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Author Topic: Muller Dynamo  (Read 4321956 times)

toranarod

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Re: Muller Dynamo
« Reply #480 on: May 09, 2011, 11:35:13 AM »
I am trying to get a team together to replicate this . One problem with replication can be , do you try to exactly copy  the working example or do you use materials to hand to save money . I plan to compromise by building a good shaft and rotor and then experimenting with the other bits .
           Here is an important question . What is the orientation of the magnets on top of the coils? If we assume that all rotor magnets are north pole up , are the magnets on top of the coils north pole up or south pole up . Also I need to learn more about Hall effect switches .Obviously , the motor drive coil needs to be energised as a magnet approaches it , and switched off as the magnet comes to its closest point to the coil . I am not quite clear at the moment what causes it to switch off at this point .

I am doing both
for speed and diversity i am building with what i have in stock. and I almost have all the materials anyway. left for dozens of other projects.
will also replicate to the exact specification, thats a longer term project it will take a week or so to get stuff made and shipped in.
 

toranarod

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Re: Muller Dynamo
« Reply #481 on: May 09, 2011, 12:26:49 PM »
just trying to get an idea of the wire required to wind the coils. this is based on 7 strands of .2  so .125 will be inside this figure.

romerouk

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Re: Muller Dynamo
« Reply #482 on: May 09, 2011, 12:38:41 PM »
Hi all,

I see there are questions about the rotor being smaller that the magnets lenght.
I am not at home now to recheck but I know for sure that the rotor was made from 4  0.3mm discs.
During the initial building and testings I have changed the rotor, changed the magnets,... It might be a 1cm + 0.5mm magnets togheter, I remember having that on the rotor at one point, but I am not sure, I must check later.
I had to use the heat gun to take the magnets off, initially I dan them in NSNS configuration.
I had measured the inductance and it is 1.203mH plus and minus, not all coils are exact value but with the magnets on the rotor being close to them that might not be exact.

alan

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Re: Muller Dynamo
« Reply #483 on: May 09, 2011, 12:40:18 PM »
What's the secret? The even/odd arrangement?
Is it really necessary to use litz wire?

sigis

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Re: Muller Dynamo
« Reply #484 on: May 09, 2011, 12:51:12 PM »
Hi all,

I see there are questions about the rotor being smaller that the magnets lenght.
I am not at home now to recheck but I know for sure that the rotor was made from 4  0.3mm discs.
During the initial building and testings I have changed the rotor, changed the magnets,... It might be a 1cm + 0.5mm magnets togheter, I remember having that on the rotor at one point, but I am not sure, I must check later.
I had to use the heat gun to take the magnets off, initially I dan them in NSNS configuration.
I had measured the inductance and it is 1.203mH plus and minus, not all coils are exact value but with the magnets on the rotor being close to them that might not be exact.
Thank you RomeoUK,
I will wait for answer. Just be careful do not destroy working unit.
May I ask make oscillograms from motor coils to, also from couple of generator coils, and to measure amplitude and period of pulses. 

romerouk

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Re: Muller Dynamo
« Reply #485 on: May 09, 2011, 12:51:17 PM »
just trying to get an idea of the wire required to wind the coils. this is based on 7 strands of .2  so .125 will be inside this figure.
the winding space is only 1cm. the core left goes thru a hole into the top and bottom supports but not touching the magnets.

I got almost 400 emails since yesterday, ...oh my god, what should I do?

toranarod

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Re: Muller Dynamo
« Reply #486 on: May 09, 2011, 12:53:46 PM »
Hi all,

I see there are questions about the rotor being smaller that the magnets lenght.
I am not at home now to recheck but I know for sure that the rotor was made from 4  0.3mm discs.
During the initial building and testings I have changed the rotor, changed the magnets,... It might be a 1cm + 0.5mm magnets togheter, I remember having that on the rotor at one point, but I am not sure, I must check later.
I had to use the heat gun to take the magnets off, initially I dan them in NSNS configuration.
I had measured the inductance and it is 1.203mH plus and minus, not all coils are exact value but with the magnets on the rotor being close to them that might not be exact.

Thank you for you time The Henrie's can be a good guide in coil design.
working on coils all day so i have a good starting point now. If you are still there what sort of former did you use on ether end of the ferrite rod to hold the wire in place and is it still stuck on the end of the coil looks like a plastic washer. or is it?
one of the biggest problems I have always had is find a good bobbin to winding the wire around.     

sigis

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Re: Muller Dynamo
« Reply #487 on: May 09, 2011, 12:54:45 PM »
just trying to get an idea of the wire required to wind the coils. this is based on 7 strands of .2  so .125 will be inside this figure.
Hello,
From photos looks, that high of that coil is about 10mm. It looks that not enough space to place 300 windings?

yssuraxu_697

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Re: Muller Dynamo
« Reply #488 on: May 09, 2011, 12:57:47 PM »
I got almost 400 emails since yesterday, ...oh my god, what should I do?

Do like I do at my workplace, when there are more than 100 unread e-mails just mark them "read" and continue with business as usual :) Usually ones life does not get worse when doing that :D

toranarod

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Re: Muller Dynamo
« Reply #489 on: May 09, 2011, 12:59:20 PM »
Hello,
From photos looks, that high of that coil is about 10mm. It looks that not enough space to place 300 windings?

Thats what I thought, but i think it fits now i have done some calculations. 

Overunityguide

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Re: Muller Dynamo
« Reply #490 on: May 09, 2011, 01:06:02 PM »
Hi romerouk great work on this Muller motor generator setup.

Is it possible to show some extra video footage where you switch the dc to dc converter gradually from 12V back to 4.5V and hereby showing the input voltage for the dc to dc converter (rectified output of the generator) for each single step?
I already know that you showed earlier that for the 12.05V out of the dc to dc converter the input was about 15 volts

Good luck to all replicators and with Kind Regards JdR.

romerouk

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Re: Muller Dynamo
« Reply #491 on: May 09, 2011, 01:06:18 PM »
Hello,
From photos looks, that high of that coil is about 10mm. It looks that not enough space to place 300 windings?
As you can see in the pictures  the windings are beyond the  coil size, I should have used bigger coils but I didn't have, finding coils bobbins is a pain.The coils bobbins are one of the weakest points in my design, now I will have them custom made but I need to get the system togheter do some testings, trying different dimensions for the coils, must try  Iron Powder cores then I will decide to the right dimensions.I am thinking to 4 cm/2cm not sure yet for the core size, still testing.
Maybe people who knows a good source should place a link for all others to know.

alan

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Re: Muller Dynamo
« Reply #492 on: May 09, 2011, 01:11:14 PM »
You could try to put a 12V DC to 110/220V AC convertor on the coils to form a usable signal and see how much it can draw.

neptune

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Re: Muller Dynamo
« Reply #493 on: May 09, 2011, 01:14:01 PM »
@Alan . It is too early to ask what is the secret , until there are several replications . The use of multistrand wire seems to give a 2 volt increase in out put .Replicate first and then experiment .

Cherryman

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Re: Muller Dynamo
« Reply #494 on: May 09, 2011, 01:14:10 PM »
@RomeroUK

I can only imagine your world is getting a little upside down.

I suspect while the word is going around like fire, your e-mail box will get even more full.

I suggest you make a choice of your own.

I can not think for you, but if you have the intention to not sell, and keep the open source replications and improvements here on the forum, i suggest you use an email filter to filter out all post related to your device to a separate folder, and indeed just ignore them, erase them, or take a beer and have a good LAUGH! 


Do not forget to keep smiling, and work in your own pace, style and comfort. If you can manage that, and keep us around here a little informed and guided, you better simply ignore and not read the e-mail, because they will confuse, irritate or tempt you one way ore the other.

When you need some help, don't hesitate to ask around in the forum, i'm sure people around here are willing and capable of help.
I for one could, if you are interested,  i could make a total 3d drawing replication of your device, just let me know.

Good luck, trust your instincts, and keep those magnets spinning!