Kapanadze Cousin - DALLY FREE ENERGY

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base of kacher conneted to ground

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wave form from receiver coil ,when base of tesla coil connected to ground

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Video without diode

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With diode

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this is a part of my vasmus replication.
if i am rt ,vasmus speak of summator his round transformer, the similarity is that ruslan and akula is using tv yoke.

may be the key to their free energy in mixing longitudinal wave which created in grenade coil and transverse wave from yoke coil . 

This is only closest and working wiring to get longitudinal wave. The diode plays a important point there . without diode you will not get this wave form.
I used 2 parallel 10 amp diode.

This similarity you can see in ruslan circuit I shared .if it is diode bridge it won't work and if you want connect ground .then connect to point of black lead of oscilscope. so the point to connect also play important point
Any other point the wave form disappear