Wow!  I havent managed to explode any bulbs yet - probably get me in a bit of trouble with the missus.  And my spark gap is about 5mm open.  I made the coil with the intention of increasing the streamer length, though I agree 100% that this wasnt what Tesla intended - Just a fun toy!  The streamers are just wasted energy. 
I'll try shortening the spark gap over the next few days, and playing with the length of the primary coil - just to see what results i get concerning the lamps.  I'll see if i can get rid of the corona, and light as many bulbs as possible....Wish me luck!
In a week or so I'll pick up a video-recorder and show you what I mean about the after glow of the lamps after being in the vicinity of my coil. 

Do you think, then, that a properly constructed coil demonstrates OU because the output power involved in lighting the bulbs exceeds the input power to the coil?  Have you tried building receiver coils to tap this OU???

Thanks again guys, for all your inspiration 

The holes punched by Tesla discharges don't explode the tubes! Thank goodness--what they do is to punch extremely tiny little holes in the glass, that then let the gas out, or the air in. You can' t see these holes and the leak might be slow--it might take hours for the gas to leak out. But they are there.

The corona streamers from your coil in the photos are not what I consider a true "tesla discharge". The true TC arc is a thick, purple ropy thing that doesn't divide like corona streamers do, and has a characteristic clean humming or buzzing sound, not a sizzle like corona. The TC discharge carries a lot of current, but the corona streamers don't.

I would say, in my photo above, that the primary gap was closed to less than half a millimeter. You wouldn't even think the system was running if not for the lights.

I think that, IF there is excess energy available from any Tesla configuration, that it must come, not from the coil itself, but from outside somewhere. That is, I think that a properly-tuned TC (not a sparker!) can maybe sometimes "pull in" or act as a receiver for energy that is sloshing around in the earth's Schumann cavity, or in other widely distributed capacitances that may be around, hanging out in energy fluxes like from the Sun or the earth's magnetosphere.
SO In my conception, the coil isn't creating energy, it's just transducing it. That is, if there is any excess there at all to begin with.

And I think that resonant systems of other kinds MAY also be able to tap into some of this stored, and replenished, energy in these hidden reservoirs. Hence my involvement in these threads.

That's looking more like it, but I still see some "noise" in there.


Re glass punctures:
Here's a paragraph from a link to a program for the Tesla coil demonstrator:

"An entertaining experiment is to bring an incandescent lamp bulb, held by its base in the assistant's hand, close to a rod held in the hand of the performer. The current slowly strikes through the glass wall, and, as the fracture increases, the air is let into the bulb. As the vacuum lowers the - color of the glow in the bulb changes from bluish white to red, then to purple and finally it disappears as the spark punctures the wall and finds its way to the wires inside."

From http://www.electrotherapymuseum.com/Articles/HintsEntertainer.htm

I don't think it's due to "shock waves", but rather the current from the coil heats a microscopic channel through the glass and melts it. Of course, at those voltages there isn't much of a distinction--the glass probably vaporizes in the tiny channel anyway.

There are some other links too, if you Google cleverly. I guess this demo is rare, because it does ruin the glow-tubes and they are costly.

Hi All,

I have received the new PCB's for the micro controller H-Bridge switch and is currently testing the software.

I will need a PM with a snail mail address from:

@Fausto
@Wattsup
@TinselKoala
@ramset
@duff

I will snail mail the boards as soon as I get an address to mail to.

Attached is a image of the new switch.
Have to solder on the transistors and put the circuit into a plastic box.

Best regards,
Groundloop.

Is this the version that uses the pic16f84a and allows push-button storage setting of a frequency?
I've already got the chip and the transistors etc.

ok, so i get basically the same thing here. but how do we efficiently down convert this voltage/current in the cap (500vdc) to something more manageable?  (say 110 or 220v) (some kind of converter?)

any ideas?

it should be simple...

@najman100,

I got the new switch up and running today. The logic part is using 80mA at 12,7VDC. The fan
is using most of that. The switch was tested with 12VDC input and the load was a 12 volt 25 watt
light bulb. The transistors was a little warm since I run with the plastic box top cover off. With the
cover on the transistors get an airflow and will be cooled. The switch itself uses too much current
as it is now when running without any load. This is probably due to timing issues. I will change the
software so that there is no overlap in the switching. Attached is a image of the almost assembled
unit.

[EDIT] I have worked with this switch into the night now. The "leakage" current when running without
any load is still too high. At low frequency the current is 0,1 ampere and at 1KHz the current is 0,8 amp.
This is really bad. It seems that the Darlington transistors (MJH11022) has too much gain and is too
much sensitive on the base input, to fully shut off. Tomorrow I will put in a normal power NPN and see
if the switch behave better. I will try the high voltage NTE2354. This transistor is probably much better
suited for a switch like this. If this fail also then we have no choice and must use HEXFETs. No modifications
is needed on the PCB, so far. Stay tuned.............

Groundloop.

@groundloop

The important is that the programing works as intended changing this to hexfet or other type of transistor  will not affect the design .
Thank you for all the ahrd work

Najman

@Groundloop

Fantastic stuff. I have a question.

Is a 330 ohm resistor the same thing as using a 330 ohm coil. What if you take leads out of each gate/source and connected each to a small coil, that makes 4 coils that could maybe turn a small rotor so the circuit could "do something" while running and trying to achieve OU on top of what is happening off the traditional output.

Maybe a more general question for circuit designs in the same line of thinking, could all resistors in a circuit be replaced by such a coiling idea. I have always considered a resistor to be a major point of wasted energy because they generate heat. Am I wrong in thinking this way.

- Off topic -

Something of possible interest. Last Friday at my shop we had to repair a chemical dosage pump and by chance I had a few identical used units that were removed from clients that had overall system changes. We had to do a quick fix because the client was running this on a 15 home mini-aquaduc so it is always a rush. Anyways the final problem was the circuit board that had to be replaced so I took one from a unit that had a good board but had a bad pump head and replaced the defective circuit. Now this got me thinking. This circuit is pulsing the dosage pump solenoid that I took apart also and brought it home. The pulses are fixed at 125 per minute but very strong dc to actuate this very strong solenoid coil that has great steel mass to initiate a very strong small outward attraction when it is energized. So I am wondering if such a circuit could be modified to receive a FG signal and pulse to faster rates.

If any of you guys just stop by a local water treatment company and tell them you are involved in energy research and you are looking for some used solenoid actuated chemical dosage pumps that they may be looking to get rid of. All of them should have several that are just lying around collecting dust and I am sure they would not mind letting you have one or more for free. The model I have is a Pulsatron Series C. Actually this could also be used for cavitation studies and you could also use it to oscillate a magnet in linear mode inside a coil and try to make another type of linear generator. The solenoid coil is very hefty and is 98.5 ohms and could also be used to do other resonance tests. Sorry for off topic but wanted to give guys new ways of looking for potential sources of parts.

Here is a link.
http://www.pulsatron.com/pumps/pulsatronelec/seriesc.asp

Now to start pulsing this solenoid coil.