Re: Good Caps for Tesla Coiling

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Steven Ward by way of Terry Fritz <twftesla-at-qwest-dot-net>" <srward16-at-hotmail-dot-com>








>From: "Tesla list" <tesla-at-pupman-dot-com>
>To: tesla-at-pupman-dot-com
>Subject: Re: Good Caps for Tesla Coiling
>Date: Thu, 19 Dec 2002 12:55:00 -0700
>
>Original poster: "Terry Fritz" <twftesla-at-qwest-dot-net>

>The GE42L's are all metal film.  They are pretty tough, but we still see 
>problems like this:
>
>http://hot-streamer-dot-com/temp/Pb280016.jpg
>
>Cheers,
>
>         Terry

Now this has been bugging me for some time now.  Why is it that the plates 
actually BURN?  I had these caps before with this problem.  Now what would 
happen if you over currented these at a lower voltage?  It was my 
understanding that the current was destroying the 42ls.  But would that 
actually happen at say 500v or whatever they are rated in AC?  So this 
leads to my next point,  what if there are enough of them in series so that 
there is only the rated AC voltage across them?  Is there than ANY reason 
for them to fail?  Somehow i cant see lower voltages doing this to a 
cap.  Maybe it would disconnect and that would be the end of it, becuase 
the low voltage can arc across the break?  Just curious as i still have a 
LOT of .68uf 1200v caps.

Steve Ward.