Kapanadze Cousin - DALLY FREE ENERGY

[Hoppy]

  Nothing special?  But, it works, and Ruslan is not an experienced electronics hobbyist. Or is he?  AND, in such a short time? Think about it...
  Just my observation.

But does it really work?? That's what we are trying to establish. 

[Hoppy]

   "No need to import nowadays, plenty of Chinese businesses over here! Hopefully, it will stay smoke free for a while".
                                             end quote.

    I wish that I could say the same, as I can't even get the new fets I need to continue on, here in C.R.  But, they are ordered and will be here, any month now, coming by turtle shipping, from China.

  Reminds me of the first page of this thread, where two computer PSU were fried, before finding one that finally worked. If I remember correctly, as it's been a while now.
  I wonder if the PC type of PSU might work for us, as well. But, I wouldn't want  to see them go up in smoke though.

Nick,

Its strange that you have to wait so long for imported components. I've ordered components direct from China on ebay and received them within one week, sometimes received quicker than components posted to me in the UK!

[skywalker66]

Today I have been trying to produce the flashing lights effect that we see in URFA's videos. I started by taking the Kacher 24V supply from what he calls the synchronisation point 'B' (shown on a previously posted schematic from URFA) via a series connected 148uH choke.  This did not appear to show any effect, so I removed the 470uF electrolytic cap that I had on the output of the PWM / push-pull supply filter, leaving 470nF cap across the output. This started to show a little response as I moved my hand across the antenna and saw the lights varying a little in brightness. It was not until I started altering the frequency of the Kacher with a ferrite rod insert that I saw the maximum effect and this was with the kacher operating at around 950KHz, where the effect peaked. The effect was not as great as seen on URFA's video but the Kacher was having a pronounced effect on the brightness of the bulbs. My grenade coil frequency 1/4 wave is as previously reported - 1.316MHz and PWM is running at 21.9KHz. I don't think that I have so far optimised the value of the series choke for max effect. I suspect that URFA used one of his green high perm toroids for his choke. I have noticed that the amplitude of the Kacher waveform increases a little when the device is connected to my domestic earth. My power supply is isolated from earth.

Hi Hoppy and all !
I'm glad to see you making progress.
It seems URFA was right about synchronization after all.
As I remarked so far there was 3 ways to make that synchronization between kacher and push-pull
1. Akula way - he use complex electronics to sync kacher to push-pull
2. Ruslan way - he seems not use explicit sync but by choosing right frequencies they manage to lock (push-pull as a precise subharmonic of kacher)
3. URFA way - he sync by ripple of common 24V supply. He use weak decoupling of kacher and push-pull suplies.

1 & 3 may as well use subharmonic of kacher for push-pull.
21.9KHz is not  quite a subharmonic of 950KHz

Hoppy, I suspect you will find better effect at twice of 950MHz (1.9MHz), but it's just a thought.
For more easy way to search for proper kacher frequency, it is better during tests to remove that coil antenna and use a curved aluminum plate as kacher antenna and bring closer or remove slowly near the grenade, altering in this way kacher frequency.

Also you may see how I thought an efficient and easy way to synchronize kacher to push pull in attached schematic. If you consider worthy, you may go a try.

All the best !

[Hoppy]

Hi Hoppy and all !
I'm glad to see you making progress.
It seems URFA was right about synchronization after all.
As I remarked so far there was 3 ways to make that synchronization between kacher and push-pull
1. Akula way - he use complex electronics to sync kacher to push-pull
2. Ruslan way - he seems not use explicit sync but by choosing right frequencies they manage to lock (push-pull as a precise subharmonic of kacher)
3. URFA way - he sync by ripple of common 24V supply. He use weak decoupling of kacher and push-pull suplies.

1 & 3 may as well use subharmonic of kacher for push-pull.
21.9KHz is not  quite a subharmonic of 950KHz

Hoppy, I suspect you will find better effect at twice of 950MHz (1.9MHz), but it's just a thought.
For more easy way to search for proper kacher frequency, it is better during tests to remove that coil antenna and use a curved aluminum plate as kacher antenna and bring closer or remove slowly near the grenade, altering in this way kacher frequency.

Also you may see how I thought an efficient and easy way to synchronize kacher to push pull in attached schematic. If you consider worthy, you may go a try.

All the best !

Thanks for your comments Skywalker. Your circuit looks very feasible and I will certainly try it at some stage.

I'm still wondering how URFA gets such a lively spark from his Kacher. I hope that he can comment on this.

[skywalker66]

Hi Hoppy!

You say "My grenade coil frequency 1/4 wave is as previously reported - 1.316MHz"
Can ask you, this freq you reported is find out prior winding inductor over grenade or after ? and what method do you use for find out it?

Related to URFA setup, observe in attached picture of his kacher, he use a 2200uF/63V electrolytic cap + 2 more non-polarized caps (yellow caps) for strong decoupling effect of kacher.