A Kapanadze generator replication - Febuary 2013

[jbignes5]

Hello All.

I'm sure most of you will have visited this site, however I revisited and was reinspired. Have a look, it is well worth it!!

http://www.free-energy-info.com/Utkin.htm

Cheers Grum.

PS, I found out I had reinvented the Asymmetric transformer!!! See page 1081, main thread. Almost no one made any comments!!!

It's a very decent resource for looking at the systems we want to design. But some aspects are modified from the original documents. Case in point the special transformer made by Tesla for his 1892 lecture. In the lecture it states to use wood as the core and in that link it says to use a ferromagnetic core. Don't know which one is right at this point... I tend to lean towards Tesla lecture to be right. But who knows.

[Grumage]

It's a very decent resource for looking at the systems we want to design. But some aspects are modified from the original documents. Case in point the special transformer made by Tesla for his 1892 lecture. In the lecture it states to use wood as the core and in that link it says to use a ferromagnetic core. Don't know which one is right at this point... I tend to lean towards Tesla lecture to be right. But who knows.

Hello jbignes5,

I too noticed that mistake. I feel, like you, that a coreless design will be better for higher frequency. It is still too cold here for me to venture out into the workshop but I have not been ilde. I bought a little PWM module specificlly made to drive Ignition coils (any one can PM me for the details) It is quite capable of 50Khz. However at that frequency you can only run it for short periods of time. But what I noticed is that all sorts of things laid around the operational area were alive. Sparks off bit's of wire, my solder coil burnt my forearm. etc etc. I am going to look at the copper glass aluminium Idea of Don Smith. There maybe, pardon the pun, some potential
Cheers Grum.

[phoneboy]

@ Grumage, be careful with the Utkin doc there are some errors in there, one in particular is the pic of the Tesla bifilar flat coil with the E field eminating straight outward,  the magnitic field is right but the induced E field from it should be circular and in the opposite direction of current flow.  Tesla was a smart cat, why do you think in his diagrams you see one turn inductors with flat coils inside, because flux density is higher inside so the induced E is higher inside and it pushes on those free electrons in a circular direction just like his secondary is wound.  Funny thing though, even with the errors the secret is in that paper too.

[Qwert]

See page 1081, main thread. Almost no one made any comments!!!

Pointing out a message using page number is extremely inconvenient, since depends on your personal profile message settings and can be set as 5, 10, 25, or 50 messages per page. Here it corresponds to two settings: 5 or 10. Please, use "REPLY #" or http address instead, to point out a message.

[TinselKoala]

Hi Tinsel

Amazing 'cold fire' on video, how much was output voltage 30KVs? Can you explain me why run up (plasma) spark on jacob ladder?

Yes, 30 kV or perhaps a bit more when I up the input to the driver. You'll note that I have the flyback transformer totally immersed in oil for insulation and cooling.

That is not "cold fire"... far from it. There is so much power in that plasma that it actually burns the nitrogen in the air to nitrogen dioxide. Even a small JL will burn enough nitrogen to make a significant amount of NO2. This is one big advantage from using the ZVS driver: it is very efficient at transferring power into the load.

The plasma runs up the ladder because it is hot; convection currents in the surrounding air carry it upwards until the gap is so great that the plasma breaks up and stops the current.... then the voltage causes the arc to re-strike at the narrowest gap of the electrode set.