RE: door knob caps (fwd)

["Tesla list" <tesla@xxxxxxxxxx>]

---------- Forwarded message ----------
Date: Thu, 13 Sep 2007 17:46:07 +1000
From: T476202 A. Wang 2007 <tangara_02@xxxxxxxxxxx>
To: tesla@xxxxxxxxxx
Subject: RE: door knob caps (fwd)


D***ed, it takes only a few seconds before the whole darn capacitor gets 
really hot from those lossy terminals. Iron and steel have very high RF 
losses, and heat up quickly.That is the biggest reason why you DONT use iron 
in a TC circuit...

>From: "Tesla list" <tesla@xxxxxxxxxx>
>To: tesla@xxxxxxxxxx
>Subject: RE: door knob caps (fwd)
>Date: Wed, 12 Sep 2007 16:49:05 -0600 (MDT)
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>---------- Forwarded message ----------
>Date: Wed, 12 Sep 2007 10:51:32 -0400
>From: "Lau, Gary" <Gary.Lau@xxxxxx>
>To: Tesla list <tesla@xxxxxxxxxx>
>Subject: RE: door knob caps (fwd)
>
>So what it the terminals are magnetic?  If you're running a DRSSTC or
>other coil using higher than average primary current, the resistance
>(nothing to do with being magnetic) of steel studs may cause you
>problems.  But the weak link in doorknob caps is the plate construction
>and maybe dielectric losses.  The terminal material will make no
>practical difference.  And odds are that you'd need more than two
>doorknob caps for a tank cap anyway.  I use a couple eBay doorknobs for
>use in a Terry filter.  It doesn't matter what the terminals are made
>of.
>
>Gary Lau
>MA, USA
>
> > From: T476202 A. Wang 2007 <tangara_02@xxxxxxxxxxx>
> > To: tesla@xxxxxxxxxx
> > Subject: Re: door knob caps (fwd)
> >
> > So much for eBay...
> >
> > I bought a set of 2 doorknob capacitors on EBay, turns out the
>terminals are
> > magnetic...
> >
> > Magnetic materials=Iron related=BAD
>
>
>

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