Thanks, David Rieben, you are right.
On Wed, Mar 26, 2014 at 7:27 AM, David Rieben <drieben@xxxxxxx> wrote:
> Hi Jim, Krux,
>
> IIRC, that may fall under the category of "electret".
>
> David Rieben
>
>
>
> From: Jim Lux <jimlux@xxxxxxxxxxxxx>
> To: Tesla Coil Mailing List <tesla@xxxxxxxxxx>
> Sent: Wednesday, March 26, 2014 5:03 AM
> Subject: Re: [TCML] Isolated secondary building up charge
>
>
> On 3/26/14 1:16 AM, Krux wrote:
> > So this is a new one for me, but then I have only built one tesla coil,
> so the whole hobby is new...
> >
> > Anyway, I was tearing down my tesla coil, as I had designed it so that I
> could take it apart to easily transport it if needed. I was carrying the
> 4.5" diameter secondary with top load attached across the room when I
> noticed it had a charge on it.. The charge was minimal at first, like if
> you are building up a static electric charge on something, and then when I
> was half way into the room it crossed into a "hey.. Ow.. Let's put this
> coil down on this bench here" level of painful zap..
> >
> > My best guess is that I was picking up on the magnetic fields that were
> being put off by all the florescent lighting in the room. Either that or my
> movement some how built up a static charge.. But has anyone heard
> of/experienced something like this before.
> >
> >
> this has been noticed by lots of folks. It's not magnetic fields, but
> electrostatic. Your coil has a nice insulating surface, so the secondary
> makes a fine capacitor.
>
> I forget what it gets called if you want to search the archives.
> "residual charge" would be a good start.
>
>
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