Kapanadze Cousin - DALLY FREE ENERGY

[Grumage]

The cleanest way to determine the fundamental acoustic standing wave frequency of the entire core is to vibrate the ferrite mechanically without the magnetic effects getting in the way of measurement. 
This method also ensures that the vibrations are longitudinal (along the circumference of the core).  See the diagram below:

I would recommend using a piezo disk such as this one, but the problem with it is that you'd need a step-up transformer to connect it to your signal generator, because those piezos like to be powered with a 200V AC signal. 
Maybe a good piezo disk from a Russian battery powered Jack Frost postcard would work right out of the box - Russians like to make their stuff big and sturdy

Dear Verpies.

Like this?? 

https://www.youtube.com/watch?v=qFbO2CEgRUs

Cheers Grum.

It had just dawned on me since this posting!! I am generating electricity by mechanical stimulation!!

[MenofFather]

Grumage, if you interesting Akula, then He post in one forum, that mostly compleet schematic is that http://realstrannik.ru/media/kunena/attachments/3683/img004.jpg (meaning about first video). And here my sugesstion like must be, only were red wire conected on yoke we don't know, but maybe that is not important, maybe it not doing important things. http://realstrannik.ru/media/kunena/attachments/3866/popitkarashivrovatRomanaustanovku.jpg

[Grumage]

Grumage, if you interesting Akula, then He post in one forum, that mostly compleet schematic is that http://realstrannik.ru/media/kunena/attachments/3683/img004.jpg (meaning about first video). And here my sugesstion like must be, only were red wire conected on yoke we don't know, but maybe that is not important, maybe it not doing important things. http://realstrannik.ru/media/kunena/attachments/3866/popitkarashivrovatRomanaustanovku.jpg

Dear MenofFather.

Many thanks for the links. I have saved the schematics for future reference.

IMO the internal choke "drossel" probably acted like an internal Tesla coil. This has now been placed externally on his latest device!! Maybe a rethink and revisit is in order.

Cheers Grum.

[verpies]

Like this??     https://www.youtube.com/watch?v=qFbO2CEgRUs

Yes.
That MHz frequency is interesting but I doubt that it is the fundamental acoustic standing wave frequency. 
First of all, is your piezo disk capable of vibrating at MHz frequencies at all ?

See the table below for the speed of sound in different materials and calculate how much time it takes for the longitudinal vibration (a.k.a. sound) to travel the entire circumference of the ferrite core. 


                      Speed of       Speed of       Loss factor         Loss factor
                    Longitudinal      Shear         Longitudinal          Shear
Material            waves          waves            waves               waves
---------------------------------------------------------------------------------------------
Diamond      12000m/s
Aluminum       6374m/s        3111m/s     0.00003-0.0001     0.0001
Hard Ferrite   6300m/s 
Steel              5960m/s       3235m/s      0.00002-0.0003
Iron               5957m/s        3224m/s     0.0001-0.0004        0.0002-0.0006
Soft Ferrite    5700m/s
Copper          4759m/s        2325m/s     0.002                      0.002
Brass             4372m/s        2100m/s     0.0002-0.001       <0.001
Gold               3240m/s       1200m/s      0.0003
Lead              2160m/s         700m/s      0.05 - 0.3                0.02


For example: if a hard ferrite core has an average circumference of 30cm, then the sound will take ~47μs to travel that distance (because 0.3m / 6300_m/s = 47.6μs) and inverting that time period yields 1 / 47.6μs = 21kHz.

Does a permanent magnet in the vicinity of the core influence this frequency ?  What about the direction/rotation of that magnet at constant distance?


BTW: What is the frequency response of that 40W amplifier of yours?
Also, what is its minimum output impedance and maximum output amplitude (or V_P-P) at that impedance ?

It had just dawned on me since this posting!! I am generating electricity by mechanical stimulation!!

Apparently you are.
If you had a permanent magnet in your magnetic circuit, then you'd generate much more.

If you don't want to play with embedding permanent magnets in the core, perhaps you can apply DC to one of the windings through a choke in series, in order to simulate a permanent magnet embedded in the core (but it is not exactly equivalent).

[Grumage]

Dear Verpies.

It has got too late now for further tests. Your points are noted and understood.

One question. What if I were to place another sensor in the other split? Could I see the offset and therefore have a visual and scope time base reading?

Cheers Grum.