Tried to put in an intemediate toroid... so mazilli to toroid to drive coils on kapagen coil... and had no luck...


current went way up; even matching near the same frequency the behavior is not at all the same   tried both a step-up and step-down to existing windings.


; increasing windings ... can get output but at a higher voltage and lower current input..
maybe resistance is an issue

   d3x0r: 
   Find yourself a 3 inch crt Tv or monitor yoke to work with for this project.
 The smaller 2.5 inch yokes will not work, as well, or at all.
  Connect the 3 inch yoke to your Mazilli crt, using 6 turns, and 6 turns for the yoke's primary, and 25 to 28 turns for the yoke's secondary coil, using the 2.5 mm wire. This is for a 12v input source. Higher inputs will require 18v zeners.
  Connect the Mazilli/yoke to your grenade/Kacher set up. Then tune it, using the caps like the 0.33uf to 0.47uf, or so.  Report your findings...
  I'm sure you'll get more interest, comments, and attention from the rest of the guys here.
 

I have a couple; also a few high perm toroid cores that apply; I have 4x4 inch 1x1" square cores also...
as an inverter, I found more power out from just the toroid than from the grenade inducted from the toroid.


Remove the middle man; and things are very nice on a ferrite cored kapagen.
Since every other replication with an RMG (dally, etc) turns out it's a nice inverter core....


I did tune it using 0.500uF and 0.250uF caps etc... but with no notable output or use.
I rarely report null results... so that's a whole lot of nothing you can comment on.


Instead I've already done all of that; and moved on....
I had a point where I could add a 6W led bulb... but lost that; gonna have to start again.
I have 3 cores with various driving windings; again skipping the extra induction step inbetween.


I'd recommend adding a few turns naked around the kapagen...or split the 12x12 bifilar and use that directly on the royer... the back resonance of the grenade as  a secondary will auto tune... balancing capactiance on front and back can improve results.


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I mean sure; since every replication has indicated success using exact parameters, of course I'm wasting my time.  Wish more could follow along without having to do the work themselves...
And;
the three ferrite based kapagen cores share 1 thing in common; the ratio of windings and directions; counts, wire kind, etc are all variable.
Some work better than others;
their bounce back is a different frequency than each other... managed to light an incandescent across the capacitance... for 1.5A though...
was getting a flourescent with stock circuitry to light in parallel with the load for 0.5A at 12V... (0.85A to 1.35A input increase) ..


Even managed to get my power supply to stay on... but the 12V rail was only 6.6V and 5V was 3.2 or something...  (12V 1.1A input with other loads)


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the windings that show dips, they were wound on the back half of the kapagen... between the middle of the long exposed part and the back turned coil... right near the end...  which was a similar frequency/response as the other exact end... but it was near the counter wound coils... so probably was picking up the back inductance from the shorter parts...


sometimes wish I had surveilance on my bench... not sure which one I was having the best luck with.

Any opinion if I do right?

I have add more wire to my kacher to tune it to around 600KHz ( the best scope result for grounded granade)
Unfortunately with more wire the consumption went up. It takes now around 5A at 18V  (before it was taking only 2A@24V @1.8MHz)
I think if I will properly tune Primary to secondary coil it might drop the consumption (I hope)  I need to find right cap for the primary coil. The problem is  I am not able to check the inductance of the secondary as it is over 20H (max on my LCR meter), so I guess instead of calculation I wil use my SG and oscilloscope to find the natural resonant frequency of my secondary coil and tune my primary to it? Does Brovin makes it more complicated than that?

Thanks

I would almost dare to say 48/24/12 is magic.
64/32/16 doesn't really work as well
when I did the singlefilar magnet wire version; I stuck to 48 proportion also... and with the current system it is the best...


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used 12/12 turns bifilar to drive fullscale air core... it doesn't have good resonance itself... and it's only a tiny capacitance to make it resonate...


it has a very sharp peak that has some resonance... but would have to be a higher frequency signal.... and the output is very slight

"over 20H "  are you sure?   I have severall Kacher coils, one with about 900 turns,  but it only measures 9mH.

Not sure how you want to tune the primary to this secondary, if you use the simple Kacher setup as can be seen in the Ruslan diagrams.

Guess you can find the correct tap for cleanest (collector) signal and lowest power consumption, and/or slide the primary along the secondary
to find a sweet spot there.

Regards Itsu

Hi Itsu, you are right, It is weird. I have around 1000 turns of 0.3 wire.  When I check it- I connected one end to the start of my secondary and the second end of my LCR meter to the very end of antenna . Now When I am thinking about it I should check each piece of my secondary separate and sum them ?(Long coil + what's on ferite rod+antena)  In any case my cheap meter shows from mH up to 20H  and it was showing  that the value is more than  20H.

Thanks,
Jan

 
   d3x0r:
  I don't agree that the Kapagen device coil is similar or the same as the grenade coil. You may call the grenade, a kapagen coil, but it only adds to more confusion.
  Also, a Kacher circuit is quite different than the Exciter circuit, although both produce HV. Exciters run at much lower draw from their input source, mAs, not amps.

  I have tried to suggest things that can help you to produce an good output without wasting too much time. And that can be further developed towards a self runner. But, you seam to think that no one has a clue as to what their doing.

  My first Royer crt, worked fine, lighting up 5 100 watt bulbs, fairly bright.
  My RMG replication also worked well, lighting up to 7 100w bulbs.
  My version of the Ruslan/Akula second video device, is also working, even without the proper high amp fets, but I'm still working on my Kacher, to properly to tune for the heterodyning of the multiple frequencies.
 
  Here's a couple of older pics, just using my old 4.5aH battery.  A single 25watt bulb connected to the Royer crt, alone, ran for almost an hour on the old worn battery.
  The real trick is having a working feed back path. And using the right power supply for the loop, might not be the only way to go, but probably worth trying it out first.
 

 
   d3x0r:
  I don't agree that the Kapagen device coil is similar or the same as the grenade coil. You may call the grenade, a kapagen coil, but it only adds to more confusion.
  Also, a Kacher circuit is quite different than the Exciter circuit, although both produce HV. Exciters run at much lower draw from their input source, mAs, not amps.

Well... since winding directions were noted on the coil from the kapanadze aquarium most clearly... don't see how it's anything except the exactly the same.

  I have tried to suggest things that can help you to produce an good output without wasting too much time. And that can be further developed towards a self runner. But, you seam to think that no one has a clue as to what their doing.

Ahh; is that what your intent was?  If it could be, wouldn't it already have been?  What about that system is anything other than an ordinary inverter that could be self looped?    Telling me the only way I can get a response is to follow exactly what you're doing, and me saying I tried that and it didn't work for me, is me saying noone has a clue?  Mostly I'm sharing my own experiences. 

  My first Royer crt, worked fine, lighting up 5 100 watt bulbs, fairly bright.
  My RMG replication also worked well, lighting up to 7 100w bulbs.
  My version of the Ruslan/Akula second video device, is also working, even without the proper high amp fets, but I'm still working on my Kacher, to properly to tune for the heterodyning of the multiple frequencies.
 
  Here's a couple of older pics, just using my old 4.5aH battery.  A single 25watt bulb connected to the Royer crt, alone, ran for almost an hour on the old worn battery.
  The real trick is having a working feed back path. And using the right power supply for the loop, might not be the only way to go, but probably worth trying it out first.

laws of diminishing returns... if you had a point that represented more power than the input it would be easier to make a feedback path...
the toroid coils worked best in low power.... was thinking of thowing that back together... maybe incoroprate some of this other output path stuff...


The royer/mazilli is really a horribly lossy thing; a 555 timer uses less current than a royer with no power connected to the choke uses... since the base resistors are always a loss; and when the coil drags the related gate low the power to ground conduction there is big.


*shrug* I think lots of people know lots of things; (what was that russian word... sampozitka? ) is not one of them  


if I have 2 mosfets, 1 nchannel and 1 pchannel, with drain and source to two different coils, and their base tied together, can I drive them 50% duty cycle with a 0-5V signal to both?  like I don't have to be V from the positive side?  Still not clear (what makes it work?... how it works?  how in practice it is employed.... ) on pnp, pchannel  parts...(?)