hi itsu,

Thanks for pointing me to the circuit.I will assemble one now for testing.By the way are you able to point me where to buy KD22D diode online.There is none in ebay.
I got few of the Silicon Carbide Schottky Diode 600volts rated with "zero" recovery got it for $2 ea in ebay.But no news detected in using as DSRD in nanopulser.
http://pdf.datasheetcatalog.com/datasheet/infineon/1-SDT12S60.pdf

There is a interesting discovery i made and solved while i had 74HC132 nanosecond generator on the breadboard with my DIY 74HC132 PWM generator (Fastest dual output channel PWM generator tested to 3Mhz.Circuit was uploaded weeks back no changes since and already implemented into PCB design).

If for example TC4421/TC4451 or TC4420/TC4452 is connected to nanosecond generator even though there was no output connected to anything.I noticed there was small glitch appearing at the channel A and channel B of my PWM generator.Initially i used 6 ferrite beads on straight wire at the positive supply of the TCxxxx driver which solved this problem for good.

Subsequently i found that by placing FERRITE beads on straight connector wire there is 1.4uH created.Later on i just replaced with a <10uH inductor to nanosecond driver positive pins.

I'm aware the mosfet driver need very good coupling since it's required to produce burst which needs high Amps during the switching period.

Magpwr, 

i got mine from here:

http://www.evita.lt/en/kd226d-diodas-kd226d-si-d-800v-1_7a?search=kd226d

Regards Itsu

A kacher is not the same as a tesla radiant, even tesla emphasized his transformer is not the same as a HV, HF transformer. Even in his time scientists confuses teslas radiant transformer with a HV, HF transformer, whitch actualy kacher is.

I do not know, but as long I see there antenna I do believe it is working on Radiant principle Yes, kacher is self oscillating on natural frequency, but try to change the inductance (lenght) of your primary and you finish with different output frequency is because both - Primary and the Secondary determine the natural self oscillation condition.
We speak about Tesla here maybe because Ruslan himself call this coil tesla. Also brovin is one of Tesla coil drivers  

What is the actual difference between Tesla coil and HV,HF transformer?

Thanks,

I got few of the Silicon Carbide Schottky Diode 600volts rated with "zero" recovery got it for $2 ea in ebay.  But no news detected in using as DSRD in nanopulser.
http://pdf.datasheetcatalog.com/datasheet/infineon/1-SDT12S60.pdf

Schottky diodes do not work as DSR Diodes.
Silicon Carbide (SiC) diodes can work as a DSR diodes theoretically but practically they do not because their junctions are made too sharp in the modern manufacturing process (good DSR Diodes have diffused junctions).
In summary, modern SiC Schottky diodes are the worst choice for DSR Diodes !!!

See this post:
http://overunity.com/12736/kapanadze-cousin-dally-free-energy/msg340777/#msg340777

A good DSR Diode would be a very shitty rectifier. 
In other words, it would conduct a huge current in reverse for a short time. 
( Note: this short time is not the "reverse recovery time" - it is the "forward recovery time", that is usually not listed in diode datasheets ).

If you ever measure a diode conducting 1000A for 50ns in reverse then you can be sure that it will make an excellent DSRD.

Itsu's DSR Diode is one of those old Russian diodes with diffuse junctions, but it is not the best DSR Diode.
It works but it does not cease conducting in reverse quickly enough and consequently he obtains only 10s of ns wide pulses.

You tell me, you are tesla expert. 

I am not an expert, I am only humble beginner lost in misinformation of this world. So I am asking again, what is the difference between the Tesla coil and the HV HF transformer? Thank you for making me this clear on my way to understanding    

Re Making kacher more stable...


I've been swapping various primaries and secondaries all with pretty arbitrary relationship.
all air cores...
if the secondary is higher inductance, can increase turns on the primary and the closeness of the primary to the secondary so it has better leverage against it... and gets better coupled feedback.  Increasing turns is not nessecarily enough; changing the turns by double doesn't affect the balance of the overall system... that change alone shouldn't be enough to change the octave...








--------
The higher the voltage transform, the lower the resonant frequency can be; the lower the frequency the higher the capacitance linking the kacher secondary and grenade can (should) be.


down to 135Khz with decent output at lower voltage... more current used at a time though so same basic power...


When I first stepped down to this, the kacher was doing pulses... so it would ring up  resonance (as detected by a scope probe laying a distance away on the table ) get to a max, steady out at a level, then cut off... and have a long period of silence.  and then again a ring-up (resonant rise)....


adjusting resistance didn't fix it... was using same (about 8 turn) primary as with other secondaries I had tried... (I've been increasing inductance of the secondary)... tried a large loop 24 turn primary that didn't work very well... now found a tight wound cadeuceus that's about 32 turns that works pretty good; but the signal on the scope probe isn't as strong... so I'm losing a level of transform.  This last secondary was like 32 gauge wire so it is the thinnest yet... so possible it's got current limiting problems too.


----
re capacitance across diode; if you have the diodes to spare, the AV plug across is less lossy... because it is a small transfer capacitance there, it can interfere with the resonance self-capacitance.. but if they are significantly larger ... should affect the resonance less... (?)
If the diode is heating up; it may be that some capacitance across it might ease the high voltage against the blocking side...

  Lots of comments... good.
  I finally got my Kacher's secondary coil sending the pulses to the antenna coil.
I was up to 1.30 am last night, playing with it all. As it's very sensitive to any interferences from the table, wires, the grenade coils, those inverted polarity turns,  etz... Just one wrongly connected inverted turn, and it wont work.
Really important too follow as closely as possible what Ruslan has done on the Akula second video clips.
 
  Still no increase in my bulb brightness though, not even one iota.
  I think that until in put on the proper fets in place of the smaller ones, I won't get to the next higher resonant peek, that may trigger the superposition to generate extra energy. 
  I think that we have to start from scratch to really understand all the complexities involved. And tuning may still take forever, to get it right.

 Ruslan Kulabuhov cameo in this music video by Алан Шум и Алина Фэлдман - Бей по пузу (big papuza) ..  funny …
 
 
https://www.youtube.com/watch?v=lPdWkgGgwR0
 
Acca ..
 
 P.S… Ruslan is on Christmass vacation…[/font]

Hi all,

There was conversation with one of my friends and he told one thing - the katcher he used in Kazachstan required only few watts to make streamer on top of Tesla coil with smell of ozone all over place quickly and the same katcher requires 60W+ to make same in Germany and almost no ozone smell for quite long time.
Just wonder if that is the case with Earth telluric currents and Becker-Hagens Grid - http://www.crystalinks.com/grids.html

It might be looking like wild idea but I would like to hear some feedback from different places of Earth about minimal power requirements of your Tesla coil to make streamers and smell of ozone in entire room... That might shed some light about replication of Kapanadze/akula/Ruslan device.

Cheers!