[R-390] Some interesting info.

[Norman Ryan]

Hi, Scott,

Thanks for passing this on.  VERY enlightening.  Barry Ornitz is one
smart guy.

This is good material for the R-390A FAQ pages.  Al T., are you reading
this?

73 de Norman KG4SWM

scott wrote:
> 
> I thought this was a really good post on cap
> longevity.

> 
> From: "Barry L. Ornitz" <ornitz@tricon.net>
> To: Old Tube Radios <boatanchors@theporch.com>
> Subject: Re: Capacitor lifetime & a little info on new materials
> Date: Wed, 29 May 2002 19:34:26 -0400
> 
> Having spent most of my career involved in manufacturing
> polyethylene terephthalate polyester (PET, Mylar� is
> DuPon'ts variety), polypropylene (PP) and
> polytetrafluoroethylene (PTFE, Teflon� is the most common
> variety), and been involved in a few research projects on
> other newer materials occasionally used in capacitors such
> as polyphenylene sulfide (PPS), polyethylene naphthalate
> (PEN), and cyclohexane dimethanol modified polyester
> (PETG), I think I can address this issue.  I also am
> familiar with polystyrene (PS) and polyphenylene oxide
> (PPO) materials.

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