Re: [TCML] Grounding a Tesla Coil (Yes, Again)

[Brandon Hendershot <brandonhendershot@xxxxxxxxx>]

> I'd be interested to find out more details.  That would be pretty  
> unusual, unless, perhaps the mesh wasn't hooked up to anything.

I'll try to find that webpage again for you.

> Are you operating your coil outside? or indoors?  If you're indoors,  
> running a long wire to the outside doesn't really help anything, and  
> could make things worse.
>
> How big is the coil?

I'm building the coil on my 2' x 6' windowsill. Once all the  
components are built and it's working right, I plan on incorporating  
it into a portable table.   I plan on keeping it indoors though.

It's currently running on a single 15/30 NST, potentially 2 if I can  
make a second MMC to balance it out. IIRC my seconadry form is 3.5"  
dia. with a perfect 4:1 ratio in the windings.

Thanks,
Brandon

On May 4, 2010, at 5:59 AM, jimlux <jimlux@xxxxxxxxxxxxx> wrote:

> Brandon Hendershot wrote:
> > Alright,
> > I'm hearing a lot about counterpoise whenever this comes up. I  
> > don't have a lot of room to work with here, I'm only 15 working out  
> > of my bedroom window sill. IIRC, there was a webpage on someone  
> > experimenting with counterpoise on their concrete garage floor, and  
> > he reported corona or plasma or something of the sort radiating  
> > from the plate to the floor.
>
> I'd be interested to find out more details.  That would be pretty  
> unusual, unless, perhaps the mesh wasn't hooked up to anything.
>
> If I were to roll out a bail of chicken wire in my front yard,
> > wouldn't that set my lawn on fire?
>
>
> No
>
>
> > This is why I opted to burrying copper pipe(s) in the yard to make  
> > up for a lack of horizontal space.
> > Oh, one more thing, does the physical position of the coil have to  
> > be on top of the counterpoise, or can I set it aside and run a wire?
>
> Yes.. put the coil in the middle of the counterpoise.  That way, the  
> RF currents flow in the counter poise, rather than down a wire, to  
> the counterpoise, into the earth, and then back to the top load.
>
>
> I don't
> > know if that's just to show the similarities of a plate in a  
> > capacitor or for whatever reason...
>
>
> The counterpoise (or the floor/earth) forms one plate of a capacitor  
> with the other plate being the secondary topload of the coil.
>
>
> > Thank You,
> > Brandon
>
> Are you operating your coil outside? or indoors?  If you're indoors,  
> running a long wire to the outside doesn't really help anything, and  
> could make things worse.
>
> How big is the coil?
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