Re: cap dielectric constant (K) of mylar

• To: tesla-at-poodle.pupman-dot-com
• Subject: Re: cap dielectric constant (K) of mylar
• From: Tesla List <tesla-at-stic-dot-net>
• Date: Fri, 18 Apr 1997 10:28:27 -0500
• Approved: tesla-at-stic-dot-net

Subject:  Re: cap dielectric constant (K) of mylar
  Date:   Fri, 18 Apr 1997 00:33:31 -0400 (EDT)
  From:   richard hull <rhull-at-richmond.infi-dot-net>
    To:   Tesla List <tesla-at-pupman-dot-com>


At 09:16 AM 4/17/97 -0500, you wrote:
>Subject:  cap dielectric constant (K) of mylar
>  Date:   Thu, 17 Apr 1997 00:30:02 -0400 (EDT)
>  From:   Noetic1-at-aol-dot-com
>    To:   tesla-at-pupman-dot-com
>
>
>Does anyone have data on the dielectric constant of 
>mylar? I found some at a very nice price...and it seems
>tougher than the polyethlene sheet..thought of using 
>it for the caps we're building...
>
>thanks, appreciate comments..
>
>Chris Dunagan
>
>

Chris,

Mylar or polyester is about k= 3 to 3.5.  It is terrible for Tesla
capacitor
construction and has huge dissapation losses of as much as 20% above
30Khz!!!!
Makes the best DC filter caps in the world!  Stay with polypropylene or
polyethylene.

Richard Hull, TCBOR

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