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RE: [TCML] TC Newbie



Hi David,

Actually it is PETE Polyethylene Terephthalate. This is the common clear
plastic for water and carbonated beverages in every day use. It has high
dielectric strength but as I just learned from the group is losey at our
general coil frequencies.

Jim Mora

-----Original Message-----
From: tesla-bounces@xxxxxxxxxx [mailto:tesla-bounces@xxxxxxxxxx] On Behalf
Of David Rieben
Sent: Sunday, December 07, 2008 5:41 AM
To: Tesla Coil Mailing List
Subject: Re: [TCML] TC Newbie

Hi Gary, all,

I'm afraid that I don't recognize the acronym "PETA"
in reference to plactic. The only thing that I can think
of for this one is "(p)eople for the (e)thical (t)reatment
of (a)nimals" ;^) I know "PE" is polyethylene and HDPE
is high density polyethylene but I just can't figure out
what the "TA" means. Someone please enlighten me :^?

David


----- Original Message ----- 
From: "Lau, Gary" <Gary.Lau@xxxxxx>
To: "Tesla Coil Mailing List" <tesla@xxxxxxxxxx>
Sent: Saturday, December 06, 2008 11:25 AM
Subject: RE: [TCML] TC Newbie


PETA is a very lossy dielectric.  But even beyond that, I think that plastic

bottles are not a good choice for bottle caps.  Any time there is corona, 
visible or not, that will rapidly degrade and melt a plastic dielectric and 
result in a puncture, and that is true regardless of whether or not the 
plastic is a lossy dielectric.  Glass is much more resistant to corona than 
plastic, so glass bottle caps can survive even with corona.  Corona is the 
reason that commercial plastic dielectric HV caps are constructed as many 
lower voltage units in series - so that the voltage across each section will

be below the "corona inception voltage".

Regards, Gary Lau
MA, USA

> -----Original Message-----
> From: tesla-bounces@xxxxxxxxxx [mailto:tesla-bounces@xxxxxxxxxx] On
> Behalf Of Jim Mora
> Sent: Saturday, December 06, 2008 1:25 AM
> To: 'Tesla Coil Mailing List'
> Subject: RE: [TCML] TC Newbie
>
> Hello,
>
> I wonder if 1 or 2 liter PETE coke (or whatever) clear plastic bottles 
> could
> be used. PETE has a very high dielectric strength and puncture resistance
> and is thin enough to really raise the capacitance and lower the weight a
> bit. Maybe PE bottles which are thicker though.
>
> Jim Mora

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