Author Topic: Akula0083 30 Watt Self Running Generator. (Read 1275452 times)

Qwert · « **Reply #525 on:** April 02, 2014, 04:44:30 AM »

Hi.
For those who want to know something more about resonance. Are you aware of works of those guys: Minorsky, Mandelstam and Papalexi? I'm in possession of their works in pdf. Here are two of them. Only, they call it "Parametric Excitation" instead. See these links:
https://drive.google.com/file/d/0B-m4PqHpBHo-UGFBRnZFd1Rnanc/edit?usp=sharing 1950
https://drive.google.com/file/d/0B-m4PqHpBHo-Ylk3QmhFNy1hbVU/edit?usp=sharing 1935

I've decided to add three more works: two patents based on the above info and the original work (over 700 pages).
https://drive.google.com/file/d/0B-m4PqHpBHo-OHVMbG1WVkttOGM/edit?usp=sharing
https://drive.google.com/file/d/0B-m4PqHpBHo-WFNjam1vdzhjMVE/edit?usp=sharing

https://drive.google.com/file/d/0B-m4PqHpBHo-ZTR2V0YzTElkVHM/edit?usp=sharing

Circuit Nerd · « **Reply #526 on:** April 02, 2014, 04:15:40 PM »

Hello Everyone,

I have been following this thread since it began and have a question. With all due respect, how many of you guys have actually built the circuit and tested it. Not with a simulator, but actually built it?? It would be more interesting and productive to see people talking about their builds and test results instead of arguing over simulations and theories about a circuit that seemingly hardly anyone on here has actually built. For what it is worth, I have replicated the circuit faithfully to the letter both the original version and modded versions. None of them work as advertised. In fact, feeding ANY positive voltage from C3 through L2 to C11 causes the circuit to bog down and current draw to shoot through the roof. Looking forward to hearing results achieved by others.

Circuit Nerd

verpies · « **Reply #527 on:** April 02, 2014, 07:10:36 PM »

Quote from: Circuit Nerd on April 02, 2014, 04:15:40 PM

With all due respect, how many of you guys have actually built the circuit and tested it. Not with a simulator, but actually built it??

Four, and more are posting their builds at O.U.R. One member even had a PCB done for it, (see here)
The circuits work as in simulations, but then the circuit is not the mystery here...the transformer/inductor is.

Quote from: Circuit Nerd on April 02, 2014, 04:15:40 PM

For what it is worth, I have replicated the circuit faithfully to the letter both the original version and modded versions.

What modifications have you tried?
How did you wind the transformer (L1 & L2) and what core did you use?

Qwert · « **Reply #528 on:** April 02, 2014, 09:29:00 PM »

I can't resist to disclose this extremely unconventional book of C. P. Steinmetz of 1900, "Theory and Calculations of Alternating Current Phenomena", pdf download available:
https://archive.org/details/theorycalculatio00steiiala

Some more info about this guy:
http://inventors.about.com/od/astartinventions/a/Steinmetz.htm

Farmhand · « **Reply #529 on:** April 03, 2014, 12:44:56 AM »

Thank you for the files Qwert, can never have too many files to read. I copy reference material like this to my laptop as well.

Much appreciated.

Cheers

MileHigh · « **Reply #530 on:** April 03, 2014, 01:30:28 AM »

Qwert:

I looked at the table of contents and the fist few pages and the book is 100% legit, the real thing. There is nothing unconventional in the book, it's the same material that's still being taught to this day.

MileHigh

verpies · « **Reply #531 on:** April 03, 2014, 01:41:46 AM »

Grumage is getting HF negative pulses across R5. Go figure...

MileHigh · « **Reply #532 on:** April 03, 2014, 02:43:33 AM »

Quote from: verpies on April 03, 2014, 01:41:46 AM

Grumage is getting HF negative pulses across R5. Go figure...

My fist thought is that is due to a bump or step in the voltage on C3 associated with the switching. The C3 voltage is at the top of the LED array. The bump will charge C5 with a voltage step. Then C5 will form an RLC resonator with R5 and the interconnect wire inductance that forms the R5-C5 loop. So it could just be normal ringing. The ringing looks like it could be around 10 MHz. Does that sound about right? Picowatt would save the day. lol

I can't really digest Grumage's nice scope shot. I skimmed over earlier postings so I may have missed something. Nice to see things are progressing along!

MileHigh

Dave45 · « **Reply #533 on:** April 03, 2014, 02:47:31 AM »

Quote from: MileHigh on April 03, 2014, 01:30:28 AM

Qwert:

I looked at the table of contents and the fist few pages and the book is 100% legit, the real thing. There is nothing unconventional in the book, it's the same material that's still being taught to this day.

MileHigh

Sounds like a waste of time

sorry I couldnt resist lol

You know Im just kidding right

dave

MileHigh · « **Reply #534 on:** April 03, 2014, 02:54:23 AM »

You forgot to add the <rim shot>!

avalon · « **Reply #535 on:** April 03, 2014, 06:39:24 PM »

Quote from: Circuit Nerd on April 02, 2014, 04:15:40 PM

Hello Everyone,

I have been following this thread since it began and have a question. With all due respect, how many of you guys have actually built the circuit and tested it. Not with a simulator, but actually built it?? It would be more interesting and productive to see people talking about their builds and test results instead of arguing over simulations and theories about a circuit that seemingly hardly anyone on here has actually built. For what it is worth, I have replicated the circuit faithfully to the letter both the original version and modded versions. None of them work as advertised. In fact, feeding ANY positive voltage from C3 through L2 to C11 causes the circuit to bog down and current draw to shoot through the roof. Looking forward to hearing results achieved by others.

Circuit Nerd

I have tested the circuit in both Multisim and Cadance. On top of that I have actually built the circuit.
Both simulations pointed to almost identical results I have observed with the actual circuit.

The reason I have built the circuit was not based on an off-chance that the circuit would work although simulations tell otherwise but to use it for pulsed coil studies on my own.
The circuit is almost identical to the one circulating on the net with a small exception of the driver. I used IDDX609 instead of transistors.
Better, faster and more reliable.

Here it is...

verpies · « **Reply #536 on:** April 03, 2014, 07:04:32 PM »

Quote from: avalon on April 03, 2014, 06:39:24 PM

The circuit is almost identical to the one circulating on the net with a small exception of the driver. I used IDDX609 instead of transistors.
Better, faster and more reliable.

I also think that an integrated MOSFET driver is better, faster and more reliable, however I think that a laminated silicon steel EI core is not the same or better than a ferrite double E core in this application.

EI SiFeC core prevents a myriad of magnetoacoustic effects, has lower skin depth and inferior frequency rating.
That circuit behaves conventionally, the transformer possibly does not.

avalon · « **Reply #537 on:** April 03, 2014, 07:50:56 PM »

Quote from: verpies on April 03, 2014, 07:04:32 PM

I also think that an integrated MOSFET driver is better, faster and more reliable, however I think that a laminated silicon steel EI core is not the same or better than a ferrite double E core in this application.

EI SiFeC core prevents a myriad of magnetoacoustic effects, has lower skin depth and inferior frequency rating.
That circuit behaves conventionally, the transformer possibly does not.

The core in the picture is ETD49 (see below). However, using laminated core makes almost no difference whatsoever as far as the end result is concerned.

~A

starcruiser · « **Reply #538 on:** April 03, 2014, 08:53:24 PM »

@avalon, is the core center gaped at all?

MileHigh · « **Reply #539 on:** April 04, 2014, 12:34:04 AM »

Quote from: verpies on April 03, 2014, 07:04:32 PM

I also think that an integrated MOSFET driver is better, faster and more reliable, however I think that a laminated silicon steel EI core is not the same or better than a ferrite double E core in this application.

EI SiFeC core prevents a myriad of magnetoacoustic effects, has lower skin depth and inferior frequency rating.
That circuit behaves conventionally, the transformer possibly does not.

For sure on the MOSFET driver. A question that I don't have an answer to is at what switching frequency do you need to switchover to a MOSFET driver? For example, I think the output of a 555 can source and sink current. So a 555 connected directly to a MOSFET gate in very close proximity probably works fine to say, up to 10-20 KHz? I am assuming that you are using reasonable criteria to define when you hit a given high frequency where you stop.

For the transformer core issue, I think no matter what the configuration and core material, it either looks like (1) a "lossy bucket of energy with holes that allow energy to leak out," or (2) a set of meshed gears with normal frictional losses.

Let's see how the repo crew does with their replications. Fire up your scopes! Calibrate your probes!

MileHigh

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Author Topic: Akula0083 30 Watt Self Running Generator. (Read 1275452 times)

Qwert

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