Re: TC Secondary Currents - was ( Experimental Help - Terry?)

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Terry Fritz" <twftesla-at-qwest-dot-net>

Hi Richard,

There is a problem with this experiment :-(

Pearson CTs are electrostatically shielded.  This shield will provide an
alternate path for the current so the measured current will be far less
that we want.  Look at a Hughes Aircraft version that does not have the
green epoxy all over it:

http://hot-streamer-dot-com/temp/Hct.jpg

The current is going to capacitively couple to the aluminum (brass in
Pearson) body and be guided along the outside of the CT instead of through
the center where the measurement takes place.

http://hot-streamer-dot-com/temp/displacement-1.jpg

Although the CT is transparent magnetically (there is a gap in the center
of the hole to prevent a shorted turn effect), they are not transparent
electrostatically which is essential for our experiment :-(  The Hughes
does unscrew but the internal parts are unstable without the shell and just
the wire in the internal loop would have the same (although smaller effect).

We could concentrate the electrostatic fields within the hole with a
capacitor but perhaps this is cheating :-))

http://hot-streamer-dot-com/temp/Hct-1.jpg

I bet I could turn the cap 90 degrees (a smaller cap) and still read the
same current:

http://hot-streamer-dot-com/temp/90dis.jpg

This would tend to directly contradict things but Maxwell's equation for
Ampere's law has that neat surface integral in it to cover their hind ends
in such events...

Like trying to see oneself in a mirror, only to see another mirror...  The
answer eludes us in the complexities of physics...

The Devil is in the details...

Cheers,

	Terry



>At 08:04 PM 3/3/2002 -0500, you wrote: 
>Terry,  list,
> 
>Hi Richard,
> 
>You would need a fairly high frequency to drive enough current through the low
>value of such a plate capacitor (those big 10.75" hole current monitors would
>be nice here) but here is a diagram of the setup.
> 
>http://hot-streamer-dot-com/temp/displacement.jpg
> 
> 
>Terry, this is exactly the experimental set up I proposed.  So, has it been 
>done?  Probably easier to drive a flat plate air capacitor since air 
>dielectric constant  is near one.  While I'm not an expert on the mythical 
>"displacement current" (shudder), which way are they suppose to flow.  With 
>or against normal circuit flow?  BTW, as a control one should measure the 
>current flow in the leads up to the capacitor and compare it with the 
>Pearson "displacement current".
> 
> 
>My plane wave antenna below also measure displacement currents but through
>electrostatic means not magnetic as the Pearson thing would.
> 
>http://hot-streamer-dot-com/TeslaCoils/MyPapers/planant/waveant3.html
> 
>Oddly, I never used the term "displacement current" in this paper.  An obvious
>flaw :-( 
> 
>No flaw here since you're are not measuring a "magnetic field" produced by a 
>displacement current.  You're measuring just plain good old electrostatics 
>in an air capacitor.  Some would say produced by longitudinal currents.  :-) 
>  Does anyone dispute there are longitudinal compression like ES forces in 
>capacitors?
> 
>RWW
> 
> 
>Cheers,
> 
>        Terry
> 
>>  
>> Can you give an experimental reference to this mysterious magnetic field
>> around this "displacement current"?  Can we measure it magnetically?
Could a
>> small flat plate capacitor placed in the center of a Pearson current
>> transformer measure this current?  It can sure measure the current in the
>> leads up to the capacitor.
>>  
>> RWW
> 
>--- Richard Wayne Wall
>--- rwall-at-ix-dot-netcom-dot-com
> 
> 
>