Muller Dynamo

[muzzz]

  looks like we have a working replication of sorts ,very good video on glass table ,requires spun up to 1100 rpm before it will self run and accelerate

http://www.youtube.com/watch?v=VVZJOAFrp9w&feature=feedf

[Rawbush]

And he doesn't want to disclose any info!

[konehead]

is that a "selfrunner" or not in the video by Mark of energetic forum?

he doesnt say it is anytime in the video...

looks like button-battery on it in front of bottom coil??

just wondering - I dont doubt it is a looper - but he doesnt say it is which is wierd  and everyone is assuming it is....

[konehead]

Hi chalamdad

For a bidirectional mofset, all you got to do is connect the gates, and the source leads of two mosfets, then swtiching occurs betweent he two "leftover" drains leads...the peak period is sort of a "no-mans land" which way current flows, so thats why its best to have bidirectional mosfets - reed switches dont worry about which way current flows either - thats why they work well shorting coils, plus fact their resistance is ultra low...

Also you mentioned a couple posts ago that you thought it would be good to give some "relaxation" time to the coil as a sort of reason why not to short the coil a second time at that negative peak you see in the scope shot you put up...

Just wanted to say that there is no relaxation to the coil or core when if flips polarity!   thats the point of least-relaxation really....

So that negative peak is where you could install another reed swtich to short the coil...I know that I was doing this with a motor coil, and the pos peak is already "spoken for" in that it is what is pulsing the rotor magnet around (plus I pull out the backemf/recoil right after swtich closes up there at pos peak I didnt mention but that  is other story) , but a motor coil is really no different than a generator coil - except there is 1ms point in time where it recieves a pulse - all the rest of the time its a generator coil, induced by those rotor magnets....and the time to short it is at sinewave peaks, and there is one un-used peak sitting down there waiting to be shorted 

it will double the output of your generator coil no problem (will make your cap fill twice as fast in way of "output") and who knows maybe it will cause your beuatiful speed-up effect to be speeding up faster too

I noticed also the sound of the motor changes too, when that negative peak is shorted - sounds more "relaxed" (ha!) as some of the Phfffft sound vanishes - a little similar to when you do pull out the backemf too right after motor coil turn off the mtoor runs quieter as no backspike of flux fighting the rotor magnet...

[kEhYo77]

This my brand new 24 pole rotor 110 mm in diameter with four 5x10x2mm Neos stacked at one pole. The poles are facing outwards.
I used billboard type of sheets (2x3mm) to make it. It is pretty strong an easy to cut.
A small outrunner motor is driving it pretty well. Arduino uC is just for controlling the ECS. I get 1300 Hz at generator coil which is around 6500 RPM.
I don't want to test higher speeds at this stage. It is pretty stable although I 'carved' the holes with just a knife using a printed template.
There are several layers of tape around the edge to make it stronger. There are going to be 20 generator coils around. I can't wait to make
a complete setup for the tests to begin...