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Re: Tank Circuit Stray Inductance...

tesla-at-grendel.objinc-dot-com On Fri, 8 Mar 1996 14:00:34 +0700, you wrote:

>>From dll-at-egg-rb-dot-com Fri Mar  8 11:13 MST 1996
>From: dll-at-egg-rb-dot-com
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>Date: Fri, 8 Mar 1996 12:14:38 -0500 (EST)
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>Subject: Re: Tank Circuit Stray Inductance...
>To: tesla-at-grendel.objinc-dot-com
>
>It appears from your statement that you see five or six current bursts per half 
>cycle that your gaps are chopping.
Correct.

> This means that they are not fully entering 
>the arc mode.

I would think that this is good from the standpoint of quenching the
gap, tho bad from a standpoint of voltage drop.
I'm still learning about plasma's, I've bought a copy of Engel's
_Ionized Gases_ but haven't read it all yet. Do you have any
suggestions for references on spark gaps?

>  This is not necessarily a bad thing because this chopping 
>probably pumps your primary circuit up to a higher peak voltage, but it does 
>mean that the effective arc resistance is higher than it would be if the gaps 
>fully commutated.  
I'd like to explore ways of getting the gap to fire more rapidly. Of
course that means quenching the gap more rapidly. I'm aware of air and
magnetic quenching but would not like to reinvent the wheel if others
have already researched a technique.

>
>I found with my own Tesla coil that air gaps and smaller hermetically sealed 
>gaps got hot fast.  I had a ceramic-metal gap with two inch diameter Molybdenum 
>electrodes backfilled with Hydrogen to a static breakdown voltage of ten kv dc. 
>This gap will drive the coil continuously without getting too hot.
>
>I like Hydrogen because it transfers heat very well, and has a shorter 
>deionization time than many other gases.  
>
Like a hydrogen thyratron without the control grid. I like it, where
did you get it? If you made it: gaps? H2 pressure?

	regards

	jim