STEORN DEMO LIVE & STREAM in Dublin, December 15th, 10 AM

[PaulLowrance]

With my current configuration I can achieve a consistent 750RPM for only 239mW of input power!

Please see the following video for further details and the circuit & waveform across the coils is attached below.


http://www.youtube.com/watch?v=sdSci8CKD74

Very nice! Now you need yet another current meter.     According to your scope it looks more like 770 rpm.  When I get my eOrbo running it would probably start flying away like a propeller at 770 rpm, lol.

[PaulLowrance]

All this talk and suppositions will fade away if we can get hold of Sean's December 19th data and observe that indeed, as claimed, all the input power has gone exclusively for Ohmic heating. Finding out whether or not that's the case should be the only focus of attention. Talking about anything else is just a waste of time at this point.

Promptly obtaining and analyzing Sean's data is especially important for those who've set themselves to replicate Orbo because it will save them time and resources if it turns out that the data doesn't support the claim that all the input power goes solely for Ohmic heating. We've gone through a lot of this -- to take somebody's word and only because of that start efforts to replicate the claim -- to find ourselves look like fools pulled into a hoax. Here in this case the resolution is straightforward -- if Sean has these claims he should provide the data, clearly available, to back them up. No more Mylows.

I agree, but IMO the eOrbo will be extremely difficult to get it just right. IMO it's due to magnetic viscosity, which is what Steorn has made very clear. It's not a matter of just saturating a core, and presto, cop>1. I know what I measured, which was the magnetic material cooling nearly 3°F, but it seems to be very difficult to get the material back in that state. Maybe Steorn is still having problems with that; e.g., swapping the eOrbo.

[k4zep]

Thanks Bruce that answers my question (reply 954)
do you have the same energy saving with one rotor if there were two lines of magnets,
here is your original design with my badly edited one underneath
cat

VERY THOUGHTFUL, Now you are starting to see the problems and the solution!  This is fun watching people really think!!!!!

Ben

[Groundloop]

@samedsoft,

Back electromagnetic force is what happen in any coil when you add current to a coil.
The coil try to resist the current change. An inductive kick back voltage is what you
get from a coil when you switch off the current in a coil. Don't mix those two.

As to you questions, I'm not quite sure what you are asking?

The circuit posted is to show people how to make a "Transfer Resistor" eg. transistor
for AC voltages or pulsed DC.  When you short the middle winding then the power
is free to flow from input to output. If you short the middle coil gradually by a variable
resistance of some sort, then you can adjust the output from null and up to half the input
level (minus transformer losses). And, yes, I have tested that this works.

Alex.

[mondrasek]

If your magnet doesn't release increase the amperage or increase the distance of the magnet from the core.

The lack of a regulated power supply makes a build more challenging (this is my situation).  You need to design the coils for the voltage you intend to use.  And if you want to maximize the output torque, you need to consider what magnets you have/want to use as well.  That is the reason for the questions about the best ferrite core material for a given magnet set up.  But I had not considered that you could adjust the core to rotor magnet gap just to get any setup to run (pretty much), even if not able to saturate.  Thanks to all for that and all the rest of the info.  Any more is also appreciated.