Replicated
I replicated this device successfully YouTube - MVI 7121
I got it to run at 12 volts (just what I had around, no AA case) and my clamp on ammeter zeroed showed about .04 amps draw and .02 amp charge. Charging the battery was a voltage of 13.05 and my resistance was around 600, but I found you can increase resistance (up to atleast 10k) once the magnet has gotten stable, and that seems to smooth things out even more, but a noted slowdown is heard. Decreasing the resistance makes the pulses too strong and usually bumps it around too violently. I greased that plastic dish with olive oil.
The 2 capacitors on the side of the choke coil had no size specified so I used flash caps from cameras. One capacitor charged up to higher then 90 volts and the other one was at 12 when I checked it.
Thinking out loud...
If the middle of these magnets could be scored and made rough, you might be able to start the rotation by drawing some sort of bow string past it, or have a device that holds the magnet by the middle with some string, and when a button is pressed the string gets pulled real fast and drops the magnet... It seems that when the "Hematite zip stone" stands up, its due to an imbalance that gets amplified to the point where it goes to flip over, and thats when it falls into the magnetic groove.
Imagine a big salad bowl. If you were to wrap magnetic wire in a spiral all over the surface of this bowl, starting in the middle and working to the outside, do you think that would be the best way to capture this magnets spin? Or would smaller rings be better pickups? or possibly just more tri-filar goodness...
Anyway, just popping in to say I did it too! :-)
I replicated this device successfully YouTube - MVI 7121
I got it to run at 12 volts (just what I had around, no AA case) and my clamp on ammeter zeroed showed about .04 amps draw and .02 amp charge. Charging the battery was a voltage of 13.05 and my resistance was around 600, but I found you can increase resistance (up to atleast 10k) once the magnet has gotten stable, and that seems to smooth things out even more, but a noted slowdown is heard. Decreasing the resistance makes the pulses too strong and usually bumps it around too violently. I greased that plastic dish with olive oil.
The 2 capacitors on the side of the choke coil had no size specified so I used flash caps from cameras. One capacitor charged up to higher then 90 volts and the other one was at 12 when I checked it.
Thinking out loud...
If the middle of these magnets could be scored and made rough, you might be able to start the rotation by drawing some sort of bow string past it, or have a device that holds the magnet by the middle with some string, and when a button is pressed the string gets pulled real fast and drops the magnet... It seems that when the "Hematite zip stone" stands up, its due to an imbalance that gets amplified to the point where it goes to flip over, and thats when it falls into the magnetic groove.
Imagine a big salad bowl. If you were to wrap magnetic wire in a spiral all over the surface of this bowl, starting in the middle and working to the outside, do you think that would be the best way to capture this magnets spin? Or would smaller rings be better pickups? or possibly just more tri-filar goodness...
Anyway, just popping in to say I did it too! :-)
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