Muller Dynamo

[konehead]

About the scope shot what happens is the front-edge of approaching magnet makes the actual peak, the back edge of magnet makes a sort of negative peak too -  this is seen as the flat-area after the peak,  in those scope shots, where the backedge of manget is reacting to coil and core.
substitute that flat area with another magnet in between of opposite polarity, (N-S-N-S rotor) and you will have AC signal now and that same flat area will instead be opposite polarity peak of sinewave.

Think of the hockey puck magnets instead like a square shaped block-magnets, and of course the leading edge has a pole, and the back edge has its own pole too.
when you drive a rotor magnet around with pulsed coil, its the EDGES of magnet where you to pop the motor coil when coil is centered to them, to have most power....and you can flip polarity of coil and both pull then push rotor manget around once after the other too if you want....
some of this doesnt make sense in mind, since it seems then like with hocky puck magnets you would want to spin them around first befgore mounting in rotor, in order to find how the magnet was "cut" to find those poles that go sideways, but this doesnt really work out if you try it... I think the flatsurface in hockeypuck magnets jsut overhwhelmes everything else is reason but dont know for sure...but at same time, those edges is where the power peaks are...

If you want an AC-signal run MOTOR in Muller flat-rotor configurations, make your rotor magnets same distance apart measured edge to edge as the width of your magnet, and any AC signal will hit the magnets push-pull-push-pull...this must be done with ALL N magnets or all S facing magnets...if N-S, now then it gets out of synch with AC fed signal runnign it as motor..
In this equal-spaced configuration, a rotor of only two magnets both facing N, will run at 1800rpm on 60hz signal as an example...
I have made quite a few motors like this  - its fun to run something with "no switching" just AC sinewave spinning it...most of time the motors draw goes down under loading of the shaft too - but no speed up since its runnign on constant AC signal speed.
Who knows maybe Romero has taken advantage of this (doubt it but could be) in his all-N rotors somehow and there is motor-effect happening maybe from the backemf but doubt it just more wild guessing...

With N-S-N-S rotor magnets, you can make a good AC sinewave, and be able to run stuff with it too, like AC induction motors (rotovertor - have done this alot too),  but you have to experiment with core size and coil widths and spacing  and rpms to make a perfect looking sinewave (squarewaves or edgy-peaked squarewaves run rotorvertors fine however).

Usually aircores with N-S mangets will show that double-hump "edgy" square wave, with peak sagging in middle, since the very center of rotor magnets to the very center of magnet is sort of like eye of hurricane and it is the EDGES of magnets that have the peak-power.

With cored-coils this is different, you dont get the sag so much but everything depends on eveyrthing like rpms and coils size and core size and spacing for what your scope shows.

[4Tesla]

Amazing vid.  I have sent the inventor an email in hopes of getting a schematic for his design.

If you get anything.. please do start a thread.. or maybe start a thread anyway.  It would be cool to see if it can be replicated.

Thanks

[scratchrobot]

As to the rest of your reasonings, answers can only be had by practical tests.

rgds, Gyula

I love the reasonings but I also don't think it wil solve our problem.

[Tudi]

http://www.youtube.com/watch?v=ogLeKTlLy5E

Translating that to a muller setup. I think if you have a big enough airgap between your rotor and your coil to be greater then the distance between the generator coil and the driver coil. Then the back EMF will arc into the driver coil and enhance it's strength. The same effect as when you put a PM on the back of the driver coil. This will give the enxtra speedup / reduction of the input power.
This also explains why putting the second generator coil will probably not scale the effect as expected. It will be to far away from the driver coil and will get it's back EMF induced in a moment when it cannot arc into the driver coil OR it has a contrary effect ( repulsion instead attraction ).
This theory also explains why after experimenting RomeroUK switched from the driver coil setup from PUSH to PULL setup. As someone explained here nicely with the papers and the moon phases when he's motor was driving the generator coil wanted to help a PULL force rather then a push force.

This also explains why Romero had to adjust the distance of the extra magnets to he's gen coils. It was probably creating a multi step EMF arc path to the gen coils. Ofc this would work only for specific strength magnets with specific distances between coils. Probably insanely hard to experiment with proper values.

If this theory si true then there is no reason to have more then 1 gen coil. Instead make the gen coil big enough to be able to generate more output then input.

If this theory is true then there should be a mathematical formula to get the spacings between magnets and coils to maximize this effect. You want to get your generator coils as close as possible to rotor but due to the size of the coil you might not be able to be close enough to the driver coil also. So the distances are probably related to the size of your coils.
Share your feelings

[e2matrix]

i'm almost sure that repeating sine wave form is caused by an NNNN or SSSS setup.
I think NSNS looks more like some boobs, 2 bumps uper side then 2 bump on the lower side.
So want to buy a scope in the weekend, it's like one of the best adult toys one can buy.

LOL !  I agree that RomeroUK was very certain in stating the all South up configuartion in the rotor and I'm sure he was not confused on that matter.  And I agree scopes are fun and fortunately I bought 3 of them when I had money....  although you can certainly find good deals with some effort on fleaBay. 

edit to correct North to South facing up