Kapanadze Cousin - DALLY FREE ENERGY

[Void]

Hi Void,
Thanks for your preliminary report.
I've just finished testing my first Kacher secondary wind. I have 26m wound on 50mm pipe for a length of 170mm. Natural resonance using a six turn primary is coming out at 1.6Mhz, injected from SG. My wire is 0.9mm diameter and adjacent turns are not tightly closed-up. I have tried to space the windings slightly.

Hi Hoppy. Ok, interesting on the natural resonant frequency being at 1.6 MHz.
I imagine it will run at a fair bit higher frequency with the kacher driver in place
for a 26m wire length.
Added:  JavaTC puts your resonant frequency at about 3.9 MHz.

Just for the halibut, I hooked up a breadboarded 2SC5200 kacher driver to my 40m wire
length tesla coil, with about 4 turns primary close wound on the bottom of the secondary. 
With the power supply set to 12VDC, I am getting a sinewave at 2.5MHz. That is with
40m wire length, so the javaTC program seems to have been pretty close at estimating 2.83MHz
resonance for 37.5m wire length. If I shorten my wire length down to 37.5m and space the windings a bit,
I should get close to 3 MHz I would guess. I was getting a few mm's arcing to a screwdriver tip held
up to the wire end at the top of the secondary winding. This makes the bench power supply go spastic,
so it is risky with a bench power supply.    I have a 5KP10CALFCT-ND TVS diode (clamps at 17V max) from
the base to ground for overvoltage protection. I also had the chassis ground on the kacher circuit grounded to earth ground.

The kacher driver circuit was only drawing about 160mA at 12VDC with this arrangement.

Here's a scope shot.
Yellow trace is a probe placed a few inches away from the secondary winding.
Blue trace is the transistor base signal. Base signal looks pretty funky.
All the best...

[Void]

P.S. I hooked up a large sheet of aluminium foil to the end of the kacher
secondary with an alligator clip lead to simulate connecting a big antenna coil on the end, and the
frequency dropped to 1.4 MHz. That's a 44% drop in frequency. Using that as a rough guideline,
it would appear that we should need a non top loaded frequency of roughly 3.6 MHz at least to still
hold to about 2 MHz once the large antenna coil is connected.
All the best...

[magpwr]

hi guys,

I have just completed designing my Tesla coil to Yoke driver stage with duty cycle control which will be perfectly in sync with the Tesla coil at 1/60 the frequency of Tesla coil.

Long story short -By placing 1 short wire <10cm which serve as Antenna couple of cm away from tesla coil with 2 protection diode 1N4148 across 74HC4017 supply rail from the Clk input.
Assume my Tesla coil is running at 1.60 Mhz it is automatically divided by 60 .Result would be =1600000/60 = 26666.666Hz or 26.666Khz.
This output frequency(Channel A in virtual scope ) is phase into 2 half positive and negative half and i have also implemented duty cycle control which is currently set to around 40% duty at the moment(cater for the dead time easily).

Using the above automatic frequency technique .To quickly down tune the tesla coil say from high frequency 2.xxMhz to whatever lower frequency.I merely would have to slowly insert ferrite into tesla coil and the yoke driver output would be in sync with tesla coil higher or lower frequency.

The only thing i have not confirmed if i need to create phase shifting stage like it was done for the nanosecond generator circuit version 7.0 which i have previously upload so that nano pulse appear middle.
This is to ensure that negative peak eg:1.6Mhz from tesla coil would be aligned with positive peak of sinewave eg:26.666khz at 1/60th frequency of tesla coil."Remember 60th Sub-Harmonics"

I will upload a youtube video later in the day provided if there sufficient time to demonstrate this simple but highly effective Automatic frequency control circuit with tesla coil placed near by.

I have this attached this untested version since phase shifting is not tested yet or if need to implement for the first stage.
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The only thing at this moment which there is no shortcut is the capacitor value selection eg:0.47uf or 0.47uf x 2 from yoke to 25 turns.I do not have a yoke or large nano crystalline toroid yet.
Please note in one the Ruslan video there is smaller value capacitor which was connected in parallel with 0.47uf capacitor.This is obviously used for fine tuning purpose.

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Alot of "Mental" planning is needed before implementation.Primary objective to save time "Physically" in the end.


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Latest update-Look what i have just got from the postman on a local holiday today.
Large Nano-crystalline toroid from www.cwsbytemark.com as backup to the 2 different USSR Yoke core which is on the way.

[MenofFather]

The diodes and choke in the green box makes the now dc voltage across the bulb go negative compared to ground,  right?

Right.

[itsu]

Right.

Thanks, so we have to be carefull when using electrolytic capacitors there.
Guess it does not matter when using a PSU, it will work either way.

Regards Itsu