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Re: rolled caps
From: Geoffrey Schecht[SMTP:geoffs-at-onr-dot-com]
Sent: Saturday, September 06, 1997 10:26 AM
To: Tesla List
Subject: Re: rolled caps
Dr. R:
Why does the 90 mil PE have such low breakdown over time, in actuality? I
think I gave Coiler some bogus info....my reference quoted 1200V/mil at 25
deg C but that's from a book. This must be for completely homogenous PE; is
the commercial sheeting _that_ bad....230v/mil? Or, do the RF displacement
currents heat the stuff up badly enough to result in such low ratings?
Geoff
>
> From: DR.RESONANCE[SMTP:DR.RESONANCE-at-next-wave-dot-net]
> Sent: Saturday, September 06, 1997 12:48 AM
> To: Tesla List
> Subject: Re: rolled caps
>
> To: Coiler
>
> Keep the water far away -- use denatured alcohol to wipe off any dust.
>
> 30 mils will work at 7 kv -- keep each section to 7 kv and series the
> sections to get a total rating. A single layer of 90 mil material will
> usually fail with time above 7-8 kv.
>
> DR.RESONANCE-at-next-wave-dot-net
>
>
>
> >
> > From: Mad Coiler[SMTP:tesla_coiler-at-hotmail-dot-com]
> > Sent: Friday, September 05, 1997 4:16 PM
> > To: tesla-at-pupman-dot-com
> > Subject: rolled caps
> >
> > To all that have made rolled caps,
> >
> > I have just recieved my order of 30 mill LDPE sheets. I plan on making
> > the dielectric three sheets thick. This would be 90 mills, and I hopped
> > this would be enough for 12000V.
> > Question (1): Should you put aluminum flashing between each sheet of
> > the dielectric or just set three sheets together without anything
> > inbetween.
> > Question (2): I assume the plastic should be clean. Is LDPE sensitive
> > to soap, or should a damp cloth work fine to get the dust off?
> > Question (3): Will three layers of 30 mill also work for 15kV or do i
> > need more?
> >
> > Mad Coiler
> >
> >
>
>
>