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[TCML] Secondary self frequency



Does this sound strange to anyone. A 4" OD x 22" (windings) secondary using 22 gauge wire with a 4.5" x 18" spun alum toroid having a self res freq of around 515kHz? I ran the tests in the lab today and thats what im getting. For some reason though, I had reason to believe it was going to be much lower. I'm gonna resubmit this email next Thursday when I get a chance to get back in the lab and im gonna take a video of myself taking the measurements. Maybe im just doing something wrong. I just threw this website (http://www.teslamad.com) together just now for the purpose of this email. Please go check out the pics to get a better idea of whats going on. This coil isnt finished yet. You may have noticed the quickie ghetto gap and, my old rotary disc from an old BIG coil on my new RSG mount. In addition to my freq question above, I also have another... im not getting anywhere near what I expected to, performance wise with this coil. 2 - 6in max off a break out point. By the way, that toroid i just got in the mail today from OW landergren... Most amazing craftsmanship I have ever seen and extremely robust and heavy duty! Took it to the machine shop today to center tap it and it was "over" a 1/4" thick of aluminum in the center. Just google them.

I know everyone needs numbers to even begin to help me and I figure I'll resubmit a detailed report of my findings to the list like I said, next thursday. Hopefully then with plenty of data, pictures, video, etc... someone out there will say that catchy phrase "Well theres yer problem!" Thanks everyone! Hope you all enjoyed my new coil pics... even if it doesnt work hahahaha.

Regards,
Andrew Robinson

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