Tesla's "COIL FOR ELECTRO-MAGNETS".

[Farmhand]

Oh I see, yes, I think  when the primary capacitors are being charged they are in series with the supply and the charging inductor.  but when they are being discharged they are in parallel with the primary.

I think it's always both, unless the capacitor does not discharge Tesla style. Then a series capacitor is just a series capacitor.

It's the finer points that are difficult to explain, I see you understand it well Gyula. Misunderstanding on my part, sorry.

Cheers

[sparks]

  I always thought that in a Tesla transformer oscillations in the primary are maintained by the power supply and coupled to the secondary through the capacitance of the gap.  As  the oscillations are damped in the secondary the energy stored in the primary is passed into the secondary via ac coupling of the two tanks through the capacitor the gap represents. This makes the whole transformer self-regulating and increases voltage to be distributed to loads far more efficiently than the pole pigs westinghouse was selling and continues to sell to this day.

[Farmhand]

Tesla sometimes used arrangements such as mine, near the beginning of the Colorado Springs Notes he mentions that he sometimes did not bother with primary "resonance" caps he didn't put it quite like that, but he showed an arrangement with two primaries as well one primary with the resonance caps to reinforce the secondary but not directly powered and another primary coil with the spark gap in it's circuit. And he mentions that it's not always necessary if the primary rings well enough. When we use mosfets the primary is connected to the caps for half the cycle of the sine through the body diode when the current reverses.

It can be done many ways, the objective is to get a wave with as little damping as possible by having a high "q" isn't it. What's the "q" factor of a primary of 1 turn with next to no inductance and resistance and with 14 nF (which is in series with the primary I think when resonating), I do not know. But from doing it I can see it's better not have it. in a rotary spark gap the gap is over an inch when the shorting bar is not there. I don't see how it can couple. My transformer works, did you see the video ? rather than have primary tap points on a multiple winding primary I used a "regulating coil" as Tesla did, and at the bottom of the secondary is another one for fine tuning to different experiments. In a low voltage setup it's easier to have tuning capacitors. but with HV coils are easier. My transformation rate does not change with adjustment I don't think. Transformation rate is about 1:200, with around 4 to  6 kV input mostly. Of course I don't think it's developing 1.2 million volts, quite a bit less than that more like a couple of hundred kV.

Don't be fooled by the wooden frame on the spark gap, it's dodgy looking but finely adjusted, at the end of a long run at high power and low break rate the shorting bars are just clipping the electrodes due to heat expansion. that's the noise at the end of the clip.  At higher break rates the power drops off because resonance in the charging circuit is passed. I can go to break rates over 2 or 3 kHz if I want. 

The hard white conductions heat up the gap more I think. The power is restricted to about 500 or 600 Watts. See the twirling of the arcs it makes double helix arcs and pictures can have like fingerprint looking type arcs due to shutter time which is kinda cool. The helices twist up then throw themselves apart if they don't find a hard conduction, if they do they seem to twist back down again..

Link again. Enjoy. Sound Warning it loud.
http://www.youtube.com/watch?v=1nkJtrKCdFg

Cheers

Sorry to go off topic but the resonance aspect is very prevalent in Tesla's patents I think.

If I put another ground connected and tuned resonant coil near it the second coil lashes out at the first and it can light incandescent bulbs from what would be the primary of the second coil no problem. Tesla did those kinds of experiment so I tried it it works. I don't think there is much to doubt about the majority of what he says but only if he is the one who said it.

...

[synchro1]

Please show me where did Tesla write his coil construction (defined in his patent) is to be charged first with high voltage and then use it with a lower voltage?

Did you check whether the nail manifested a remanent magnetism after your 12V charge up treatment? (I am not saying your nail manifested remanence magnetism, just a possibility for explaining your test result.)

When I did my own tests first with paper clips I noticed that due to the inherently very small touching surfaces of the clips the tests were not fully convincing for me, even though the difference in the number of lifted clips was evident,  and when I repeated the tests  I decided to change the clips to small sized nuts: http://www.overunity.com/11350/confirming-the-delayed-lenz-effect/msg357952/#msg357952 
So the small nuts have made the tests more convincing for me and more repeatable.  I suggest you also use small nuts or just cut up your "trombone" clips to many small (say 3 or 4 millimeter long) pieces and do the tests again. 

Here is your post from last night and I highlighted some words in your text I wish to answer:

Well,  see the first picture Magluvin uploaded in his post here:
http://www.overunity.com/13460/teslas-coil-for-electro-magnets/msg359705/#msg359705
He has wound nice coils, precise and tight, no lash winding on his nails, right?  And he did find equal performance for the single and the bifilar (SBC) coils just like I did with my 'lash' winding.  So we got the test results independently from whether the windings were precise or lash, right? 

Gyula

I restored my laptop and plan to video tape and upload the experiment for you to let you decide what to make of it. The SBC stores it's pico farad capacitance in kilovolts and nano amps. A 100 turn SBC has 250,000 times the voltage potential between the wraps as a single wire coil. How do you imagine this power gets into the coil if it's not sent there? The high voltage spike from the magnetic field collapse charges the SBC to full potential. This happens automatically when the coil's pulsed, but you need at least one strong field collapse to generate the high voltage that's stored in the bifilar windings. The collapse dosen't effect the single wire coil because it lacks the storage potential. This high voltage storage capacitance eliminates reactance to current direction change in the coil windings, and generates double the field strength from the resulting Lorentz force. I got the experiment to work. You're asking me why yours caused trouble. Please put your thinking cap on!

Electrons are attracted to one another as they pass head on. There's no influence between them on the perpendicular. The head on electrons turn when there's no reactance to direction change from the high bifilar windings potential. Imagine two electrons orbiting each other. What happens? Think about it!

[Magluvin]

I restored my laptop and plan to video tape and upload the experiment for you to let you decide what to make of it. The SBC stores it's pico farad capacitance in kilovolts and nano amps. A 100 turn SBC has 250,000 times the voltage potential between the wraps as a single wire coil. How do you imagine this power gets into the coil if it's not sent there? The high voltage spike from the magnetic field collapse charges the SBC to full potential. This happens automatically when the coil's pulsed, but you need at least one strong field collapse to generate the high voltage that's stored in the bifilar windings. The collapse dosen't effect the single wire coil because it lacks the storage potential. This high voltage storage capacitance eliminates reactance to current direction change in the coil windings, and generates double the field strength from the resulting Lorentz force. I got the experiment to work. You're asking me why yours caused trouble. Please put your thinking cap on!

Well, you have to understand. We were doing the nail experiment as it was described. It did not work. So in reality your experiment has added ingredients as compared to the 'experiment' from the web page.

But if there is something missing, I would be happy to see it.

Is your nail ending up permanently magnetized in the process of kicking it with HV? That is the first thing that comes to mind of what might happen.

Looking forward to the vid.  Before you stated  the use of KV, I thought you meant precharging the bifi like below.

Mags