Re: Low-powered coil definition (fwd)

["Tesla list" <tesla@xxxxxxxxxx>]

Original poster: List moderator <mod1@xxxxxxxxxx>



---------- Forwarded message ----------
Date: Wed, 13 Dec 2006 08:11:41 +0800
From: westland <westland@xxxxxx>
To: Tesla list <tesla@xxxxxxxxxx>
Subject: Re: Low-powered coil definition (fwd)

I was wondering what to do with the RF ground as well Gary.  I'm a bit 
wary of connecting to the mains ground, because I think that would tend 
to cause some of the TC power to be pulled over to the mains circuit.  
(I was previously planning simply on connecting the RF ground to the NST 
case, and not bringing a mains ground to the NST).   Ed Phillips in an 
earlier post provided arguments that because the TC is not a 
transmitter, rather keeps most of its energy balled up around the 
secondary, that a counterpoise -- maybe a cloth under the coil, and the 
strike rail -- (with a dedicated ground if you are lucky enough to have 
one) would be sufficient -- his argument that the RF ground is the 
second plate to the toroid capacitor.  But he follows by suggesting that 
the counterpoise be grounded to the mains ground.  So I still don't know 
what to do since I'll be initially running this in my apartment (or a 
University lab if I can convince one of the EE profs to let me use one 
of theirs -- the ideal solution :-)   ).   I suppose that it depends on 
how much RF energy there is away from the coil to short into the mains 
ground.... with an antenna there is a lot floating around far away from 
the transmitter; in a TC comparatively little.

I'd be interested to hear other views

Chris


Tesla list wrote:
> Original poster: List moderator <mod1@xxxxxxxxxx>
>
>
>
> ---------- Forwarded message ----------
> Date: Tue, 12 Dec 2006 09:02:00 -0500 
> From: "Lau, Gary" <Gary.Lau@xxxxxx>
> To: Tesla list <tesla@xxxxxxxxxx>
> Subject: Low-powered coil definition
>
> Ed Wingate - I'm surprised that you haven't chimed in here ;-)
> When Ed runs his monster pole pig-powered magnifier (see
> http://home1.gte.net/res07cmo/hv/wingate/wingate.htm), he routinely
> connects the secondary base to the mains 3rd wire ground in his Tesla
> lab, with no ill effects that I'm aware of.  So unless YOU want to tell
> Ed that his coil is low powered, I would reject your definition.
> Granted, his lab is a structure separate from his house, and I wouldn't
> dream of doing the same in my house with a coil powered by anything that
> I wouldn't want dropped on my foot.  
>
> Gary's "low powered coil" definition:  If you can deliberately drop the
> transformer on your foot, it is "low powered".
>
> But in all seriousness, this is one area of coiling that is seriously
> lacking any real data.  No one has EVER scoped or measured just what it
> is that we suspect and fear would be contaminating our power lines.  I
> think most of us have some opinion on this, but no one can defend it
> beyond "this is what I do and I've not destroyed anything".
>
> Regards, Gary Lau
> MA, USA
>
>   
>> Date: Tue, 12 Dec 2006 00:05:54 EST
>> From: Mddeming@xxxxxxx
>> To: tesla@xxxxxxxxxx
>> Subject: Re: Can anyone diagnose problems with our coil? (fwd)
>>
>> While the definition of a low-powered coil is iffy, a low powered
>>     
> coil
>   
>> can be safely connected to the mains ground.
>>
>> Regards, Gary Lau
>> MA, USA
>>
>>
>>
>>
>> Hi Gary, All,
>>
>> How about this as an operational definition of a low power TC?
>>
>> A low power TC is any one which, when grounded to the power mains
>>     
> ground
>   
>> connection, does NOT blow out other electrical devices in your house,
>>     
> neighbor's
>   
>> house, school, neighborhood, etc.
>>
>> Matt D.
>>     
>
>
>
>   


-- 
____________________________________________________

J. Christopher Westland, PhD CPA
Professor, ISMT, University of Science & Technology, HK Clearwater Bay,Kowloon, Hong Kong
Tel: 852 2358 7643
Fax: 852 2358 2421
Mob: 852 9528 1745
URL: ihome.ust.hk/~westland
Mobile e-mail: chris.westland@xxxxxxxxxxxx