Kapanadze Cousin - DALLY FREE ENERGY

[verpies]

That doesn't happen very often but this time I agree with 90% of what Сергей just wrote.

Is the -40V negative DC bias on the DSR diode Сергей's personal improvement or was it documented by Russian scientists who are the authors of one of those DSR papers circulating around?


P.S.
A thin wire winding made around the wire connecting pin 4 and 8 of U3 might be an excellent idea to get an isolated trigger signal...yes a winding wound on a wire.

Also, for minimization of the MOSFET oscillation, take a look at the Appendix B in this document and the colored current-loop diagram, attached below.
It would be interesting to calculate the drain dv/dt Limit mentioned on page 2-43 in paragraph A5 of Appendix A, too.

[Alfeen]

Привет Itsunadze
I have seen you have a problem wit your mosfet. I sugest you to go back on КТ926А

Привет Сергей and all,

part of itsu's problem may be that the oscilloscope is connected to the high voltage across R3 towards the mosfet drain for the purpose of current measurement. Both potentials will quickly change in the moment when the mosfet is switched on. Then the sharp voltage step occurs also on the GND connection and the body of the oscilloscope. This has no direct galvanic connection and is floating against earth potential, but it has parasitic capacitance against earth potential. The whole thing becomes an antenna and sends out wideband spectrum electromagnetic waves that will surely couple back. I always try to measure from real earth potential = GND. Two probes on the oscilloscope can also be set to work as one differential channel when current measurements are required.

I want to understand how DALLY's coax winding works (or is supposed to work), before I go ahead with the soldering iron myself. I spent last night with OCR of the Russian book "Forming nanosecond pulses at high voltage" from 1970 and started translation. But there are too many OCR caused typos, so Google translator does not recognize many words. Correcting them takes a lot of time for me as I am neither a native Russian or English speaker. Месяц Г.А. explains there how to obtain pulses with less than a nanosecond rise time and hundreds of kilovolts (even one million Volt). I post what I have accomplished until now in coax_pulse.rar and will go ahead little by little next days. It seems to go in the direction of a Marx generator built from coax cables, but I am not yet sure.

Regarding the oscillations I post a schematic and photo of the Tesla coil I recently built. There I had a smooth rise time of about 30ns without any extra filters on the gate. The loop length --which verpies says shall be as short as possible (and he is right!)-- was and still is about 35mm (including the resistor). I hope this helps. Otherwise just disregard it.

I found an explaination of Step Recovery Diodes:

http://www.cst.com/Content/Applications/Article/Direct+transient+co-simulation+of+a+Step+Recovery+Diode+%28SRD%29+Pulse+Generator
http://www.cst.com/CMS/images/article420/Voltage%20and%20Current%20versus%20Time%20waveforms.gif

The generator is fed with a nice sine wave of little less than 5Vpp and a length of 17ns = 59MHz. The diode is always conducting even during the time when the voltage is negative. We see the current (red) a bit shifted to the right because of the two coils and the capacitor. Only shortly before the cycle ends the diode SMMD840 suddenly shuts off and causes a sharp pulse of about 500ps rise time. However, it is only 6Vpp. That's a long way to go until we find such diode able to create 1kVpp. Do you know of any SRD that can do this? Perhaps someone who has the Russian diodes at hand can use above mentioned circuit and check whether or not it shows the SDR-effect.

In an article of year 2001 Vitaliy Prokhorenko describes EXPERIMENTAL RESULTS using 1N5408 impulse rectifier diodes (reverse voltage VR=1000V, forward current IF=3A, reverse recovery time trr=200 ns). He got around 1ns and 40Vpp pulses in the best case reported. So I doubt any SRDs, a 1N5408  or even the magic КД226 will do the trick. I think we need something more powerful, to obtain 1kV pulses @ 1 ns. I hope the answer is in the 1970 book. I'll get back to you after I figured out what is suggested there.

kind regards

[Alfeen]

It did not go through at once, I had to split the RAR archive.

[TinselKoala]

Waveforms from my autotriggering SassyClassE sstc, feeding 22 volts DC switched by an IRFP450N mosfet to the coil's 5-turn primary. Top trace is the mosfet drain signal showing the Class E waveform, mosfet switching fairly well near zero volts, bottom trace is HV field pickup from scope probe hooked to a bit of aluminum foil, suspended in space about 1/2 meter from coil secondary resonator, show at 200 v/div.
This circuit is simpler than yours, no oscillator needed as it is self-triggering and finds its resonant freq automatically if it's working right. Simpler than your circuit but less stable; it's easy to blow the mosfet. I think yours is better, but less simple. Probably doesn't blow mosfets like mine does, either.

[Сергей В.]

Привет всем !!

to verpie both
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to Alfeen As you have builded Tesla Transformer you have chance to start Energetic Revolution 2012 in Germany

As you know Russian it's not be hard to you to understand and build this 7KWatts Fel - Tiger2007 OU Generator based on TT and his standing waves.
..................

to all
..................

This is OU Generator. Author is Nikola Tesla. Than 2012 remade by Fela than sucessfull replicated by Tigar2007

Fel has a memeber of Сyberenergy.ru
http://cyberenergy.ru/generator-kapanadze/probnaya-shema-fel-t433-570.html


Input 40-50 Watts
Power from Accumulator 12V
Output 7KWatt
Give a strong interference on TV and Radio

Technical references on the Russian:
http://realstrannik.ru/forum/46-razdel-avtorskix-tem/95155-rabochie-proverennye-sxemy-se.html#95820

For more information you can ask Fela on http://cyberenergy.ru and Tiger2007 on http://realstrannik.ru/
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И так, первое СЕ..

Устройство сделано по схеме Фела в репликации тигер 2007.
Технические характеристики:
- входная мощность – 40-50 ватт
- работает от аккумулятора 12в
- выходная мощность до 7 квт
- дает сильные помехи на теле и радиоприемники.


Устройство состоит из искровика и ТТ.
Сверху вниз:

- метелка из пучка оголенного провода длинной 30-35 см
- метелка соединяется с ВВ с помощью толстого сварочного провода длинной 6-7 метров; верхние 2 метра находятся в пластиковой трубе и установлены вертикально.
- длина ВВ равна 4-м диаметрам каркаса. Каркас диаметром 20 сантиметров, длинной 80 сантиметров, намотан проводом пэв 1мм.
- индуктор около 15- 20 витков, намотан на оправке 30-35 см толстой шинкой.
- внутри катушки ВВ располагается компенсатор в виде ¼ длины катушки ВВ и намотан в другую сторону, нежели ВВ. Он нужен для подстройки системы в резонанс.

Провод заземления подбирается индивидуально, в оригинале – бухта 25 метров толстого провода.
Искровик состоит из пушпула и твс (можно взять тдкс), конденсатор перед разрядником около 100 пикофарад * 10КВ.
Конденсатор после разрядника подбирается индивидуально, до появления возрастающих колебаний.
Затем передвижением катушки компенсатора внутри ВВ в пределах индуктора добиваются возрастания амплитуды в 2 раза + подбор длинны заземляющего провода.
Для пушпула транзисторы любые из серии кт 838 или подобные , сопротивления от 500 ом до 1 ком . Конденсатор фильтра любой больше 1 мкф, дроссель любой . 

Удачи Алфен !!