Muller Dynamo

[Rawbush]

Hi rawbush,
could you tell me please where I could get magnetite powder ?  I have searched the web without results.
Thanks

Altair

The magnetite I have was sent to me from a group on youtube (ummc.org). I have sent some to another guy to play with and would be more then happy to mail you some to try ( $5 for postage).

So I was not able to get the magnetite rotor to even run as a motor ( very weak attraction). I did spin by hand and had gen coil hooked to scope and didn't see any movement, I tried stacking up to 3 magnets on each side of the coils. I am sure it could work as a motor with some changes to the coils ( bigger core center hole), but for now I have reinstalled the neo rotor.
Peace
rawbush

[Tudi]

..without load, the input current is 0.94 A and the battery voltage is measured  at 12.59 V. When the load is connected, the current consumption decreases to 0.92 A and the battery voltage drops to12.28 V. The voltage drop under load is 0.3V and the current change is 0.02A. ..

these cheap measuring devices have an avg 5% error. at 15 V that is 0.75V. it is enough to have a spike and after recalibration you might get this difference.

About Kromrey type RomeroUK scope shots. Remember when someone sugested that maybe romero is not using coil shorting but has it's coils shorted all the time ? Maaaaaybe, he has this NULL out setup all the time and from time to time he UNshorts the coils at a specific point and get a PEAK inpulse of output ? Maybe this inpulse due to some reasons does not bother the rotor ? Maybe since you already have the speedup under load effect this shorting instead of slowing down the motor will speed it up ?

[mariuscivic]

nul-points

First i want to thank you for helping me. 

I took another shot with the output shorted by the same 10 ohm 5W + an large cap 22 000uF.

The signal has changed becouse i've changed the wires that goes to the sound card.

My coils 20mm high, 10 mm ferite and 600 turns. For each coil i get around 6,5V -6,8V witch gives me a total of 13,5V-14.0V for each pair with no load and maximum speed

The coils are hand made by me and the first layer of winding sits directly on the ferite bar. I know that the coils are not perfectly but seems to be working.

[yfree]

@Tudi,

I am talking only about relative numbers we see in the video, nothing else. I am just discussing this, and I believe in OU.
Coil shorting, speed-up, resonance this is what is being discovered now.
Best wishes,

yfree

[yfree]

@Hoppy,

You guessed it. Definitely not from the numbers we see in the video.

Regards,

yfree