Interesting Effect On Copper Rod

[Hoppy]

I'm kinda new to OU stuff, but isn't the setup behaving as a transformer?
Were those toroid transformers that where stacked along the copper rod that was inserted into the big coil assembly?
Anyway, it's very interesting and doesn't look like it would be too expensive to duplicate.

Yes, it is a transformer.

Yes, the ferrite toroids on the copper tube are inserted into the coil assembly in the video.

[rc3po]

Thanks Hoppy, I thought so.

[Vortex1]

Latest documentation from Stefan and friend here:

http://www.overunity.com/14630/kapanodrawback-circuit-from-a-german-friend/new/#new

[magpwr]

Today I setup a basic Zatsarinina transformer experiment with a 12mm outside dia copper tube with 17 off 3E25 ferrite toroids. The inner copper rod was connected each end to various loads. The drive circuit is as shown below. The purpose of the experiment was to test load sharing effect on input current as prompted by this video.

My first test was to run a second wire conductor through the tube for a second load. Both loads were 12V filament lamps. Connecting the second lamp dimmed the first but showed no change of input current, as was observed in the video. My next test will be to insert the ferrite assembly into an air coil with multiple windings and conduct the experiment as shown in the video.

Hi Hoppy,

Thank you for posting this.Recently after reading the Don smith China replication as found in page 260 pjkbook.pdf ,One of Don smith video and this schematic.

I have now 100% concluded this is running on RF power.The nice circuit you posted is a rf transmitter as well.The advantage is low amps is required.My recent video of electronic stimulation as posted in Don smith topic revealed that it merely consumed around 20mA on 1600v(1600v emulate the capacitor bank).

I have attached the Don smith device China which is running on <10KV and using RF power for the 5 turn induction coil with the LC should match their frequency 220khz...230khz.
(OMG BU508D is a 1500volts transistor)
Example my 5 turns 3meter oxygen free 8AWG cable is at 2.65uH capacitor to use 0.19uf 10KV to get around 224khz.(Outer diameter with 8AWG wire is just below 3inch)
Online L/C calculator-http://www.deephaven.co.uk/lc.html

My first objective is to assemble using suitable toroids,copper sheet,copper wire as rod(I do have spare 999 silver rods in one of my fav health product for use with distilled water ).
Then i need to start making large printed circuit board on my own in the meantime while waiting for parts arrival.

[NoDrawBack]

Hi Vortex!

Just to clarify:
you wrote:
>The beginning shows a 15 Watt lamp being lit normally from the KAP type
>transformer secondary at about 15 Watts with 14.55 Watts input (29.1V 0.5A).
The 15 Watt lamp had an output of apprx. 3-5 Watt in that moment (camera does not give real view) and was connected to L3 in that moment!

>The second half ...  an extra light is lit brightly without any increase in current drawn from the supply.
But what not could be seen in the video is that the 15 Watt lamp dims in that moment
(output power is beeing divided in that moment)

>The circuit is about COP of 1.0 with just the one lamp, but then two lamps (added 7 Watt lamp) are brightly lit with no increase in power input?
From the visible light emmission i estimated an output of about 3-4 Watt from the 15 Watt lamp plus apprx. 6-7 Watt from the 7 Watt lamp.
So stating an efficiency of about 80% should be realistic.

Just forget the 15 Watt lamp connected to L3 and focus on the 7 Watt lamp on L1

BUT: How efficient is a regular light bulb at 20 kHz? I do not know!
I tried diodes, but mine are not fast enough, which decreases output a lot - i even have very slow ones which completely cancel the output.
I ordered ultrafast diodes for a full bridge - will post results then.
Problematic is the high voltage peak on the output: Even with an attached 7 watt load a get up to 1.5 KV on L1 (output)
Diodes with high voltage and high speed are not easy to get (and to manufacture of course)

So the next step is to lower the windings on L1 like Dally (Kapanadze Cousin) does by winding 5 turns copper foil as L1 - we will see if  the effect then still remains.

One more thing: It is important to NOT capture the high voltage back emf back to source or into a cap or another coil. This "FREE" sharp HV spike is essential for the effect of "NoDrawBack" - so watch out for your FET to be able to handle this high voltage spike. I added a diode in front of the FET which saved FET lives thousand times (killed dozens of this $10 pieces). I am not sure why the additional diode protects the FET from death - i guess the Trr of 40ns is responsible - for me this just works.....

Happy experimenting
NoDrawBack

BTW: I am updating additional infos here to have important things together at one place:
http://prezi.com/anxy2qlmgx7l/nodrawback/