Author Topic: Akula0083 30 Watt Self Running Generator. (Read 1275922 times)

br549 · « **Reply #930 on:** April 25, 2014, 01:51:19 PM »

In regards to fake or not - build one as per several videos yourself with Strontium based ferrite core and achieve same scope shots then we can talk..
[/quote]

I have several cores laying around, but I am not sure what they are made of. I was wondering if anyone has measured (or could measure) the resistance of of a Strontium based ferrite core for reference.
The cores that I have,,,, have a resistance of 42 k ohms (measured with my VOM Meter leads about one inch apart.
As always, thank you and have a great day: br549

MenofFather · « **Reply #931 on:** April 25, 2014, 02:34:30 PM »

Quote from: br549 on April 25, 2014, 01:51:19 PM

In regards to fake or not - build one as per several videos yourself with Strontium based ferrite core and achieve same scope shots then we can talk..

I have several cores laying around, but I am not sure what they are made of. I was wondering if anyone has measured (or could measure) the resistance of of a Strontium based ferrite core for reference.
The cores that I have,,,, have a resistance of 42 k ohms (measured with my VOM Meter leads about one inch apart.
As always, thank you and have a great day: br549

Why you need know core resistance?
By way, I have exatly core like in akula video, I get it from flayback transformer of monitor CRT.

Dave45 · « **Reply #932 on:** April 25, 2014, 02:40:44 PM »

V8carlos was doing the same thing only he used a bifilar wound coil and ran the bemf around and through the other winding.
He reported anomalous results as well, just never showed a self running device.
The principle is basically the same.

MenofFather · « **Reply #933 on:** April 25, 2014, 02:45:49 PM »

That I can say about akula latern with flayback core? One frenquency is 4-7 herc or 15 kiloherc about, other about or 15 kiloherc or 400 kiloherc about. Duty cycle one frenquency and other is 45 precents from TL494, but that probarly not wery important that duty cycle. Here is two primaries coils and one secondary. One primary have about 7 turns, other about 12 turns and secondary about 19 turns. From secondary going to shotkeys 4 diodes to get DC curent to icapasitors. From this capasitors getting energy primarys coils that is pumped with mosfets. One mosfet for one primary coil. Baisicly, I think, two primaries can have same numbers of turns, 11-13 turns. Need then ajysting replase places ends of one coil/ Then again ajust. How you see, then he disconect battery, then LED light dimer, because it then work not on 9 volts, but let say on 7 volts, so better run from 6 volts this circuit and then curent drobs to zero, then is selfrunning.

havuhung · « **Reply #934 on:** April 25, 2014, 02:48:44 PM »

Quote from: Dave45 on April 25, 2014, 01:37:27 PM

The basics
The core of the devices

Hi Dave45,
Have the way to a screenshot. jpg example? select the component elements placed on this screenshot, from electronic circuit drawing software! do so for comparison with components on the circuit board assembly Akula. But when creating new files, from electronic circuit drawing software to allow only a blank page to work!
Comments help. . .

Regards

Thestone · « **Reply #935 on:** April 25, 2014, 02:51:00 PM »

Quote from: havuhung on April 25, 2014, 07:20:45 AM

Hi Thestone,
Components for the assembly to the circuit board for testing. I was just a bit of experience: About ferrite core you can find in the old CRT monitor it very cheap but good quality. These components subject to high voltages such as ceramic capacitors, MOSFET, diode current working voltage and large, you should not use the product in China, because of the extraordinary damage (unnecessary) headaches!!! But if source electronic components provides new Ebay USA, there is nothing controversial.
Hope that helps

Regards

Thanks for your Comment havuhung, but I been buying things from china directly for many years and never had problems, the web site where I buy things is aliexpress.com.

Besides the fact that 99% of the electronics in the world comes from china... you phone, your tv, you computer, all electronics components, etc... and I am in Mexico, when I buy something in china, they send it free, and takes 15 days to get here, but I save me 80% of what I can buy it on the stores here...

But I was looking just to buy the core, not the flyback and take out the core... someone has to sell it...

Thanks.

wattsup · « **Reply #936 on:** April 25, 2014, 02:55:20 PM »

Quote from: Dave45 on April 25, 2014, 01:37:27 PM

The basics
The core of the devices

No man, that's not it.

The primary is two winds in bucking mode (center tap) and pulsed from BOTH the outside ends. hahaha We have been barking up the wrong tree for a while.

@all1

About the PS that everyone was making a big stink about. If it has a low voltage input alarm and shut off, Akula must have disabled it. If it does not have such a feature, then he is using the PS as a voltage to amperage converter or he could even be using this backward. Actual minimum input voltage would not be an issue. The seal is broken, so what? Any respectable OUers would have all his PSs open at some time or another if not to replace a blown component or to see how it works or to modify it. Just normal OUer activity so why make such a stink besides to waste so many pages.

@all2

Can you all please refrain from over posting on this thread. Maybe consider that everything you need to say is not directly related to the device, then keep it for yourself. We don't need 70 opinions of nail color. If you can sleuth and map the AK30 board photo to the schematic diagram on that same page that would be considered as "useful" for moving forward.

wattsup

Dave45 · « **Reply #937 on:** April 25, 2014, 02:59:09 PM »

Notice the similarity's

havuhung · « **Reply #938 on:** April 25, 2014, 03:03:34 PM »

Hi Thestone,
I agree with you, just my own opinion, when I repaired my inverter having problems burning components originating from China!!!

Ferrite cores you can still order from Alibaba. . .

Dave45 · « **Reply #939 on:** April 25, 2014, 03:09:11 PM »

Quote from: wattsup on April 25, 2014, 02:55:20 PM

No man, that's not it.

The primary is two winds in bucking mode (center tap) and pulsed from BOTH the outside ends. hahaha We have been barking up the wrong tree for a while.

wattsup

Yes it can be done like your thinking with a little help

I have not finished building this, so no guarantee's

Jeg · « **Reply #940 on:** April 25, 2014, 03:34:46 PM »

Hey Dave
Do you know the frequency range that mazzilli can reach? Especially without tank capacitor at the primary just with the capacitance of the mosfets, what would be the maximum switching frequency?

Thanks
Jeg

br549 · « **Reply #941 on:** April 25, 2014, 04:04:33 PM »

Quote from: MenofFather on April 25, 2014, 02:34:30 PM

Why you need know core resistance?
By way, I have exatly core like in akula video, I get it from flayback transformer of monitor CRT.

Different core materials have different resistances. I am just trying to determine what type of material is in the cores that I have on hand. There is no numbers on the cores.
As alwaysw, thank you and have a great day.
br549

T-1000 · « **Reply #942 on:** April 25, 2014, 04:33:22 PM »

Quote from: Dave45 on April 25, 2014, 03:09:11 PM

Yes it can be done like your thinking with a little help
I have not finished building this, so no guarantee's

The connection o negative side from Mazilli should pointing to that diode bridge instead. Then second connection from diodes AC side to the negative. In other words - the tranformer primary should be connected as choke and its output looped back to the input.
Otherwise you have conventional transformer circuit....

Dave45 · « **Reply #943 on:** April 25, 2014, 11:23:18 PM »

Here's where the circuit gets a neg boost to drive the primary's

Dave45 · « **Reply #944 on:** April 26, 2014, 02:36:52 AM »

Quote from: Jeg on April 25, 2014, 03:34:46 PM

Hey Dave
Do you know the frequency range that mazzilli can reach? Especially without tank capacitor at the primary just with the capacitance of the mosfets, what would be the maximum switching frequency?

Thanks
Jeg

Hey Jeg
Not sure, the cap and coil turns regulate the frequency,If I remember correctly mine ran at 21kz with 10 turns 18 ga on each side with .68uf 1000v cap.
Its been awhile since I ran it, hope to get time to put it together again this weekend.

I havent ran it without the tank cap, the drawback with the mazzilli is the high amp draw but I hope to bring that under control.

Something interesting that I intend to explore more, I wound a toroid like a joule thief and hooked it to the mazzilli, the joule thief coils wouldnt let the circuit push current through so the amp draw was nill and was getting some serious bemf. magamp.

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Author Topic: Akula0083 30 Watt Self Running Generator. (Read 1275922 times)

br549

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