Muller Dynamo

[hoptoad]

   Open circuit coil acts as a load appereantly. However dead shorted circuit coil acts more like magnetic flux capacitor (or mechanical spring) and has little losses  and unloads prime mover so one can see acceleration.  Now in your video you might tend to think that shorted coil provides acceleration. This is just illusion. Its easy to figure this out by measureing rpm with shorted coil and then measuring rpm with coil removed all together. Removal of the coil will provided greater acceleration or increase in rpm then the one shorted. So no free lunch there. And why would open circuit coil act as a much greater load than shorted I am not sure (oversaturates?). All this I have observed with my thane heins replication. As far as I am concerned his theories were wrong. Just my opinion.

Minde

Well spoken, yes, remove the coil and establish a base line first. Then the acceleration illusion becomes readily apparent.

My opinion too!

Ron

Agreed ... KneeDeep

Cheers

[Pirate88179]

@plengo:

I do agree with this. One of the advantages to leaving the pages fully intact is that when someone says "Where in this thread did someone say...," then it is easy for me or EM2 to do a quick text search of the pages and direct people.

I did a test of this yesterday, and with the missing posts, it becomes much less effective.

I also agree that it's nice to get rid of the junk. Maybe, Fausto, if you could agree not to go back more than 10 pages from the current one, we could save up to the the most recent 10 pages and know they will remain constant?

Thoughts?

Mark.

As Moderator on the JT topic as well as a few others, I found the best thing to preserve posting numbers is to use the "Modify" option and remove the offending post and in its place type something like "***Post Removed by the Moderator***".

This should solve the problem.

Bill

[ElectronManipulator]

I think that somewhat misses the point. I wasn't referring so much to actual COP as much as maximum theoretical COP for the design in question. Achieving 0.99999 out of a possible 1.0 is interesting, but not terribly useful. I have yet to see anything in my lab that demonstrated a potential greater than 1.0, although I have seen many at 0.95 or better.

Which is not to say that I disagree with your points...I don't...I noticed the monster bridge too, which is clearly ill-advised for both switch rate and power dissipation. I do think it is somewhat academic though until anomalous power has been demonstrated. Using a micro-controller to control both the drive coils and the generator coils makes great sense, but it is not the easiest thing for most experimenters. My company designs and manufactures industrial controls...we would be all over automating the controls for this...but not until I can demonstrate more out than in.

I agree fully with the COP point.

About the uC point, I do not.

Even if your control signals are external, (ie external triggering) that is irrelevant to theory.

For fine tuning your timing and creating a device, you should use prototyping tools.  Use a PC as a function generator, ect.

That way you can adjust your timing on the fly, and use complicated algorithms.  Once you find the trigger points, you may no longer need them.   You can revert to properly placed optical or hall sensors and logic circuits.

BUT, with 3.3v tens of uA microcontrollers that can run months off of a coin cell, the use is trivial.

As for prototyping, they should be used.

Microcontrollers are cheap.  There is no need for the projects I have seen to have to use more than a 10f20x PIC. 4MHz is fine for all of this work. 10bit ADC and a built-in capacitive touch option which can be used in place or with a HALL effect sensor.

I know it is out of grasp of many builders, but there is no reason people should not work together.  If you can wire up a 555 circuit, then you can wire up a PIC that a friend sends you.

I am willing to offer code help.

Im sure if you were to use a "send me a new chip, and I will send you a programed chip" type program, designs could happen much faster.

Also, for all of the folks who do not have o'scopes there are PC based soundcard scopes that will work fine at these speeds.

They are free.

You can get a USB based sound card from Deal Extreme for $2.20, so you need not worry about overloading your soundcard.

EVERYONE building should have a dozen of them on-hand.

http://www.dealextreme.com/p/virtual-5-1-surround-usb-2-0-external-sound-card-22472

[hartiberlin]

Thanks very much Konehead

for all your info and very apreciated knowledge transfer very helpfull

Hi Clanzer

do not worry for those probably too much sensitive post from people who have not taken the time to  simply study your magnifique design. But there is a lot like this  in this forum and   sometimes it is disturbing to say the less.

c

OK for today

I am probably beginning a very serious hard job here,

So as i sayd, i wound my 18 coils with 0.3 mm plain copper wire. So i got about 450 turns per coils with an average DC resistance of 5.5 ohms.

So for the new commer , i have 7 sets of 2 coils wounded in serie (that is to say about 11 ohms DC resistance per set ), for generation of  the output power.

Those  7 sets are powered by 2 sets of coils ,wounded in serie and powered by the ROMERO's circuit as described in the Stephan PDF.

The trigger magnet are positionned near the center of the rotor, (not at the periphery ) see pix

I tried 3 different size of stator magnets in attracting and repelling position ( as per rotor magnet)  All cores  on both (upper and bottom stator) were covered by those biasing magnets

The best result , concerning  the stator magnets above the generative coils, is for me and my setup without any doubt  , in REPELLING position to the rotor magnet is far the best , I know i am very surprised by this result but as i sayd , this machine has to be understood as a whole  and not as an addition of separated parts. My 2 cents.

The powering cores and coils are not biased at all by stator magnet,


I could get from  no stator magnet up to the best config ( 20 mm diameter  by 10 mm thikness disc N42 magnet) SO FAR , from 15 volt  to 27 volts.(open circuit)

This means that the Stator magnets are really important.

In the pix annexed, you see that i could get 27 volts with an input  of around 12 volts for about 118 ma.

But no chance to loop at the present.

Another thing , i measured the DC / DC converter and at 12 volt input and set to 12 volts output,it draws 52 ma.  = 0.6 watt ouch !!


So first result

input    11.7 volts at 117 ma   produce   on a single set of coil arrounf 24 volts at `(open circuit )

input    11.7 volts at 117 ma produce, on all parrallel connected 7 sets of coils ,arround 26 volts at 1225 RPM ( open circuit )


A lot of work is remaining for me to get what Romero got.

good luck at all

laurent

To all the builders,
well done !

Especially to Laurent:

Can you please try to put a 1.5 Ohm resistor across your 25 Volts capacitor
and measure then the voltage at your 1225 RPM  at the capacitor and load resistor ?

It seems that you have about 11 Ohm /7 = 1.5 Ohms DC resistance of ALL your coils in parallel,
is this right ?

Then please also try a few more resistors as a load like 10, 50 and 100  ohms and let us
please know the DC voltage at it at the same RPM.

This will let us be able to calculate the available output power.

Many thanks in advance.

Regards, Stefan.

[hartiberlin]

To Lidmotor:

Great Progress Lidmotor !

Well, dont let you bug down from the other comments.

You will get there also with your small CD parts.

Just keep working on it and optimize it.

With your small size you really need to minimize your losses,

as when you build it small, every 0.8 Volts losses or so on the diodes counts...

Lets see, what will come up, when you have all your coils connected.

Many thanks for your hard work.

Regards, Stefan.