Re: [TCML] Stuck at 36"

[G Hunter <dogbrain_39560@xxxxxxxxx>]

Wiki says Formica is a paper or cloth laminate impregnated with melamine resin.  It sounds a lot like phenolic or garolite with a glossy finish.  I'm guessing the resin is laced with dye or metal flakes (or both), since it comes in a variety of colors.  I doubt it is suitable dielectric for RF pulse caps.  Not a big deal, since polyethylene and polypropylene sheet and film is widely available to home-brewers.

Greg


--- On Sat, 1/17/09, Ed Phillips <evp@xxxxxxxxxxx> wrote:

> From: Ed Phillips <evp@xxxxxxxxxxx>
> Subject: Re: [TCML] Stuck at 36"
> To: "Tesla Coil Mailing List" <tesla@xxxxxxxxxx>
> Date: Saturday, January 17, 2009, 7:43 PM
> It's doubtful that Formica is manufactured with strict
> attention to absolute purity and consistency, since in a
> countertop, no one cares about that."
> 
> 	Most phenolics are very lossy at radio frequencies and
> certainly would make a lousy dielectric for capacitors.  I
> tried using some epoxy-glass circuit board material for the
> same purpose and the capacitor Q was only about 25 at 200
> kHz.
> 
> Ed
> 
> 
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