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Re: [TCML] Unusual dielectric media



I'm very surprised that there are still people who build their own caps? 
It's much better to buy some maxwell pulse caps or build a MMC, forget that 
oily nasty stuff...


----- Original Message ----- 
From: <mrapol@xxxxxxxxxxxx>
To: "Tesla Coil Mailing List" <tesla@xxxxxxxxxx>
Sent: Monday, November 25, 2013 6:45 PM
Subject: [TCML] Unusual dielectric media


> For a while now I have submerged capacitor arrays in dielectric media to 
> suppress corona,. arc-over, etc. I first used castor oil (K=4.7) and that 
> worked fine, but it's not so easy to get. I read on a list dielectric 
> materials that glycerin has a high K (47-68!) but I was afraid that, being 
> anhydrous, it would absorb water and lead to corrosion. I set up four 20KV 
> caps in parallel in a bottle and filled it with off the shelf glycerin, 
> the USP kind sold as an emollient. After more than a year there isn't a 
> speck of corrosion on the caps or linking hardware.
>
> Recently I found a new list of dielectric media and saw a listing for 
> "syrup" (?) having a K of  50-80. Apparently this is corn syrup. Now, corn 
> syrup ought to considerably cheaper than castor oil or glycerin. I think 
> I'll start a new bottled array soon. I don't suppose anyone out there has 
> tried this already?
>
> PBT
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