations...
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ifryd
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Wed Jan 04 2012, 11:14PM
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Registered Member #4215
Joined: Wed Nov 16 2011, 09:45PM
Location:
Posts: 32
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Hello
This is a continuation of the previous post but the subject is different. After research which I made I came to the conclusion that subject of "switching power" is not an easy one and even books are dedicated to this subject:
Good book I wish I had a copy of it...
Anyway after research i came to the conclusion that industrial switches are hard to get and expensive. The easiest and fastest way is to design and make your own triggered spark gap. I have already made triggering circuit from ignition coils so I hope I am close.
I have few questions concerning building enclosed triggered spark gap:
-what would be the best gas used inside trigatron? Air, Nitrogen, Hydrogen? If Air is ok what about ionized gases? Will they stop spark gap from operating? I want to use let say jar which would have 3 electrodes.
-what about temperature? Can trigatron work with higher temperature without air cooling?
-how to lower noise of spark gap? Is there a way?
P.S.
My previous post:
http://4hv.org/e107_plugins/forum/forum_viewtopic.php?131061
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jpsmith123
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Registered Member #1321
Joined: Sat Feb 16 2008, 03:22AM
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Posts: 843
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There's a guy selling used T-670 spark gaps on ebay for $80. (I think they're about $1200 new). And they look like they're in pretty good shape.
(I've got an old T-670 made by Physics International, that I hope to rebuild one of these days. When I do, I think I'm going to replace the brass electrodes with graphite electrodes).
Anyway, as far as the gasses used, I believe most use dry air or "synthetic" air or sometimes just nitrogen. Sometimes SF6 is added for higher voltage operation. Other gasses or gas mixtures are used to achieve other effects. I think argon is used to achieve lower voltage operation and hydrogen is used if a fast repetition rate is needed.
You can learn something about spark gaps by looking at manufacturer's literature here:
There are also some papers available on the internet describing some novel spark gap designs:
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