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Author Topic: Akula0083 30 Watt Self Running Generator.  (Read 1269761 times)

havuhung

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Re: Akula0083 30 Watt Self Running Generator.
« Reply #1005 on: April 29, 2014, 03:43:44 PM »
Hi All,
Updated values ​​on the schematic diagram components Akula0083-disassembled. . .

wattsup

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Re: Akula0083 30 Watt Self Running Generator.
« Reply #1006 on: April 29, 2014, 03:50:08 PM »
@all

Here we go again. I mention possible button battery in the those v3 pots and all hell breaks loose. Yes it is possible. Any OUers with a responsible mind would consider that especially when the AK30 has two encased pots producing 30 watts and the v3 producing a few watts has 4 encased pots.

It is also possible that two of those pots are used in series if they are used to adjust in the 1 ohm capacity so they may not have button batteries hidden in them. We don't know but there is no point trying to overly delve into it. It was just a responsible comment.

@TK

Over at OUR in my last post I asked several questions regarding the official AK30 schematic. Not one answer or comment on those points and I will not move forward if they are not considered.

Basically we need a qualified EEer to look over the circuit and mostly the resistor, cap and pot values around the main IC and confirm that those values are within the acceptable levels for this IC to function at its peak frequency range.

You see, we get inconsistent information all the time. @T-1000 just posted that the resonance has to reach the cores resonance (simply put) to have some "nuclear" effect. But how the hell do you except to achieve anything of that level if your circuit is locked at 300KHz. Something is wrong with the values.

My preliminary tests show no resonance worth considering below 300KHz, with very high peak resonances in the 490KHZ - 1.2MHz range. Then we have the fact that the official photo of the circuit board does not match the diagram. The diagram shows three mosfets, the board shows two including a JFET type that is not even mentioned on the diagram. The actual ecore has three coils where the circuit only shows two, etc, etc.

So if you or any other qualified person can take a forensic look at the circuit, values, IC pdf, etc and ascertain their appropriateness this would be of great assistance to all. Particular concern is off pins 5 and 6. Seems to me pin 5 should be a 1n and pin 6 should total 500k but all would have to be confirmed in case Akula decided to change the real values before he published the schematic.

Then it will be to reconcile the fact that the Ecore has three coils with a total of 5 wire connections, not 4. That will be another point to figure out.

@all2

There's other sleuthing that still needs to be done. Someone with good visual component ID skills needs to look at the AK30 circuit photo and match all possible components on the board photo to the same schematic in order to identify which components on the board diverge from the schematic.

wattsup


br549

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Re: Akula0083 30 Watt Self Running Generator.
« Reply #1007 on: April 29, 2014, 03:53:56 PM »
Hey BR549,

Good Question. The look pretty good to me. See attached Pics.

All the Best

  Chris

Chris:
I think your right. The lighting is a little different, but I think they also; both look the same.
I am currently building the Akula device that uses the MC34063A/E, but have been looking at
this one. (Depends on how the first on works out).
thank you;  br549

tysb3

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Re: Akula0083 30 Watt Self Running Generator.
« Reply #1008 on: April 29, 2014, 04:52:23 PM »
@wattsup
.
wattsup:
"@T-1000 just posted that the resonance has to reach the cores resonance (simply put) to have some "nuclear" effect. But how the hell do you except to achieve anything of that level if your circuit is locked at 300KHz. Something is wrong with the values."

T-1000:
"In this case the LC resonance frequency must match ferrite natural resonance frequency or its harmonics."

for example: if you have yours transformers ferrite resonance 2.23 Mhz, you could reach the core resonance excitation with coils resonance on 22.3 Khz or 223 Khz
« Last Edit: April 29, 2014, 09:47:37 PM by tysb3 »

alejandroguille

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Re: Akula0083 30 Watt Self Running Generator.
« Reply #1009 on: April 29, 2014, 04:58:28 PM »
Hi All,
Updated values ​​on the schematic diagram components Akula0083-disassembled. . .

Uses two TL494, right?
You could try it?

TinselKoala

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Re: Akula0083 30 Watt Self Running Generator.
« Reply #1010 on: April 29, 2014, 06:10:33 PM »
Hi All,
Updated values ​​on the schematic diagram components Akula0083-disassembled. . .

The folks at OUR have examined and translated this schematic, see the attachment below. I am making a parts run this afternoon so I would appreciate knowing if this is the Official Approved Schematic for this version of Akula's many different devices.


TinselKoala

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Re: Akula0083 30 Watt Self Running Generator.
« Reply #1011 on: April 29, 2014, 06:20:40 PM »
@watts:
I'm frustrated too at all the changes and inconsistencies. And the BS as well.

The 3V circuit, which is what made the scopeshot above, acts as a very sensitive EM detector. It "resonates" more like a radio receiver. The frequency of the sensitivity is determined by the transformator inductances and couplings, _almost_ as described by tysb3 above. Is there a phase-locking or frequency harmonic locking involved? The fact that the spike frequency in the bursts varies would seem to contradict that hypothesis.

Anyhow, I am going to assemble the circuit I posted above and go from there. The one I am working with right now, I think I've at least tracked down how to get close to the Akula scopeshot above. The tuning is incredibly sensitive.

When comparing these shots, please consider that we have determined, I think, that Akula's "50 V/div" setting is incorrect due to his probe being at 1x instead of 10x. So the trace is really indicating 5 V /div... but the scope also has less resolution at the 50v/div setting so you aren't seeing the true waveform envelope on his top trace. I apologize for scoposcopy.....


Grumage

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Re: Akula0083 30 Watt Self Running Generator.
« Reply #1012 on: April 29, 2014, 06:30:44 PM »
The folks at OUR have examined and translated this schematic, see the attachment below. I am making a parts run this afternoon so I would appreciate knowing if this is the Official Approved Schematic for this version of Akula's many different devices.

Dear Tinsel Koala.

The schematic you have posted seems to make more sense to me than the one posted at the top of this page !! Am I correct in saying that the lower TL494 and it's associated components will create an inverted drive to the Mosfet ??

Pulses driven in alternation and at a different frequency will create a form of "Havoc" within the Ferrite material. Might just tempt the Genie out of his box !!  :)

Cheers Grum.


havuhung

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Re: Akula0083 30 Watt Self Running Generator.
« Reply #1013 on: April 29, 2014, 07:07:52 PM »
The folks at OUR have examined and translated this schematic, see the attachment below. I am making a parts run this afternoon so I would appreciate knowing if this is the Official Approved Schematic for this version of Akula's many different devices.
Hi TinselKoala,
Yes, there will be more resources for reference and perform for circuit assembly actually run!!!  Value of C3, C4, if the value is 3 nF hard to find, because manufacturers often produce convergence 2.2nF or 2.7nF!. . Transistor VT1 and VT3 can be replaced with 2N3906 or BC547, BC557.

mrzlica

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Re: Akula0083 30 Watt Self Running Generator.
« Reply #1014 on: April 29, 2014, 07:09:29 PM »
Hello TK,


thanks for your effort with the akula device..
I'm just begging to worm my self to up and start experimenting.
If somebody on the forum is willing to post the pcb for the above sheme
I will appreciate.
good luck m

havuhung

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Re: Akula0083 30 Watt Self Running Generator.
« Reply #1015 on: April 29, 2014, 07:27:02 PM »
@mrzlica,
In the meantime post printed circuit  TK beautiful, you can see the original circuit in Russia forum (Realstrannik.ru) here:
Re: Self Running Generator Akula0083 30 Watt.
«Reply # 972 on: April 27, 2014, 07:48:04 PM»





mrzlica

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Re: Akula0083 30 Watt Self Running Generator.
« Reply #1016 on: April 29, 2014, 08:33:03 PM »
@mrzlica,
In the meantime post printed circuit  TK beautiful, you can see the original circuit in Russia forum (Realstrannik.ru) here:
Re: Self Running Generator Akula0083 30 Watt.
«Reply # 972 on: April 27, 2014, 07:48:04 PM»

Hi, Havahung
can you please post the complete link?

by, m

alejandroguille

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Re: Akula0083 30 Watt Self Running Generator.
« Reply #1017 on: April 30, 2014, 04:08:43 AM »
Hi TinselKoala,
Yes, there will be more resources for reference and perform for circuit assembly actually run!!!  Value of C3, C4, if the value is 3 nF hard to find, because manufacturers often produce convergence 2.2nF or 2.7nF!. . Transistor VT1 and VT3 can be replaced with 2N3906 or BC547, BC557.

Because there is such a difference, what is the real?

TinselKoala

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Re: Akula0083 30 Watt Self Running Generator.
« Reply #1018 on: April 30, 2014, 05:33:18 AM »
Hi TinselKoala,
Yes, there will be more resources for reference and perform for circuit assembly actually run!!!  Value of C3, C4, if the value is 3 nF hard to find, because manufacturers often produce convergence 2.2nF or 2.7nF!. . Transistor VT1 and VT3 can be replaced with 2N3906 or BC547, BC557.
If I don't have the exact values for the small caps, I will make up the needed capacitor values from these small high-quality barium titanate caps that I have. They look like diodes but they are solid chunks of dielectric in a glass envelope.

The schematic I am wanting to use only has one PNP transistor mosfet-cutoff, on the lower mosfet. I see other versions have this sub-circuit on both mosfets. WTF? The lower one is clearly designed to turn the mosfet off hard, which will make the largest spike in the transformator and have the largest effect on the other coils. The top 494 oscillator / mosfet driving the smallest coil doesn't have this part in the circuit I saw, and I don't know if it is supposed to go there or not. I'll be able to do it either way. The transistor crosses to ECG/NTE374, PNP silicon, Vceo -160V, Vebo 5 V, Ic 1.5A, 20 Watts, fT 140MHz, in a TO-126 package. Industrial strength. I picked up 2 at my local supplier today. But probably the much cheaper small-signal PNPs you list would work fine too .... for certain values of "work".

 ;)

TinselKoala

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Re: Akula0083 30 Watt Self Running Generator.
« Reply #1019 on: April 30, 2014, 05:40:52 AM »
Dear Tinsel Koala.

The schematic you have posted seems to make more sense to me than the one posted at the top of this page !! Am I correct in saying that the lower TL494 and it's associated components will create an inverted drive to the Mosfet ??

Pulses driven in alternation and at a different frequency will create a form of "Havoc" within the Ferrite material. Might just tempt the Genie out of his box !!  :)

Cheers Grum.
I don't know yet until I build it. The 494 makes two outputs, complimentary, on its own, IIRC, you can use a single one to drive a full H-bridge. It looks to me like the lower 494 is the "primary" one and the upper one is used to make a different frequency or perhaps gate the output of the first one, and mix it all up in the transformator.
From the data sheet:
Quote
The uncommitted output transistors provide either
common-emitter or emitter-follower output capability.
The TL494 device provides for push-pull or single-
ended output operation, which can be selected
through the output-control function. The architecture
of this device prohibits the possibility of either output
being pulsed twice during push-pull operation.

If I can break a ferrite core by "chaotic resonance" (tm TKLabs) with 3v at 100 mA.... that will be something! Oh wait... this is a 9V circuit. Never mind....

 8)