Is this the first selfrunning overunity motor w/o batteries ? Mike?s motor

[Peterae]

Hi Darren
Thanks for the magnet links,
i will bear that in mind, i will try Amazon in the future.
I can confirm the ssr is working correctly, because shorting the output terminals has the same effect as driving the input of the SSR with voltage from the psu.
With the ssr shorted all the time i am now running at 8.5 volts with a reading of about 100mA on digital meter to sustain rotation. I am using an un-calibrated variable voltage and current supply .
I won the scope .

Peter
PS is it worth me trying the high gain Q1 with increased base resistor.

[z_p_e]

Helmut.

This is true, although with a high-permeability core, flux can be engineered to flow where we want.

My understanding of how to maximize both the generator and motor effects in this device is to have both the magnet pole face and coil windings as parallel to each other as possible. The shape of the coil on the ends is of no real concern, but ideally will be perpendicular to the magnet pole face to minimize interaction.

I guess that's why a square shape makes sense in this case.

And note that in practice, square cores are used all the time for transformers etc.

But having said this, I'm sure yours will run also.

Darren

[z_p_e]

Peter,

Have you tried taking L3 and the SSR out of the circuit? How well does the motor work with just L1, L2? Do you have a cap in there as well? Try taking it out too if there is one.

See what it takes to run the motor now, and use that as a baseline.

I think one of the first goals after building the motor will be to see if it will run on 6V, as that is apparently what Mike's ran on. Do you agree?

It's interesting that the motor runs better with the SSR shorted. You're kinda shorting out one of the FWB diodes through L3 and D2 by doing that. But 8.5V @ 100mA is good so far It also seems right in line with my model, because looking at the Q3-C current with the new inductance values, it is roughly a square-wave of current between 0mA and 80mA with a 6V supply voltage.

As far as adjusting Rb, I'd leave that at 10 Ohms for now. Just to stay in line with Mike's setup. You can always do the tweak later. Altering Rb will change the waveforms too.

Congrats on the scope

Darren

[SPP-48]

Hi Sam
good luck with your new build, on your working motor what was your min voltage that causes the rotor to run constantly.

It will be interesting to see the difference the new magnets make on your machine, mine are unknows so could be a possible problem, i think i will look around today for a source.
I'm going to try and balance my rotor today
Peter

Hi Peter

My motor will run on 2 x 1.2v AA rechargeables. It ran (albeit slowly) for seven days on the same batteries. I spent a lot of time balancing the rotor and fitting a reasonably heavy flywheel.

Although it runs well under power I believe it has the wrong coil magnet ratio, as evidenced by the waveforms. The only thing that seems to change the waveforms is adding or removing magnets, but that can only go so far. I can't really do anything with the coil without damaging it. My 3 coils ended up at around 150 ohms each but the magnets (2 stacked) are only 1500 gauss. I think getting the right magnet coil ratio is the most important for a successful build.

So?another motor it is.

Cheers

Sam

[Gustav22]

re: magnet shop for shipment in EU

The other day I ordered some magnets from
http://www.ibsmagnet.de/

I rang them up after inserting the order and offered to pay in advance (to save on addtional charges) and they posted them from the shop im Germany to Italy with no problems.
(note: I am not in any way affiliated with the shop)