Only in the practical sense. Since potting my capacitors in high K media,
I've had no flashovers. Visible coil output has improved too.
I have the means to measure the capacitance, but I'll have to work out how
to do the other measurements.
PBT
----- Original Message -----
From: "Clive Penfold" <clivepenfold@xxxxxxxxxxxxxx>
To: "Tesla Coil Mailing List" <tesla@xxxxxxxxxx>
Sent: Monday, November 25, 2013 1:41 PM
Subject: Re: [TCML] Unusual dielectric media
Have you measured the resistance, breakdown voltage and capacitance using
castor oil and glycerin? If so, I would be interested in the results
Regards,
Clive
>________________________________
> From: "mrapol@xxxxxxxxxxxx" <mrapol@xxxxxxxxxxxx>
>To: Tesla Coil Mailing List <tesla@xxxxxxxxxx>
>Sent: Monday, 25 November 2013, 17:45
>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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>
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