Muller Dynamo

[David70]

@nul-points,

I know you’ve dealt the capacitor and stored energy issue several times but imho you are wrong because you want so much to believe the setup is real.

My main question is why the DC2DC converter is still powered for >40 long seconds (first OU movie), from switch off time (18m49s) to rotor spin down (19m30s)?!!!

Here is a relevant quote on that, quote taken from one of your former posts:

“snip
at 12V i/p the motor draws 12W

so - at switch-off, with 5.3 Watt-seconds in the cap, and even IF the DC converter could convert it all (which it can't!) then the cap can only supply enough energy to drive the motor for less than HALF a second!”

Excellent post but later on you’ve (unfortunately and mistakenly imho) slightly changed your mind so the main issue is not longer addressed.
Again: if there is not enough energy in the cap to run the motor but for half a second AND the output of the DC converter is still connected to the drive coils AND the motor is on (because nothing else has been disconnected except the generator coils from the input of the DC converter) WHY, WHY is the LED of the DC converter on (and quite bright) for >40 long seconds, like I said before?!!!

Please consider that DC2DC converter is ON LOAD AT ALL TIMES, load is taking about 1A at 12VDC, and time constant for 47mF/15V on that load is hundreds of ms at best so the capacitor shall get discharged and the LED shall exponentially dim in maximum 1-2s…

So, “Houston, we have a problem”.
Apart from the above, you try further on explaining the behavior in terms of OU but it seems to me that the only possible explanation is that, unfortunately, 2 wires leading to a 15V external power supply are hidden in the setup. The switch turns the external power on and off. And the generator coils are (most probably) connected at all times with the 47mF/15V (otherwise the LED would go dark in no time after switch-off). Anything else would not explain all the facts imho.
It wouldn’t be too hard to conceal two wires in both setups (fixed and hung-up). In the second case, the external power source is not 15V but significantly lower, maybe 4-6V. I’m saying that because, to be fair for all the parties involved, one possible explanation for the “LED anomaly” that I’ve got on PM is that the DC2DC converter might have an internal protection that shuts it down in case input voltage falls bellow a certain threshold. I can not agree with that mainly because of the suspended setup. It is clear that generator coils can not possibly generate much voltage at such low RPM and yet the DC2DC converter in on and happy. So, the only possible explanation I’ve got is contradicted by the second movie…

Please refute me but based on facts. I would love too this device be real.

Tinu

what about the recovery diodes, can those send power back to the dc/dc converter?
is the LED at the input or output of the converter? I have a converter like that and the LED is at the the output.

[hartiberlin]

Hi Conrad,
have another Look,
Laurent is already getting a peak amplitude of around 10 to 11 Volts
with his single coil in the one scopescope with the repelling stator magnet.
He is on the right track.
Now if he adds a second coil above and puts these 2 in series he should
have a peak amplitude of about 20 Volts with the same RPM.

[tinu]

Hi Tinu,
you have a valid point here,
But you and we don´t know, how the DC2DC converter behaves.

At the end it was set to 9 Volts output voltage I guess.

So what happens then, when the DC2DC converter gets less input voltage
than 9 Volts ?

I guess it will shut off and will not use any current anymore and the LED might
be still on for a few more seconds due to an internal cap maybe ?

So maybe the rotor is then freewheeling to just run down its inertial
energy and runs this down until the friction has eaten up all RPMs ?

I think, somebody who has the exact type DC2DC converter should
do a test to see, how this converter will behave if the input voltage
is lower than the set output voltage.

Many thanks.

Regards, STefan.

Hi Stefan,

That would be an interesting check; I hope someone will do it in short time and post the outcome.
I have several 56mF caps laying around but surely the question is about that particular model of DC2DC converter, which I don’t have.

Many thanks,
Tinu

[Thaelin]

   Question on the DC-DC converter. It basicly has to keep the operation voltage of the motor coils at set limit. I have seen many types and voltage setings available. Would it not be wise to use one that can handle say 35v input and that way have a buffer for the input side? So what if my coils put out 30v. The one I have now is 2.5 A rated and input of 12. Not sure where the cut off point for input is tho.

thay
       
edit:  OK, says it will take up to 24v input so safe there.

[Nali2001]

Hello all, I don't know if the real stranded wire diameter 'issue' has been cleared up yet. But I happen to still have a spool of the same wire Romero used. Same wire from the same shop. So I measured it:

In reality this "7x 0.125 stranded wire" has a diameter of 0.45mm.

Regards,
Steven