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Re: [TCML] New Torroid



Hi Tony,

That's a nice, clean looking coil... and its throwing some very mean looking sparks!

Some potential suggestions:

Reduce the overall height of the system by reducing the length of the bottom legs. This will give you more top clearance to reduce strikes to the ceiling, conduit, plumbing, or (heaven forbid) fire, burglar alarm, or loose CAT5 wiring.

If the toroid is too high (versus the secondary), you may develop a conical region of "Christmas tree" corona between the top of the secondary winding and the primary that can stimulate secondary:primary strikes or racing sparks along the secondary. Try reducing the height of the main toroid, increasing its diameter, or add a smaller (15 - 20" diameter) field grading toroid between the secondary and existing toroid. These measures will reduce the E-field gradient seen by the top of the secondary, increase effective shielding, and help throw streamers outward, and away, from the primary.

In one picture it looks like you may be using a large alligator clip as a primary tap on the top side of the primary. This can be a tempting target for streamers or even strikes from the upper portion of the secondary winding. Try tapping from below if you have sufficient space. In any event, minimize projecting height of the tap above of the primary winding so that you maintain a smooth E-field at the primary's top surface.

Good luck and best wishes,

Bert
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Sfxneon@xxxxxxx wrote:
Hello everyone,

I finally got around to taking and uploading some pictures today of the coil that I have been working on. This is just how it looks now during the beta testing and mobilization phase to make it portable and easy to set up. My shop is located in the Depot Entertainment District in downtown Lubbock Texas, and it has certainly been entertaining for all the neighbors!

Take a look-see if you are interested, and I welcome all comments and suggestions. There's also a short 20 second (5Mb) MPEG 1 video clip at the end of it in action if you want to watch or download.

http://ImageEvent.com/thepacratz/teslacoil/8inchcoil

Tony Greer



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