9/30 Tesla Coil - Closer to resonance.

[TeslaNick2]

The reasons your coil ain't working is because you're clearly not in resonance, you cap is too small, making a larger secondary is gonna make this worse You are waaaayy over coupled and have also chosen to use helical primary which makes tuning harder as it has very narrow 'sweet spot'. the recipe for a good coil design is to pick the ideal cap for the power supply you have and work backwards. Oh year, your torroid is WAAAYYYY too small....

A fan or vac on the spark gap also really helps..

[gt4awd]

This is the first Tesla Coil I ever made. The main problems with the setup was the tank circuit wiring being too small/extended, thus having too much resistance, and the toroid having too many sharp points. Yes, it was not in resonance in this video either. However the maximum streamer length I was able to obtain from this setup was a little over a foot length. If you check my newer videos I have built a very professional spark gap coil. It creates streamers over two feet long with the same NST.

[paranoiadmin]

hi i was wondering why you have resistors over your capacitors, im guessing they are there  so that you are sure there is no remaining charge after use?

[gt4awd]

Yes, the resistors are there to discharge the entire MMC setup after use. I've heard it also takes strain off the first few capacitors in series.

[hardstyle905]

nice one. i like the streamers

[gt4awd]

Glad you like the streamers. Check out my newest Tesla Coil video. Streamer lengths more than doubled with my new setup... The coil also occasionally produces floating streamers, which is rare, especially for a spark gap Tesla Coil.

[OneMadCow]

Coil is cool. I'd learn the finer points of operating a video camera, though.

[LyrumusX]

if you increase the overall timing of the circuit and reach a much higher resonant frequency... say somewhere in the low MHz band, you should get more interesting effects. Then if you build another coil that is in tune with the first, you could wirelessly x-fer and capture the energy via electrostatic impulses. That would be cool too :P Then if you could modulate the impulses, you could send data and power in the same broadcast ;) Also cool!

[texasholdemdown69]

Do we care that we're witnessing the breakdown of molecules in the air? Your electric field is liberating and then mobilizing electrons in air molecules. what are you trying to accomplish?

[gui577b]

It seems really weak for its size. I have a T.Coil half that size that produces similar length streamers. I think maybe that crumpily toroid is robbing you of capacitance.

I use two metal salad bowels soldered together.

[gt4awd]

Well, you have to first remember that most coils this size are being powered by a higher amperage circuit. I decided to make the secondary large incase I raise the power levels. There were other adjustments I made to the coil such as better tuning, secondary height, topload heigh, after this run. The toriod is definitely an area of impovement though.

[kanyenke12]

i like that i want to build one

[gt4awd]

It's not something you just throw together in a few days. Takes lot of time to study everything including safety, construction, components, etc... I wouldn't recommend building one unless you enjoy the science behind it. Not just the cool streamers a coil can produce.

[boxa888]

hey what will it look like at resonance. ive been studying this through an old electricity book and its talks about 100% unity in a science book through resonance. the energy is transfered at 100% but it doesnt show any pictures of true resonance. i read how the coil of wire, capacitor and frequency has to be right. it also talks about 0 resistance at resonance which is pretty sweet.

[gt4awd]

I can't be exactly sure, but I will say what I have learned. Our "Tesla Coils" are tuned to 1/4 resonance for maximum streamer lengths. My assumption would be that full resonance with both the LC circuit, and free resonator (secondary) produce transfer of the amperage, instead of the "transformer" effect into mostly electrical potential. Full resonance may have been what N. Tesla planned to use for his wireless system of power.

[itsliptout]

Nick is given credit for the very amusing COIL....How many are aware of the numerous modern day convieniences- directly resulting from this great inventer...including this COMPUTER!!

[gt4awd]

To be precise the computer "AND" Logic Gate, a very important element of all computer related processing. Nikola Tesla was the inventor of Radio, Basic Robotics, Alternating Current (his most important invention), the polyphase electrical distribution system, AC induction motor, X-rays, Fluorescent Lighting, etc...

[itsliptout]

Thanks...do you know how to define FUZZY LOGIC???

[gt4awd]

Kind of like when I seem to sit looking at something for over a minute in a complete brain freeze?

For some reason I find myself thinking about why I am not thinking. Yes, strange, I know. I don't know why. Just glad I don't have any of the extreme phobias Nikola had, and he had quiet a few..

[itsliptout]

Most creative minds are.....PHOBIA DRIVEN

[gt4awd]

I need to get my new setup finished already. It will all be built into a nice portable base unit I made out of oak, and added small wheels with safety locks. The new primary will be 1/4in copper tubing, 50 feet length, about 15-18 turns total. Going with flat spiral this time, not a conical primary. Also, working on a miniature magnifier coil setup in spare time. Today I built my RFI filter a cheap wood case with switch, and power indicator light.

[rutgersemp01]

X rays where discovered by some guy named röntgen, not by mr tesla ;)

[DarkTrunksGeorgeSim]

But tesla developed the means for today's Xray photography.

[boxa888]

im sure he invented alot of things that were stolen.

[Sparrow338]

You should be able to increas the value of your tank cap and then you could tap your primary at a lower turn. Other than that it looks pretty nice, good job. :)

[gt4awd]

"So I must tap a little over resonant to avoid the problems right now." The problems were actually created by tapping over resonant. I think the coil is almost tuned now. Tapped at turn 8.5, but still not much more than 12-14" streamers. Each connection to the primary coil is about 20" though. So that would create a lot of loss i'm sure.

[gt4awd]

Teslapigeon, you were right about something being wrong. After messing with the primary tap point I found I had the coil tapped over resonant. Oh, and my primary only has ten full turns... LOL, I guess I forgot how to count? I'm still trying to find the tap point. It should be around the start of turn eight according to TeslaMap, but my primary coil has a lot of imperfections so I doubt thats accurate. What should I look for when tapping the primary, other than longest output, of course?

[gt4awd]

That would not work out. I am already having some minor problems with secondary to primary corona and visible streamer from secondary to top primary winding at full power. I just recently found out conical is the worse to use with NST due to the electrical potentials of the secondary and primary. So I must tap a little over resonant to avoid the problems right now. At least until I make a new flat spiral primary.

[teslaspigeon]

you should be able to get around 30 inches with your power "maybe " just keep at it i would raise your primary or lower your secondary

[gt4awd]

I do plan on making another primary coil. I decided on the conical coil because of the size magnet wire and diameter of the secondary it can stand higher coupling using only a 9kv 30ma NST. Just wondering, what makes you think something is wrong? Max streamer in air at full power is about 12-14". Remember its humid, and the Terry filter also cuts down the power some.

[teslaspigeon]

do away with the daft conical primary and do a flat spiral then alighn the primary more closely to the level of the secondary windings flat is easier and better looking get 1/4" copper tubing something isnt right somewhere lad!! them tesla listers should be helping you more !

[gt4awd]

After shortening the length on both sides of the secondary the coil performs even better. At one gap the small 1/2" streamers grow to around 3". About the same output as the two gap run shown in this video. I will upload another video with the secondary adjusted in a few hours. It's also very humid where I live right now. I'm sure thats impacting streamer lengths some.