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Author Topic: Kapanadze Cousin - DALLY FREE ENERGY  (Read 6235891 times)

Offline NickZ

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Re: Kapanadze Cousin - DALLY FREE ENERGY
« Reply #17205 on: May 18, 2017, 08:02:55 AM »
  Bat1Robin2:
  As I had mentioned previously it does not matter what frequency, or duty cycle is used, the fets will overheat in a few seconds running.
  The duty cycle is not too high, either, as can be seen in the scope shot. The bulbs will barely light with a lower duty cycle. And running at any higher frequency will not light the bulbs any better, but worse, instead, which are already pretty dim.
  I do need to use a higher frequency, but, the frequency pot will not go much higher, and as I can still hear the ringing, I suspect that something is not right, as well, of course.
 I can only hear up to about 11.500khz, no higher as I'm 65 years old. My previous Mazilli yoke circuit did not make any noise at all, nor do  Ruslans or Akula's device.
  That is also as good a scope shot as I can take, if I get the camera any closer to the scope, it stops working and will freeze. In any case, I'll see what I can do about that. My PSU is 24v, 10A, and has current limiting protection circuitry.
   Thanks for your comments.

   Hoppy, I think that the reason that running on a single fet improves the output at the bulbs is because it then will run at a lower frequency on just one fet, instead of running on both. It will also heat up the single fet even more. So, there's no advantage there.

Free Energy | searching for free energy and discussing free energy

Re: Kapanadze Cousin - DALLY FREE ENERGY
« Reply #17205 on: May 18, 2017, 08:02:55 AM »

Offline Hoppy

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Re: Kapanadze Cousin - DALLY FREE ENERGY
« Reply #17206 on: May 18, 2017, 09:30:03 AM »
 
  I do need to use a higher frequency, but, the frequency pot will not go much higher, and as I can still hear the ringing, I suspect that something is not right, as well, of course.


Nick,

You can increase the frequency by reducing the value of the cap on pin 5 designated 'CT'.

You will need to experiment with snubbers to achieve less heating of the fets, or use the yoke 'lossless clamp' configuration suggested by Verpies. Have you got adequate heat sinking? if you are still using the heat sinks shown in your attached photo in post 17010, then these in my opinion are far too small. Use new heat transfer pads or good quality thermal paste.

Don't expect clean waveforms with the yoke connected, even if you have adequate snubbing.

Offline AlienGrey

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Re: Kapanadze Cousin - DALLY FREE ENERGY
« Reply #17207 on: May 18, 2017, 12:05:20 PM »
Nick,

You can increase the frequency by reducing the value of the cap on pin 5 designated 'CT'.

You will need to experiment with snubbers to achieve less heating of the fets, or use the yoke 'lossless clamp' configuration suggested by Verpies. Have you got adequate heat sinking? if you are still using the heat sinks shown in your attached photo in post 17010, then these in my opinion are far too small. Use new heat transfer pads or good quality thermal paste.

Don't expect clean waveforms with the yoke connected, even if you have adequate snubbing.
Not trying to be clever but please disconnect the power first ;)
The other thing is Anyone know where I can get a decent pair of deflection coil 'formers' from ?

Offline Ed morbus

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Re: Kapanadze Cousin - DALLY FREE ENERGY
« Reply #17208 on: May 18, 2017, 01:06:12 PM »
Go to eBay

deflection Yoke

Offline Bat1Robin2

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Re: Kapanadze Cousin - DALLY FREE ENERGY
« Reply #17209 on: May 18, 2017, 03:59:22 PM »
Nick,
Your either pulsing too long or you have the output shorted.
Im giving you frequency and pulse width info that runs the most efficient if that blows fets then you must have a short on the output.

What is your load on the secondary 28 turns of the yoke, i use a single 60 watt bulb for testing.
What is your snubber circuitry, i use only a surge protector over the source to drain for testing.

What is your FET supply voltage and amp draw i use 24 volt DC . single bulb load is about an amp on consumption. 50 volt or so is about the maximum output a the bulb during testing.

This is a simple transformer thats not properly weight matched. (meaning the weight of primary should be the weight of secondary)
That is probably why its in the 70% efficient zone.
 step up transformer with 12 windings center tap then 12 more windings.  28 winding secondary.  extra 4 windings not really matched properly so leave it disconnected for start, it will only increase output slightly if connected in the correct polarity.

dc to dc power supply with torroid core and with an extra grenade coil in series with the output to somehow collect radiant from the tesla circuit.
just my opinion,
Good luck to getting it running.


Free Energy | searching for free energy and discussing free energy

Re: Kapanadze Cousin - DALLY FREE ENERGY
« Reply #17209 on: May 18, 2017, 03:59:22 PM »
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Offline NickZ

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Re: Kapanadze Cousin - DALLY FREE ENERGY
« Reply #17210 on: May 18, 2017, 04:14:01 PM »
  Hoppy:
  The heating issue is not due to the smaller heat sinks. I've tried bigger ones such as the motherboard ones, and they worked worse and is why I changed to using the smaller ones that can dissipate the heat sooner. Less than one half minute running is enough to blow my last fets, in last nights testing. Bigger heat sinks will not dissipate the heat in time before the fets blow, as they have more mass but take longer to dissipate the heat from the start. In any case the excess heating is not solved by heat-sink size, fans, or heat sink compounds, as there is way to much heat being produced for any heat sinks to keep up with.
   Itsu used Verpies lossless clamp design, but, he had produced a very poor output at the bulbs, similar to what I'm seeing now.
   Apecore is also now using Verpies lossless clamp system, and 50v input to his Kacher, but I don't really see any better results at his output, as yet. Considering that I can light the single 100w bulb with just my Kacher by itself running on 24v.

   What value capacitor should I try at the TL's pin 5? I'm currently using the recommended 102.
   
   I believe the problem may be in the yoke coils, or connections methods, as the TL494 is producing nice clean signals on its own, with the yoke connected, until I connect the Kacher. But, the heating issue is not due to the Kacher, as the fets will heat up even without the Kacher being on.

Offline NickZ

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Re: Kapanadze Cousin - DALLY FREE ENERGY
« Reply #17211 on: May 18, 2017, 04:32:24 PM »
 Bat1Robin2:
  I'll answer your questions later today, as I've got to go somewhere now. 
   My load is a single 100w bulb which works much better than the smaller value bulbs.
   The same yoke/grenade set up could light 4 100w bulbs using the Mazilli driver, and same Kacher circuit, same input source. Also showing a great sync from the Kacher to the grenade. Unlike this type of TL494 circuit.

Free Energy | searching for free energy and discussing free energy

Re: Kapanadze Cousin - DALLY FREE ENERGY
« Reply #17211 on: May 18, 2017, 04:32:24 PM »
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Offline Hoppy

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Re: Kapanadze Cousin - DALLY FREE ENERGY
« Reply #17212 on: May 18, 2017, 05:06:14 PM »
  Hoppy:
  The heating issue is not due to the smaller heat sinks. I've tried bigger ones such as the motherboard ones, and they worked worse and is why I changed to using the smaller ones that can dissipate the heat sooner. Less than one half minute running is enough to blow my last fets, in last nights testing. Bigger heat sinks will not dissipate the heat in time before the fets blow, as they have more mass but take longer to dissipate the heat from the start. In any case the excess heating is not solved by heat-sink size, fans, or heat sink compounds, as there is way to much heat being produced for any heat sinks to keep up with.
   
What value capacitor should I try at the TL's pin 5? I'm currently using the recommended 102.
   

You are clearly pulling too much current. You could try heavier choking of the 24V supply to the yoke. I had this problem but managed to limit the pulse current with a suitable value high current choke. Have you got good duty cycle adjustment on the scope with the yoke connected and Kacher off? Don't run without a decent load on the yoke secondary.

102 (1nF) sounds about right to me for the right frequency range with a 100K pot, or 103 (10nF) with a 10K pot.


Offline apecore

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Re: Kapanadze Cousin - DALLY FREE ENERGY
« Reply #17213 on: May 18, 2017, 05:08:16 PM »
Bat1Robin2:
  I'll answer your questions later today, as I've got to go somewhere now. 
   My load is a single 100w bulb which works much better than the smaller value bulbs.
   The same yoke/grenade set up could light 4 100w bulbs using the Mazilli driver, and same Kacher circuit, same input source. Also showing a great sync from the Kacher to the grenade. Unlike this type of TL494 circuit.

Nick,
I don' t know if you can do or did it alteady but try to compare your mazilli Fet driver (gates) signals with the TL's.

Succes

Offline AlienGrey

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Re: Kapanadze Cousin - DALLY FREE ENERGY
« Reply #17214 on: May 18, 2017, 05:51:38 PM »
Nick,
I don't know if you can do or did it already but try to compare your mazilli Fet driver (gates) signals with the TL's.

Succes
Nick Appcore, Hoppy and all, Suggest you find out what the resonant frequency of your yoke is you will get far more out if tuned to the sharp gain spike you might need a scope and a capacitor or two. But feel free to ignore my ramblings !

AG

Free Energy | searching for free energy and discussing free energy

Re: Kapanadze Cousin - DALLY FREE ENERGY
« Reply #17214 on: May 18, 2017, 05:51:38 PM »
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Offline NickZ

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Re: Kapanadze Cousin - DALLY FREE ENERGY
« Reply #17215 on: May 19, 2017, 12:53:19 AM »
Nick,
I don' t know if you can do or did it alteady but try to compare your mazilli Fet driver (gates) signals with the TL's.

Succes

  apecor:  The Mazilli driver has been recycled and is not intact, so no, I can't compare the Mazilli with the TL board.
   What size, type, and number of windings are your yoke choke(s)?  As I can't understand how your fets are staying only warm.
How hot do your fets get when using 3 or 4 100w bulbs, while the bulbs are running at use able brightness?

   Hoppy: I am already running two chokes, a one inch yellow iron powder choke, and also a 3/4 inch iron powder core choke, as can be seen in my device images. Even they are getting way too hot, and will melt down their coils insulation coatings if I run them for over 5 or 10 minutes.
What do you suggest that I should I change to? Or, what would you consider as suitable?
Normally one choke is what most self runners are using.
  I have used as many as three chokes on the Mazilli driver to light up 700w worth of bulbs, as I've shown on previous videos. And the chokes did get hot. Way too hot, as well, but the fets stayed cooler than they are getting now, but even then the fets were also getting hot in due time.
  I was hoping that the TL board with it's duty cycle controller would not allow the fets and chokes to get as hot, nor draw so much current, as compared to the Mazilli running at 100% duty cycle.  But, I guessed wrong.

  Anyways, I just bought a couple more new fets, so I'm good to go.
  Waiting for your replies...

Offline AlienGrey

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Re: Kapanadze Cousin - DALLY FREE ENERGY
« Reply #17216 on: May 19, 2017, 02:07:36 AM »
  apecor:  The Mazilli driver has been recycled and is not intact, so no, I can't compare the Mazilli with the TL board.
   What size, type, and number of windings are your yoke choke(s)?  As I can't understand how your fets are staying only warm.
How hot do your fets get when using 3 or 4 100w bulbs, while the bulbs are running at use able brightness?

   Hoppy: I am already running two chokes, a one inch yellow iron powder choke, and also a 3/4 inch iron powder core choke, as can be seen in my device images. Even they are getting way too hot, and will melt down their coils insulation coatings if I run them for over 5 or 10 minutes.
What do you suggest that I should I change to? Or, what would you consider as suitable?
Normally one choke is what most self runners are using.
  I have used as many as three chokes on the Mazilli driver to light up 700w worth of bulbs, as I've shown on previous videos. And the chokes did get hot. Way too hot, as well, but the fets stayed cooler than they are getting now, but even then the fets were also getting hot in due time.
  I was hoping that the TL board with it's duty cycle controller would not allow the fets and chokes to get as hot, nor draw so much current, as compared to the Mazilli running at 100% duty cycle.  But, I guessed wrong.

  Anyways, I just bought a couple more new fets, so I'm good to go.
  Waiting for your replies...
If you have chokes that are getting hot your incurring losses most likely the cores are low frequency or windings are badly tuned or windings are too thin note some cores are very low frequency whatever driver device your using it would be a good idea to make sure it's all in tune resonance bbut not all energy should come from the fets otherwise its a switch mode converter.

AG

Offline Hoppy

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Re: Kapanadze Cousin - DALLY FREE ENERGY
« Reply #17217 on: May 19, 2017, 10:06:41 AM »
Nick,

The primary problem is likely to be lack of duty cycle control due to supply rail spiking adversely affecting the TL494. You should see an improvement if you use a separate supply for the TL494 and fet drivers and star ground to the primary power supply. You will need to experiment with chokes once you have gained reasonable duty cycle control. Getting the snubbing right takes experimentation whilst studying the waveforms. As you are finding, its a steep learning curve! As a start, increase the size of your heat sinks and make sure you have good thermal transfer from fets to heatsinks by using new pads or grease.

Offline TinselKoala

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Re: Kapanadze Cousin - DALLY FREE ENERGY
« Reply #17218 on: May 21, 2017, 01:23:31 PM »
I just completed my construction of the TL494 + TC4420 halfbridge driver board. Seems to work fine so far. I'm using IRF3205 mosfets and they do not heat up appreciably. IRF830s did heat up more than I like. I don't have any spare P260s to try at the moment. The Base signals coming out of the 4420s have a Fall Time of under 5 ns, which pleases me greatly.
I'm using 400 pF of mica caps for the frequency (Pin 5) with 10k trimpots. This allows me to cover my own frequency range of interest (from around 125 to around 280 kHz or so, single channel). Snubbers are 10 nF + 22R.
No, I do not have the Kapa coil sets made up yet but early testing with some misc. inductive and resistive loads so far have not revealed any major problems.

Offline NickZ

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Re: Kapanadze Cousin - DALLY FREE ENERGY
« Reply #17219 on: May 21, 2017, 04:52:25 PM »
   TK:
   Nice!!!
   It's easy to see how it's all connected up that way. You mentioned the Kapa coil set up. Is that what you will use the board for?
   I see that you have a newer digital scope now also, not the older analog Tektronics one you were using before, which was similar to mine.
   So, I'm waiting to see how it all works out for you.
   Maybe place a link to some of your newer videos, also, as I see you've got some out on YT.

    Hoppy: I believe that you are right about separating the inputs from the TL circuit and the Fet drivers circuits. That can be the cause of cross interference to the signals. I'm waiting for my new voltage regulators which I've ordered, but in the meantime I connected up an older used 12v regulator to both TL and to the fet drivers, and I do see plenty of interference to the signal between them, connecting both up together in this way.
  I'll will separate the inputs today. As I already know that it will help, and that has been one of my signal issue problems at times, as the TL circuits and the driver circuits, work fine by themselves.
   I believe that I also have found the cause of overheating. It may have been the way that I had my yoke connections set up previously.
So, I'm trying a different yoke/grenade connection set up now, as Stalker has them, and will know more about it all soon.
As my fets only heat up when I connect them up to the yoke/grenade circuits, of course. But, that IS where the problem lies.

   Good luck with your new rig TK. It's good to see you posting your work here with us, again.
   Some of the old timers from here have been posting at OUR forum, but I don't see much positive results going on over there, or anywhere else, for that matter.
                               NickZ
   

Free Energy | searching for free energy and discussing free energy

Re: Kapanadze Cousin - DALLY FREE ENERGY
« Reply #17219 on: May 21, 2017, 04:52:25 PM »

 

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