Muller Dynamo

[romerouk]

hi Romero

thanks for the driver coil shematic ( i use it since some times on my shorting coil experiment and it works great,, thanks )

So everything seems very easy to replicate. And so far, you do not use  "shorting"  on the generative coils. Only paralelling those coils, rectified  to the load-

So the main effect seems to come from the odd / even coil to magnet arrangement coupled with your addition of external magnet.

woww so simple genius

bravo

Will begin the replication ASAP

good luck at all

Laurent

before spending lots of money and time try to replicate my old example from the folowing link
http://www.youtube.com/watch?v=9lYTr16vdOM
Use any number of magnets but make sure that at anyone time you have a magnet in position to compensate the drag created by the coil.
use a motor to drive the rotor and make sure you start testing with a load connected then adjust the magnet up and down to eliminate the drag as much is possible and get best output. More easier than this is not possible and I have posted that info long time back.
Please keep me updated with your progress.

[SkyWatcher123]

Hi folks, Hi romerouk, thanks for all the additional information. A couple years ago, I built just about the exact setup, minus the permanent magnets in stator and used repulsion, not attraction.
Though I used dual magnet rotors sandwiching a stator plate with steel washers as cores, in odd/even arrangement.

And just like your setup, I only used 1 drive coil, then 2 drive coils, though when just using the 1 drive coil, it took off like a rocket as if all the other coil/cores were not there.
If it were not an odd/even setup, my rotors would never have accelerated in that manner and would have had low rpm.
So since you're using the permanent magnets to cancel the attraction effect of the core, so you can use attraction mode of your coil, you don't need to use repulsion.
In a way, it's somewhat similar to the kawai motor, in that when pulsed to attract, you're attracting a powerful neo magnet and not needing any input to negate any drag back to ferromagnetic core issues.
Though I wonder if the odd/even geometry is even needed when using the permanent magnets to cancel ferro core attraction, though it probably helps.
peace love light
 

[nul-points]

[...]
Only 2 coils (pairs) are driving.
All other coils are connected to bridge rectifiers, each set of coils goes to a rectifier then all are connected in parallel
[...]
RomeroUK

hi Romero

excellent build - thanks for sharing!

apologies, another couple questions:

- what is approx weight of rotor (without mags) - or what material/object did you use?

- is there any waveform factoring or smoothing involved in the output measurements as shown in video?
  eg. Capacitor smoothing of combined parallel FWBR o/ps, or using 'moving-iron' type Volt & Amp meters?


someone suggested charging 2nd battery pack with o/p & swapping with i/p to see if operation continues longterm (sorry, can't see who whilst posting this reply - maybe Gustav?)

...just a thought - from my experiments with charging NiMHs, NiCds etc, that process is only around 50% efficient, so you'd need a bigger margin than just COP=2 to be sure of achieving sufficient i/p back from charged batteries (don't know about charging efficiency of LBAs tho')

...could this margin also apply to an attempt to loop back the existing o/p to the i/p battery (ie. would you need to supply more than**  2x the existing battery draw to keep it recharged?  i don't know)

(** 'more than' because the DC/DC conv. also has 10-20% losses)

anyway, hope the feedback development goes smoothly, whatever method you go for

thanks
np


http://docsfreelunch.blogspot.com

[romerouk]

@nul-points
Hi,
I am not sure exactly about the weight but is about 2kg with the magnets on.
The rotor is made of Acrilyc 1.2cm thick. No smoothing in the video shown but yesterday I have added a capacitor to the load and I've got better results.
I had it running for days without loosing the charge.I have even started from 8volts in the battery and that charged and was running ok.No need to change batteries, I will try to have it running without battery just capacitors, today I will have the answer... I must get that dc/dc converter first.Even looping back I should still be able to lit a 5w bulb at the same time.

[nul-points]

thanks for the info, Romero

sounds good about the smoothing cap - what capacity did you use & what did the Vout & Iout change to?

i guess with a little more windings on the gen coils that it would be possible to generate sufficient o/p voltage headroom to use for charging the i/p battery directly, without conversion (apart from rectification, of course)


a technique that i'm finding useful (with a different experiment) is to supply a load circuit direct from a battery as usual - then connect the feedback o/p buffer capacitor to the battery via an inductor which is large enough to block switching transients between cap & battery

the cap would be ok to receive any transients from the o/p and it can develop a slight voltage increase above the battery voltage to keep a constant 'trickle' charge into the battery thro' the inductor

thanks
np


http://docsfreelunch.blogspot.com


[Edited to clarify feedback of o/p]