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Re: Salt Cap

Original poster: "Chris Rutherford" <chris1@xxxxxxxxxxxxxxxxxxx>

Hi,

I like the reagent bottles because they are made of good thick glass. This means that they should be able to take about 50KV 250KHz each? Assuming each one has a capacitance of 0.5nF then putting 36 in parallel would yield 18nF. I could push a salt cap to its limits as it doesn't matter so much if it breaks.

I currently have a 30nF MMC rated at 30KV DC, but only used at 10KV RMS. I'd rather not risk blowing them. This gives me 1/2*30nF(1.4*10000)^2 =3Joules.

But if I use the 18nF salt cap at 50KV then I get 1/2*18nF(1.4*50000)^2= 44.1 Joules.

Also, because the salt caps would be wired in parallel then the peak current would not be limited by the transmission line effects of a MMC string. I think the pulse produced by a HV salt cap would be better than an MMC. Has anyone tried salt caps at higher voltage/energies? When do they start to break down?

Thanks

Chris R



----- Original Message ----- From: "Tesla list" <tesla@xxxxxxxxxx>
To: <tesla@xxxxxxxxxx>
Sent: Saturday, August 06, 2005 8:49 PM
Subject: Re: Salt Cap


Original poster: Just Justin <rocketfuel@xxxxxxxxxxxxx>


Interesting. Are you saying foil on the inside and the outside of the metal buckets?

That does seem like it would be significantly lighter than water-filled!


Justin



> Original poster: "Wilson Ng" <metalstorm2002@xxxxxxxxxxx>
>
>
>     Hey Chris,
>
>      Why bother with wine or beer bottles. You can use thin > plastic
> buckets for the dielectric. They are cheap and light weight. Just > put
> foil on the outer surface and stack them UP! No salt water needed!
>
>     Wilson
>
>