Muller Dynamo

bolt · June 25, 2011, 08:16:26 PM

Quote from: e2matrix on June 25, 2011, 07:59:47 PM
Yes I was seeing the same thing however the resolution for such tiny wires makes it difficult to be certain exactly what is there IMO. At this point though I'm convinced it will be worth trying bifilar. And that makes me wonder if it was indeed Orbo people that paid Romerouk a visit.

I think my monitor setup is probably not as sharp as some have too.

well you know its tough if they think they own this technology using bifilar coils. This is prior art in about 500 EXPIRED patents so it means its public domain. In any case if its true how come we haven't seen any of their crap looped?

bolt · June 25, 2011, 08:33:21 PM

Quote from: maw2432 on June 25, 2011, 08:14:23 PM
Bolt, thanks!
I thought the same thing as you did about some cores looking to have only three wires...
Do you think there was a possible mistake (or on purpose) made by Romero in shorting the coils at this point in construction? The wires are all same color and easy to mix-up thus not resulting in a true bifilar arrangement. I guess best way to check the wires is with a meter for continuity?
Also, what do you think about bifilar connections with the other top/bottem coil?

Bill
Bill

No mistake i think if you make a bifilar coil you wind it up till the end then get a meter to BEEP the ends to find out which pair you have then before you lose the crossover of the pairs you take the two you need and twist them now ready for soldering. Now what happens in the opposite coils? I dunno perhaps one coil is wound clockwise the other anti clockwise, maybe they are the same throughout just to make sure that the self inductance is cancelled out. This coil make a LOT of volts. This is why a joule thief can step up 1.5v to 90v more just using bifilar coils yet the ratio does not use transformer turn rules.

maw2432 · June 25, 2011, 08:46:33 PM

Quote from: bolt on June 25, 2011, 08:16:26 PM
well you know its tough if they think they own this technology using bifilar coils. This is prior art in about 500 EXPIRED patents so it means its public domain. In any case if its true how come we haven't seen any of their crap looped?

Very well said about the orbo group!

maw2432 · June 25, 2011, 09:17:46 PM

One cool bifilar coil that I have had for over 5 years now can be obtained from one of those Kinetic Art sculptures. See this coil below.
I have had this same coil driving my pulse motor and it only use about 18 to 24 ma at 9V.
It has a hall sensor wired in. Only need 9v battery and that is it.

Bill

e2matrix · June 25, 2011, 09:37:29 PM

Quote from: bolt on June 25, 2011, 08:16:26 PM
well you know its tough if they think they own this technology using bifilar coils. This is prior art in about 500 EXPIRED patents so it means its public domain. In any case if its true how come we haven't seen any of their crap looped?

Warning: non important info - skip if you only want relative build info.

Oh I agree and it's more about the impression I have about them and the way they do business. At first I was impressed with what they were putting out there but now I think they are just trying to make big bucks anyway the can and don't want any competition. Some one else mentioned a ways back in the thread that Orbo might be the culprit. Just speculation but now that I think about it I think Stefan said in a phone call with R that it was some American company. That would seem to leave out Orbo.