Kapanadze Cousin - DALLY FREE ENERGY

[NickZ]

  Joefr:
  Hey Joe, the best thing is just to buy the right induction oscillator driver, with the duty cycle/frequency controls included, as well as the overload protection. If you can afford it.
  Which ones these may be, is still unknown. But, hopefully we'll know soon enough.
  As the driver also has to work from output of the sign wave inverter, the device has to be able to feed back some of the output from the output coil or the feed back coil, back to the inverter, to keep itself going. And that part is still a bit of a mistery, as well.

[magpwr]

Dear magpwr.

Today I finally got round to testing your thoughts regarding the heating effect of the Akula drive coil. With 1 micro farad series cap, not a very good effect. But with 2 micro farad series cap I could heat up a 1" (25mm) dia steel bar to the point of pain!! In just over a minute. Current draw was around 5.5 A at 90 Vdc.

So feeling confident I upped the ante and tried a 5 micro farad series cap. Even higher current drawn at 7.6 A and then disaster!! Another £25.00 pair of IGBT's are heading for Silicon Heaven!!

So it's all stop for now. But I have managed to source some slightly lower rated transistors at £5.50 a pair.

On the upside I now know that the driver is capable of the same effect as was seen on the video, perhaps better? The steel rod was at least twice the density of that spanner!! So I am assuming that I need to set the choke's resonant frequency to that of the drive frequency and just hope there is no more dissapiontment

Nos Da, Grum.

To Grumage,

Thanks for testing out this theory for me using higher voltage and lower current(hv) via caps in this case would still produce heating effect.The objective is  to know if the metal if placed in coil would get hot to conclude if the induction effect plays a key role for kapanadze device.We don't want the high power "red hot" version although it is possible.I think sticking with (2 or 3) 1uf  capacitors to induction coil is definitely a good choice.


There are some experiment i've seen using neon light(trigger around 55v to 90v depend on size) to protect transistor connected to collector & emitter from sudden surge.
Since i have not tested i'm not able to advise if this will degrade the output performance in order to protect $$ transistors.

(Now you made me even more curious since you mentioned you are seeing 90VOLTs x 5.5A =495Watts)I presume you got the voltage output from hv generator and using current reading from the digital variable power supply to kapanadze.
I recalled base on your previous video the input to Kapanadze was around 13volts from external power source with few amps.


I think i've seen that IGBT transistors at ebay.It would be cheaper if the seller is from China or Hong Kong.
Recently i bought 10xMOSFET (SPW47N60C3)  600V rds on 0.07ohm 47Amp from ebay for less than USD $20

[MenofFather]

Dear magpwr.

Today I finally got round to testing your thoughts regarding the heating effect of the Akula drive coil. With 1 micro farad series cap, not a very good effect. But with 2 micro farad series cap I could heat up a 1" (25mm) dia steel bar to the point of pain!! In just over a minute. Current draw was around 5.5 A at 90 Vdc.

So feeling confident I upped the ante and tried a 5 micro farad series cap. Even higher current drawn at 7.6 A and then disaster!! Another £25.00 pair of IGBT's are heading for Silicon Heaven!!

So it's all stop for now. But I have managed to source some slightly lower rated transistors at £5.50 a pair.

On the upside I now know that the driver is capable of the same effect as was seen on the video, perhaps better? The steel rod was at least twice the density of that spanner!! So I am assuming that I need to set the choke's resonant frequency to that of the drive frequency and just hope there is no more dissapiontment

Nos Da, Grum.

I think, you may can gett better efect if you use ZVS driver. Just use wery big diameter cuper pipe and wound of it few turns, this pipe must not make hot. Only capasitors can makes hot. I recomendate use of 3 metters about this pipe and maybe not few turns, but 10-16 turns. Use capasitors 100-200 volts. Mosfets use also 100 or more volts (if you put to it 90 volts) 30-120 amps, highter amps is better. In ideal costruction not cuper pipe, not capasitors, not transistors must not be hot and not be warm. Expeshaly pipe and capasitors parralel to it must not be warm or hot. I then testing and using very big diameter cuper pipe, then only capasitor makes hot. Transistors on big radiators be cold. Then you can use about 0.5 mikrofarad capasitor and it can be not be hot, because yuo use long cuper pipe and then you can use probarly lees microfarad capasitor.

[roll]

hello to all !
I'm new member  and this is my firs post so I want to say hello to all of us !
these days try to build kapanadze but on the internet you can find lots of scheme for coil and electronic. I know its variations on the theme but still dont have good scheme to do it.
Can you please someone of you put the scheme by which you worked, and have success??
or send me link where you alredy discuss this question? cose there is 150 pages and not easy reading all.
Asking because I have same question about scheme and doing it, something cant work (I think)

regards

[Grumage]

To Grumage,

Thanks for testing out this theory for me using higher voltage and lower current(hv) via caps in this case would still produce heating effect.The objective is  to know if the metal if placed in coil would get hot to conclude if the induction effect plays a key role for kapanadze device.We don't want the high power "red hot" version although it is possible.I think sticking with (2 or 3) 1uf  capacitors to induction coil is definitely a good choice.

Dear magpwr and MenofFather.

The loss of my transistors was probably due to not leaving enough time between tests. I re checked the specs and only a small difference in temperature alters the current capability a great deal.

Now you have misled yourself regarding the 90 Vdc. What you were seeing was the supply voltage and current to my gate driver circuit, ie 13 V at 10mA. I have a second supply feeding the IGBT's at 75 Vac that being FWB rectified and filtered to the transistors. So that is where the 450 Watts or so is coming from.

I have ordered some replacement transistors so I can resume testing next week.

Cheers Grum.