Re: mylar vs. poly

[FutureT-at-xxxxxxx (by way of Terry Fritz <twftesla-at-xxxxxxxxxx>)]

In a message dated 11/9/00 1:45:30 PM Eastern Standard Time, tesla-at-pupman-dot-com 
writes:

> Original poster: "Hansens" <gldhansen-at-rcn-dot-com> 
>  
>  Hello,
>   Is mylar a good dielectric material for home-built caps compared to
>  polyethylene?  It's dielectric constant is listed as 3.8 - 4.0 (probably
>  more like 3.6 - 3.7 for homemade caps).  What about pricing?
>  
>  Thanks,
>  David Hansen

David,

Mylar is extremely lossy,  you'll need 15% more power for the same
spark length, and it will heat up in use, and the capacitance value will
change, etc.  not good.   but it can work.

JOhn Freau