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Re: Seibt: Visualizing Standing Waves on a Resonator by Corona



Original poster: "Barton B. Anderson" <bartb@xxxxxxxxxxxxxxxx>

Hi Gary,

I have the #1 image which is what I've built to (so some degree). I'm using an NST (12/60) and simply static gap I had lying around. The driver I built similar but horizontal.

http://www.classictesla.com/seibt/siebtdriver.jpg

The driver is 5x the Seibt coils frequency as I am looking for 3 waves. Due to the geometric arrangement of the primary and it's external C on the driver secondary, simply moving the driver secondary left or right tunes the little maggy driver. I've had to move my corona wires out about 2 inches on the Seibt coil otherwise I get direct arcs from coil to corona wire (which is not wanted. We want simply corona edging toward the wires, not directly connecting).

Here is a pic of the basic setup of the Seibt, Driver, and NST.
http://www.classictesla.com/seibt/Img_2872.jpg

Pay no attention to the bottle cap connections. I had made a hookup mistake, but it at least shows the basics.

No pics of sparks yet. I've found the only way I can see the corona is in full and complete darkness. This isn't the type of coil that is spectacular like a Tesla Coil. This coil "really" needs to be complete darkness to see the corona wave patterns. I have tried to do pics yet of that. I actually sit in complete darkness a little just let my eyes adjust before firing up the coil. That is something that should be stated with this type of coil so that people don't get the wrong impression.

You'll note in Kurt's emails that he has successfully taken photo's of the wave pattern. Those are the best pics I know of to actually see what is going on. I think Kurt's coil is capable of 6 wave patterns, where my own can only do 3.

An NST however does work in a maggy configuration. Kurt is the one who suggested giving it a try. He was right, it worked.

Take care,
Bart



Tesla list wrote:

Original poster: "Gary Peterson" <g.peterson@xxxxxxxxxxxx>

Hi Bart,

I had a little better luck and located the following two images:

1) http://www.ntmsc.org/images/seibt_effect1.jpg
2) http://www.ntmsc.org/images/seibt_effect2.jpg

I'd like to see #1 reproduced for starters. One question is whether to stick with the classic circuit as illustrated or replace the induction coil with an NST, and the Leiden-jar pair with two matched MMCs. I'm leaning towards the latter. It's interesting to see that both circuits are, in essence, magnifiers.

A related HV Tesla demonstration that I'd like to see reproduced is "impedance phenomena," performed during his lecture "On Light and Other High Frequency Phenomena," February 24, 1893, before the Franklin Institute, Philadelphia, March 1893, before the National Electric Light Association, St. Louis. An image of this demo, Fig. 183 of "On Light and Other High Frequency Phenomena" posted at http://www.ntmsc.org/images/IRW_fig-183.gif, shows the same parallel arrangement of the break and series connection of the capacitors in relationship to the power supply transformer.

The apparatus can also be seen to Tesla's right in a wood cut of the 1891 lecture at Columbia; "Experiments With Alternating Currents of Very High Frequency, and Their Application to Methods of Artificial Illumination," May 20, 1891, before a meeting of the American Institute of Electrical Engineers (AIEE) in New York City (see http://www.ntmsc.org/images/columbia.gif). Note what appears to ba a single vertical conductor parallel to the vertical loop, perhaps mimicking the modified Seibt arrangement.

Gary

Subject: Re: Seibt: Visualizing Standing Waves on a Resonator by Corona
Original poster: "Barton B. Anderson" <bartb@xxxxxxxxxxxxxxxx>

Hi Gary,

I've been playing off and on with a Seibt coil with help from Kurt Schraner. But as far as correspondence or some type of original documentation, I am at a loss. Googling has turned up nothing. I'd like to see some original documentation myself.

Bart

Tesla list wrote:

Original poster: "Gary Peterson" <g.peterson@xxxxxxxxxxxx>

In regards to the thread "Re: Seibt: Visualizing Standing Waves on a Resonator by Corona" from May-June 2005, where can I find info on Seibt's original demonstration? We would like to attempt reproducing the effect at the TMSC 2006 conference.

Gary