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Re: Dielectric constant table
Original poster: "June Heidlebaugh" <rheidlebaugh@desertgate.com>
I use low density PE, but it has a lower melting temp than PP. Both work
well. Be sure to allow enough overlap length (1", 35mm) to prevent arc over
the edges. Robert H
----- Original Message -----
From: "Tesla list" <tesla@pupman.com>
To: <tesla@pupman.com>
Sent: Wednesday, September 24, 2003 8:15 AM
Subject: RE: Dielectric constant table
> Original poster: "Lau, Gary" <gary.lau@hp.com>
>
> Garden-variety polyethylene (PE) bags have the same dielectric constant
> as polypropylene (PP), and PE actually has a lower dissipation factor
> than PP (means lower losses/cooler operation). But with either bag, you
> still have the problem of impurities, trapped air bubbles, bulkiness,
> messy oil, and typically, inevitable failure.
>
> I posted a comprehensive tabulation of dielectric constants and
> dissipation factors to this list a while back, see
> http://www.pupman.com/listarchives/2003/March/msg00106.html.
>
> Gary Lau
> MA, USA
>
>
> Original poster: "Nick Andrews" <nicothefabulous@hotmail.com>
>
> Has anyone tried polypropylene comic book bags in cap construction? The
>
> really cheap ones are polyethylene, but the good ones are polypropylene.
> Some are mylar, but they are more, and I imagine won't work at HF.
>
> Nick A
>
>