Muller Dynamo

[teslaalset]

whenever I build a mullergenerator type of thing (have built lots of them for 9yrs) the most problematic things is that rotor to be spinning absolutely flat with no wobble - so that you couldnt see it spin at all if it was a totally flat disc -
and othe thing farily difficult to get right is  the tightness of the airgap betweenteh coils/cores and the rotor magnets. Etc. Etc.

Regarding disc wobble:
You might have a look at a posting I made on the experimenters thread:
the seconde halve of replay # 97 http://www.overunity.com/index.php?topic=10716.msg287935#new

The tolerances in vertical forces should be nicely compensated to get a nice and flat rotation.
Once it gets up to speed you will have the effect of a gyroscope though, so the disc will flatten out anyway due to speed.

B.t.w. I proposed a nice and relative cheap magnetic bearing construction in reply #96 of that thread as well.
Something to consider for improved models after succesful replicating the present one.

[konehead]

Another thing to include in the motor-coil circuit is a "run cap" that fires the motor coils, and have the motor coils "never see" the battery.

So for an example, you can pulse say once a revolution of the Mullergen through a halleffect or whatever, the battery into the run cap, and fill it up to 12V or so.
Do this IN BETWEEN the timing of the motor coil pulsing so it doesnt happen at same time as a motor pulse...

Now you have the motor coils running off a capacitor-only, and if you can just keep that "run-cap" filled up, then you have a looper simple as that.

The way to keep that run-cap filled up, from all those genrator coils, is via a "two stage' ouput circuit which is also fairly simple to do and there are different ways to do it but basically you need two switches;
switch #1 would be  normally ON switches OFF - this swtich #1 goes between the generator coil output and a DC type capacitor that is filled up by the gernator coil output after the FWBRs ...so this switch being normolly ON type, will connect gencoils to the "collector cap' lets call it.

Now you want to dump the collector cap into the run-cap that is running the motor, also perhaps once a revolution of the motor....

This is done by swtich #2 which is normall OFF and swtiches ON type of switch.
Now time both swtihces to switch at same time, and you have a "two stage" output circuit where the cap when it hits load, is disconnected from the "source" so that there is no "refleciton" or "lug" to the motor-draw during  this event.

In this case the source is generator coils on the Mullergen, and the load is the run cap running the motor.

one way to do this if you use mosfet drivers, and a NPN type of mosfet, is 4422 driver chip as the normallyON swticher and a 4421 driver chip as the normallyOFF switcher then two mosfets and a single halleffect controlling both driver chips but lots of other ways to do this two-stage output circuit  too.

If you find  you need (as an example0, a 2000uf size cap at 12V  for your run cap to keep it running being swtihced into battery once a revolution,
then you will need the collector cap to be approx 2200uf (to cover losses) and have 24V in the collector cap too, because when you dump a capacitor into another capacitor it becomes half the voltage in each capacitor.

Anyways there is way to loop one of these Mullergens pretty easy if you have enough power, and dont use too much power making that power!

[teslaalset]

A nice intro of understanding what kind of effect shortening of a coil has, is following lession from MIT on Eddy Currents, although it's a rather long video: http://www.youtube.com/watch?v=UpO6t00bPb8

If you want to skip the formula part, the central interesting part comes in from time = 40:03 where the phase lag of the current in a shortened coil is demonstrated and calculated.
In short: the phase delay of current is easily calculated by tangens phi= wL/R, where w = omega = frequency x 2 x pi.
The smaller the R, the bigger the current delay.
In theory the current delay can be max. 90 degrees.

A delayed current in a shortened coil in a generator setup can generate a 'magnetic kick' after the magnet has passed the shortened coil, due to the phase delay of the current.
The smaller the resistance relative to the coil value, the bigger the delay in magnetic kick, due to bigger delay in current.
Critical factors: speed of the magnet (determining omega), R of the coil, and L, the coil value, where R is extremely important.
This is why litze wire is used in critical setups.
The right combination will cause the desired magnetic kick.

Understanding the above also points to the optimum timing of shortening a coil in a generator setup.

@Wings,
If you read this, maybe this is a substitude theory towards the magnetic viscosity idea that may play a role here according to you and some other valuable contributors here. If you want to discuss that, let's do this at the 'experimenters' thread, ok?

[TEKTRON]

Took a little to find it..

Quote from Romero:

Let's clarify some points regarding the sensors:
not both of them are using the small magnets.I started originally with both using the small magnets to switch then I tried to move one to get max results.
The second one is facing the big magnets from the top.This one from the top is activated after the magnet passed, the other one on the side of the rotor is activated like 1mm after the magnet passed the center coil.
This is difficult to explain, testing yourself will get you there but do the testing separate not both of then at the same time.

Sorry to quote my own post but person that asked did not respond and I think I need to expand...

In the looped under load vid, the mags around the circumference of the rotor trigger half of the motor timing. The strength or the size does not matter. It is half of the timing for the Hall circuit.
The rotor appears to be 12mm thick. The mag appears to be 1/3 that thick. So 4mm diameter. As far as the length, The rotor magnets appear to be approx. 4mm from the edge of the rotor.  So I would say The circumference mags are 1.5 mm thick or less.

[powercat]

I found this interesting video this morning, sorry I do not have any more info.

Shop update Neo-Gen Dynamo
http://www.youtube.com/watch?v=aV4QGXlgTtg&feature=related