Muller Dynamo

[Tudi]

been reading this document for a while http://www.ostfalia.de/export/sites/default/de/pws/turtur/DownloadVerzeichnis/Series-english-5Articles.pdf
If he is right in there, then timing and finer details are very important. Even if 10 people replicate romerouk device, there is a chance that none will obtain same result. Maybe by accident romerouk did manage to make an OU device. How hard will it be to replicate the effect is a good question.

[nul-points]

[...]
Do you have any idea what the real RPM's of his rotor was?  The 1000 or so RPM tossed around sounds very low to my "Musical" ear and
experience in listing to those pulse motors hammer along.  The fact that I can hear absolutely no rpm change with load is a puzzle and
can only be attributed to excellent balance of a loaded generator with perfect cancellation.
[...]
Ben K4ZEP

Ben

my spectral analysis of audio from Romero's self-run video gave the base peak freq. at 190Hz approx

for a single item revolving this freq represents around 11000rpm - too fast for a stable acrylic rotor with mags

so that freq probably represents either the mags or, say, nearest core/mag events

if core/mag then rpm =~ 11000/9 =~ 1220rpm

if just mag noise (as they passed) -~11000/8 =~ 1380rpm

the pitch probably didn't change load/off-load because of the DC converter adjusting in response - the device would have had enough overhead to accommodate an extra load of approx 20W from Romero's report

hth
np


http://docsfreelunch.blogspot.com

[ZeroFossilFuel]

A word of reason and conviviality in the midst is refreshing.  Thank you for your insight into the overall time line of Romero's creative
inner self.  My device will be as close to his as I can make it.  It is not something that I can not do fast with my limited workspace but it
will happen. 

Do you have any idea what the real RPM's of his rotor was?  The 1000 or so RPM tossed around sounds very low to my "Musical" ear and
experience in listing to those pulse motors hammer along.  The fact that I can hear absolutely no rpm change with load is a puzzle and
can only be attributed to excellent balance of a loaded generator with perfect cancellation.

Again, thanks for the excellent post.

Ben K4ZEP

With 7 electromagnets acting as generator coils, there are 112 pulses per revolution of the rotor (8 magnets x 7 pickup coils x 2 for the FWB rectification). There are two drive coils creating a total of 16 drive pulses per rev.  Dividing the audible frequency by 16 should give you RPS, x60 for RPM.

[caccr2000]

bueno sigo con la inquietud en las fotos del half sensor y en el comienzo del video cuando arranca se ve que el rotor no gira de una como si revotara de una lado a otro dando a entender que dos bobinas estan en repulsion y las otras dos estan en atraccion

[woopy]

Hi all replicators

i did not received the litze today but i did some experiments with my setup

1- i installed all the ferrite core (without the coil) in theyre place on the stator and the magnet in the rotor.

2- i tried to spin the rotor with the center motor but with only 1 stator to see the anticogging = very low cogging but tremendous vibration, due to the assymetry of attraction between one stator and the rotor.

3 - i installed the upper stator and super smooth rotation , no more vibration  . I speed up the rotor to 1280 RPM  really smooth.

4- i installed my small coil which is 450 turns of plain 0.3 mm wire , on one core.

  some datas :  the coil naked (without core ) is 5.6 Ohm DC resistance and 2.04 mH inductance
  once installed on the core in the stator  the inductance is 5.5 mH when the coil is between 2 rotor magnet and the inductance fall to about 2 mH when at TDC    with a rotor magnet. If i add a stator neo mag at the end of the ferrite core the inductance lowers a bit.

5- I speed up the rotor to 1280 rpm , the power is 2.7 volt at 180 mA  = 0.486 Watt (  for info,the motor is rated at 12 volt so at only 2.7 volt it works at a very low efficiency)

6- take some scope shot with different stator position and see the result in the pix.

No doubt at 1280 rpm the small coil can reach 10 voltpeak with the small neo in a repelling position.

Hope this helps

good luck at all

Laurent