Muller Dynamo

[crazycut06]

Hi Marius,
    What is the inductance and resistance of your coil?


@ All   
    I think speed up occurs only on a NS magnet configuration, but in an all NN or SS, magnet spacing is important so that in the middle of the magnets we will have a strong virtual field N-(S)-N-(S)-N.
    In my case i have a rotor all NN, magnet is (25mm x 13mm), spacing between magnets 3 times the size of magnets, im having a hardtime finding the speed up effect,  i think my spacing is too wide, and my virtual south is weak, need to change the rotor and see what happens...


Regards Cc

[konehead]

hi Mariu
In your twisted bifilar one half shorted other half to load video, what is the draw to the motor part of it spinnig the rotor, wihtout that coil being shorted  out next to the rotor magnets?
Just thinking maybe the coil short in first place makes for more draw to motor in first place, then when the load is applied and the speed goes up plus draw is lowered during the load to the other half of bifilar,
the rpms go up to where they would be when no shorted coil-half is presented to the rotor magnets...but if it makes it so the draw is less and rpm more than when the motor's rotor is spinning free with no hinderance of ferrite cores, or shorted coils, or loaded coils, then that would be a really great thing...
Also, is that speed-up under load affect limited to a particular rpm range??

[chalamadad]

You know when searching for the hat and find the shoes? Thats what happened today. Got the speed up effect with a ferrite bifilar coil.
Short one winding and at the other one put a load. In my case, connecting 50 leds  is not affecting the rpm. When connecting  12V/5W light bulb rpm goes up and the filament starts to glow

Excellent work, Marius!

[mariuscivic]

Hi Konehead and all you guys!

My rpm metter doesnt want to function tonight; have no ideea why.
When the rotor is spinning free with no shorted coil it takes 70mA.
When shorting one wound of the coil, rpm goes way down and the driving coil is taking now 250mA.
When shorting the second wound of the coil rpm goes up until the driving coil takes 150mA and rpm stays there.
So there are 80mA losts . That's why i said before that i dont see how we can use this effect since there are 80 mA lost.

On the other hand, if we can take that output and put it in another driving coil, this should rise the rpm reducing the 80mA lost. (i think).And the first wound of the coil can have a low resistance load, not necesary dead short.( i think)
I have tried this but the output is too small.
I forgot to say that i have build other bifi coils with twisted wires on sewing bobins and non of them had the speed-up.
Seems like if I want another , must replicate the existing one.

[Khwartz]

Hi all
Here is very latest pulsed-DC motor coil circuit, with bidirectional mosfets, and pulse-width control too,  plus look at the backemf/recoil collected with the steering-diodes going into 6 caps all at once - next step not shown is to pulse all those caps to a load when caps are disconnected from the drains of the mosfets whenever they hit a load in order to isolate them during the loading event of the caps
- the load could be a run-cap running the motor in first place....
thanks to Gyula for this, since he told me to try and put the caps neg leg on positive feed to coil and diode to drain...already I had caps neg leg on negative/source, and diode to drain, so this is now doing it both sides of mosfet at once and it doubles the output  - this looks "redundant" but splitting up the caps like this in to six fairly small ones makes it so if all caps hit load in paralell that is 1320uf worth of cap hitiing a load and the caps of this size fill up to 100VDC in a few seconds...already if I pulse a battery into a run cap before every pulse, the run cap needs to be around 850uf at only 12V to run the motor at near same rpms as compared to drawing directly feom battery, so this means it should be possible to loop the motor itself just from the backemf/recoil (!?!!)
here is circuit tested it tonight it works doesnt affect draw to motor while caps fill up.

Hi Keno! Looks good for the very close future!