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[TCML] Re: Polypropylene vs Metalized Polyester

Gary,
I was afraid of that.  I was hoping they might be useful since I came into possession of a few hundred of these.

Skip

-----Original Message-----
From: Gary Lau <glau1024@xxxxxxxxx> 
Sent: Monday, November 11, 2024 7:03 PM
To: Tesla Coil Mailing List <tcml@xxxxxxxxxxxxxxx>
Subject: [TCML] Re: Polypropylene vs Metalized Polyester

Unfortunately, polyester, a.k.a Mylar, is not a suitable dielectric for Tesla coil tank circuits, it is too lossy and will overheat and fail in short order.  Polypropylene is what you want.

On Mon, Nov 11, 2024 at 6:59 PM <skip@xxxxxxxxxxxxxxxxxxxxxx> wrote:

> I have seen that polypropylene is the best choice for Tesla coils.  
> What would be the comparison with Metalized Polyester.
>
>
>
> I have "inherited" a good quantity of Metalized Polyester caps from 
> Wesco at .033uF / 15KVDC.  Would these be good tor Tesla Coil use?
>
>
>
> Skip
>
>
>
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