Nice work forest!  Have you built something yet that is generating excess power based on this concept?  I haven't dug into much yet but it sounds like it would not be too complex. 

  When I downloaded the Utkin document it seemed like a lot of pictures or diagrams were missing.  I then 'printed' it to my PDF printer (saves it as a file) and when viewing in PDF I could then see all the diagrams or pictures.  This may be due to my older version of MS Word but if others have this problem maybe put it up here as a PDF or I can upload the one I made. 
   Thanks for making this open source GPL.

http://www.overunity.com/index.php?action=downloads;sa=downfile&id=473

Quote from: forest on May 27, 2011, 01:24:49 PM
http://www.overunity.com/index.php?action=downloads;sa=downfile&id=473

thanks forest

Have you ever thought why core of high permeability was used ?  Is that really required ?
Maybe measure capacitance of output side and think how to down resonant frequency 

Forest, excellent find this Utkin paper ! It explains everything needed in laymans terms, shows the 'why' and an answer verified by test results.

Combine those secrets and there is your free energy generator. Use switchable inductance in your primary and you get source ringer that runs by itself, it needs safety spark gap so it does not blow up. Put capacitor with high voltage rating and select spark gap so that it fires before capacitor rating is exceeded. Maybe lightning strike protectors could be used here. Higher rated capacitor gives higher power output (unless primary core saturates first). Then you collect from this magnetic field using n-secondaries.

The Utkin paper showed tube and secondaries were inside. In the Tesla patent receiver looks exactly like the transmitter so the receiver is also a transmitter at the same time. Could this 'coils in a tube design' work another way around ?

You would take ferrite rod, wound one layer bifilar primary on it and connect it using switchable inductance. On top of this you would put ferrite rings and separate them using plastic spacers e.g. CD's. Use of spacers would make secondary winds easier as you put more rings around rod. Secondary wind should use matching capacitors as explained in the Utkin paper.

Now, if this works then why not put another layer on top of secondary to get even more power ? Bigger ferrite rings that fit on top of secondary ferrite ring + winding, then you wind third round of coils and use matced capacitor again. Next layer should have thicker rings from previous to prevent saturation as power increases in each layer. The width of each layer should stay the same, this makes windings easier.

As each layer would have bigger coils then smaller caps are needed to get it to same frequency with primary. You would get power from each layer ! Those ferrite rings should work like magnetic diode and back-EMF would stay entirely in the layer that created it.

End result, a gun that fires a gun that fires a gun ... that fires a BFG (Big Fucking Gun).

It should be easy to test this, core material needs to be such that it can handle the selected frequency. I said 'ferrite' only because it is cheap, better materials could be used. Core which can handle higher frequency is always better and core whose saturation point is higher is also better. Higher frequency gives more power and you can use smaller caps. All wire should be tin-coated as we need the best possible magnetic field with shortest amount of wire. Maybe insulated wire is needed, this depends how the core behaves. How far from the inside of ferrite ring its magnetic field can get, can some of it reach the previous layer ? There is no wire inside ring so distance should be short, experimenting is needed here.

If anyone tries this then please post results here, even if it does not work. If this design works and design is original, then it should have a name. Those rings look like stripes when looking at cross section so lets call it the Bumblebee Power Amplifier, lol. As you know, scientifically speaking bumble bee cannot fly. Well, little bee does not know it, it just flies, hence the name.

PS. This switchable inductance circuit, if there are problems getting it to work, I made circuit with similar idea about three months ago. It used spark gaps, but it could work without them, or caps in place of spark gaps. With spark gaps it produced voltage and current ratings so high that my meter was unable to show them. Also it sucked more power from ground connection. But I don't have a scope so cannot say what was actually going on. I can post about it later if anyone is interested.