Akula0083 30 Watt Self Running Generator.

[Circuit Nerd]

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.

Thanks

[MileHigh]

Wattsup:

Did you play Can't You Hear Me Knocking?  lol

@MileHigh

Are you considering that the transformer is a three gap E-core possibly running at resonance and not a standard transformer running at 60Hz forced reaction. Do the simulation programs differentiate between these coils types. If not then they may not apply.

There is a certain part of EE that may not consider any re-biasing of the secondary during part of the cycle. When I say re-biasing, maybe via an analogy of a swing, when the swing goes from right to left, the re-bias immediately sends the swing back to the right side so it can have a complete swing on the next release, thus providing a maximum swing on each release without losing momentum that would occur if the swing had to move back to the right hand side on its own.

Is there a way to simulate the copper strip?

I think we should forget the stop switch since this circuit is designed to operate with the stop switch shorted.

I'll be back later.

Where's the coffee.

wattsup

For the transformer, one or more gaps will significantly lower the total magnetic flux through the core for a given ampere-turn excitation.  I know there is a belief or hope that cutting one or more gaps will do something.  I will suggest something that I have mentioned several times before.  The best thing to do is make A-B comparisons, uncut and cut.  Or if you only have one transformer make a set of orderly measurements before and after you cut the gap or gaps.

So I view the cuts as degrading the performance of the transformer.  That's me questioning the design with my critical eye.  Verpies is the expert on magnetics and he is hoping for a big score so you never know!

I saw that the pulse waveform is somewhere between 16 kHz and about 120 kHz.  That means the transformer will be operating either in signal mode or pulse mode, depending on the state of the Stop switch.  You guys will have to do your builds but if the dots on the transformer in the schematic are accurate then things look pretty grim for the circuit with the Stop switch shorted.

When the Stop switch is shorted, the transformer acts in signal mode.   That means a voltage square wave on the input becomes a voltage square wave on the output.  You can reread my earlier posting but the secondary output of the transformer doesn't output to the LEDs.

When the Stop switch is open-circuit, the the transformer operates in pulse mode.  You fill the "bucket" of the magnetic core with a pulse of energy, and then the magnetic core dumps the stored pulse of energy into the LEDs.   It's just Bedini revisited.

As far as resonance goes, I don't expect that you will see that.  If you are seriously going to pursue that then you will need to define what resonant mode you are talking about, or observe it and figure out what mode it is.  Be forewarned that resonance can be a power hog, sucking up battery power with no real output.  For example, that's what pick-up coils in resonance on a pulse motor will do.

When you talk about the rebiasing, I don't quite get it but I would suggest to you and the gang to investigate that issue by making a timing diagram by observing multiple scope signal traces at key points in the circuit.  The issue is bridging the gap between the verbal speculation and the bench testing.  If there is any "swing" then you should be able to confirm or deny that by recording and analyzing the timing of the operation of the circuit.

For the copper strip, I suggested the A-B comparison testing.  I don't view the coper strip as being real.

I know that there is a lot of enthusiasm so perhaps a builder and tester will prove me wrong about the transformer and the copper strip.  If the gang could keep the same enthusiasm level going on the testing side and analysis side that would be great.  It's all about scoping the input and output signals for the transformer and then following the signal path to the LED array.

MileHigh

[Dave45]

This isnt perfect but gives an idea of the coil reactions, each coils bemf aids the other.
http://makeagif.com/i/X93gwp

[verpies]

When a coil is hit with a neg pulse it takes on a neg charge as a whole, pos ions will form around the coil then when the magnetic field collapses it will bring a pos charge into the coil.

What is the ratio of the pulse's wavelength to the length of the coil in this scenario?

[MileHigh]

Dave:

I am just going to repeat that the water analogy will help you.

Start with one simple example:

Myself and Verpies said that when the switch in his simulation closes and the battery is directly connected to the coil and the diode, that's when the coil is generating BEMF. 

So why is the BEMF there?  If you are not sure, take a serious look at the water analogy.  Can you see why the BEMF is there in the water analogy?  Imagine the water flows through the coiled hose with no friction.  That's just like imagining an electrical coil has no wire resistance.

MileHigh