Akula0083 30 Watt Self Running Generator.

[avalon]

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]

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]

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]

@avalon, is the core center gaped at all?

[MileHigh]

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