Quote from: webby1 on 2026.09.22, 02:10:50I cleared my cache and closed the browser and tried to log in and it failed, clicked the back button on that failed screen and then hit the login button again and I am logged in again.

I have that same problem on my smart phone but not on my PC.  I just accept it as quirk.

Thank you for those results, they are significant.  I offered this experiment here https://www.overunityresearch.com/index.php?msg=118188 and the following posts show Itsu doing this with a single iron wire.  He got about 4 microvolts before losing the results and not being able to repeat them.  You got 5 microvolts per iron wire so similar.  Is your experiment repeatable? Please note that in this experiment with a magnet the B field passing from the iron into the solder connection is continuous, meaning there is a B field within part of the non-magnetic wire, whereas in the ring-core that is not the case.  That could offer a better result for the ring-core flux concentrator.

Smudge

OK, this is my attempt to follow up on Verpies post #7 suggestion "Show us the traces from two synchronized channels of your scope". Channel 1 probe  (X 1) is direct connect to a little torrid with 100 turns of AWG 26 magnet wire and a 22 ohm burden resistor and a single wire thru it on one wire leading to the primary and at  .2 volt setting ..... Channel 2 is  as before with P4100 probe at primary connections. Voltage setting at .5      Did I get these positions right ?



 
https://www.youtube.com/watch?v=y2bT5mv8X34

Dear Mr. Smudge! Thank you for sharing this idea!
I did a simple experiment with your basic design the other day.
I didn't see any obvious results, so I didn't report it to you.

Today, it seems I got some good results, so I'm reporting to you.
I understand your idea,
which can actually be considered as power generation from a static magnetic field.
Then I modified your design by placing the Fe wire on a permanent magnet.
To observe it more clearly,
I connected 5 Fe wires in series and soldered copper wires to both ends of the irons.
All my measurements were recorded after things stabilized,
estimating that the thermoelectric effect due to temperature difference was negligible.

Multiple experiments gave roughly these results:
with no magnet, the multimeter read 0.000 mV;
placing the Fe wire on an N35 magnet, the reading was 0.025 mV.

I can only say that there was a relatively clear voltage appearing.
My measurement setup is really too ordinary, just a very common 4-3/4 digit multimeter.
So my measured results can't serve as proof.
I hope that you or other experts can conduct further experiments.
Sending you my sincere respect! Thank you, Mr. Smudge!

Looking at your Half Bridge setup, i do not think the csr is in the correct position for this schematic.
IMO it will only measure the current going through the lower MOSFET, thus at 50% duty cycle will show about half of the real current.

Anyone correct me when i am wrong?

Itsu

I cleared my cache and closed the browser and tried to log in and it failed, clicked the back button on that failed screen and then hit the login button again and I am logged in again.

This is the last one I was keeping up with and I sure hope its correct. The correct fet part # is IMW120R030M1HXKSA1. Some TVS diodes are in there but missing on the pic. Better FWBR also. Thanks

Quote from: Smudge on 2026.09.21, 07:19:47The effect is not just the magnetic gradient, it is also the electron spin polarisation.  With zero polarisation (as in non-magnetic conductors) there is zero effect from the magnetic gradient.  The situation at the connection points is far more complex than my or your simple statements on this subject.  The magnetic simulations show a reduction from the internal field to almost zero external field over zero distance, but that is too simplistic. At the Fe to (say Cu or solder) junction the surfaces are not smooth so there will be atomic or molecular mixing through the magnetic gradient.  The spin polarisation over that distance will not be the same as that which occurs in pure Fe, so I challenge your view that the gradient-induced voltage there will produce a net zero effect.  I think an experiment could settle the dispute.

Having recently returned to doing experimental work I have obtained some 99.5% purity Fe sheet 0.5mm thick from Advent Research Materials http://www.advent-rm.com.  The sheets are 10mm square and cost about £20 each.  I have found a local company that does laser cutting who have cut me the shapes I want at a cost of £30 each.  I could easily produce the flux-compressing ring-core shape required for this experiment but I do not have equipment to measure in microvolts.  Many years ago Graham Gunderson sent me an amplifier that would do the trick but that is now in the posession of Itsu.  It could measure the Seebeck effect of the temperature from your fingers when connecting a croc clip to some circuitry.  I could send a shaped ring-core to Itsu if he agrees to do the experiment.

Smudge     

To measure microvolts, there are some 'vintage' instruments. I have an HP3468A, which is very reliable. But I see it still costs around £100 even today (https://www.ebay.fr/itm/267638249097).

I recognise that the issue of interconnection is complex, particularly with regard to spin polarisation. The devil is in the details, which are difficult for us to grasp from a theoretical perspective. Experimentation is necessary. It's brave to undertake this, as it's not easy and requires an investment, but the idea is worth testing. I'll be following this with interest.

Ok, that might work, but we need the complete schematic to be sure how your half bridge is build up.
You mentioned a LTspice schematic in the video of an earlier design, so do you have one of this present one?

But even if that csr is OK where it is, you still need a second probe to simultaneous measure the input voltage to be able to calculate the input power.

Also, what is the load, i see some pancake coils and later on some heavy duty? leds.

Itsu

I quickly logged out and then back in and I logged in the first time,, no failure.