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

[Omnibus]

Thanks @Reincarnate,
Unfortunately, the video wasn't of much help. What was it supposed to demonstrate didn't come across at all.


As for this:

If you understand how Thanes device works and have a close look at the Orbo and you see EXACTLY the same thing except a pulse motor and toroids instead of a coaxial coil.

If that's the case then Thane Heins' is quite different from Orbo because the pulse motor as well as the toroids are the most substantial part of Orbo. If I find our what Thane Heins' device really is I may probably revise the above conclusion but thevideo definitely didn't help one bit in understanding its principle of action.

[k4zep]

Would you please post a simple drawing of what you mean by a diode across the coil?

Do you mean a diode right before the coil that blocks the flyback from going back to the positive terminal?

Hi INT,

Schematic below.  Diode across coil L1.  When transistor turns on, Collector goes low and that junction goes to ground.  When transistor turns off, inductive kickback in NORMAL inductor will drive the collector/inductor junction higher than the +12VDC, turn on Diode and induced back EMF will go back into coil.  Used all the time to protect transistor.  This is the short explanation.OKDOKIE......

Ben

[callanan]

Hi All,

I have updated my current Steorn test motor platform with a new switching circuit as attached below. I am still using the same two toroidal coils as in the previous video. The only thing I have changed is the switching circuit which I have designed to send the coil's collapsing emf straight back to the battery. I am still using a small reed switch for triggering because the optimal tuned trigger point is so very delicate and changes as the RPMs go up that I need to find it and move it manually by hand.

I can now get the rotor to approximately 2000 RPM using only 10ma at 12V. Yes I said "ten milliamps"! I do NOT need to use more current to start it at low RPMs! By carefull and precise hand movement of the reed switch I can get it up to 2000 RPM using no more than 10ma at 12V at any time!!!

Regards,

Ossie

[k4zep]

Hi All,

I have updated my current Steorn test motor platform with a new switching circuit as attached below. I am still using the same two toroidal coils as in the previous video. The only thing I have changed is the switching circuit which I have designed to send the coil's collapsing emf straight back to the battery. I am still using a small reed switch for triggering because the optimal tuned trigger point is so very delicate and changes as the RPMs go up that I need to find it and move it manually by hand.

I can now get the rotor to approximately 2000 RPM using only 10ma at 12V. Yes I said "ten milliamps"! I do NOT need to use more current to start it at low RPMs! By carefull and precise hand movement of the reed switch I can get it up to 2000 RPM using no more than 10ma at 12V at any time!!!

Regards,

Ossie

Hi Ossie,

That circuit is so good, it's bad.....MOST excellent.  Get you a good Hall effect in there and stand back!!!!!

Ben

[captainpecan]

All,

I have tried a yellow/white Iron Powder core. The current needed to saturate
the core was so high that my hot glue melted. What kind of core material
is the best to use?

Groundloop.

lol, I know what you mean.  I'm in the same boat.  I used simple ferite toroid I got in a multipack at radioshack.  I ended up with the same results as you.  I'm winding up a steel bushing now to see if the much lower permeability of steel will help or hinder this thing.  I'm beginning to wonder if Steorn made their own cores... Maybe magnetite or something. 1200 rpms out of D cell still seems out of reach with what we know so far, so something is still a mystery.