Not really - there will be "weak" areas of magnetism between the N and S poles. Small items will likely tend to concentrate around one of the pole areas. Larger items may try to align themselves between two of the poles.Hey sarge, tried to send some photos of the story so far but satelite not playing too well today. Will all the different north and south poles on the same plate not cancel each other out?
You might try using all 12v alternators instead. That would give a much better idea of how they perform in comparison. The 24v alternator may require too much torque for a strimmer to drive.I've got a 28v alternator good for 24A to play with or some 12v 65A ones. I'm gonna make a DC magnet from the 28v one and try to make an AC magnet from the 12v one.
I'm afraid that a single bar would not work well if you attempted to put three phase windings on it. The three phases are 120° apart, and if you tried winding them on a single bar, they would effectively cancel each other out.From the schematics you sent would I be correct in saying I would for a wye join three ends together then simultaneously wrap arround the offending object say a bar at this stage with each of the other ends connected directly to each of the stator windings directly?
How about just trying to make a DC magnet for now? You will need to wrap quite a few turns on a bar.
If you wanted to try a 3-phase version, you might try three bars connected in a triangular shape. It would be easier to wind the turns of wire on before joining them at the ends. A Delta configuration would be somewhat easier to connect up.
Preferably an electrolytic capacitor with at least a 50v rating, as many uF's as you can find! A "rule of thumb" for electrolytic capacitors is to use a voltage rating of at least twice that of what you expect to find in the circuit, in this case you would really want a capacitor rated for 60v - but you'll have to use what you can find. Electrolytic capacitors tend to "leak" more current as you approach their voltage rating. The "leak" is actually a resistive short inside the capacitor. If the leakage current gets too high, the capacitor will overheat, and may rupture or explode. While not generally hazardous, having a piece of equipment blow up like that might be stressful for those already involved in stressful and dangerous work.For the delta configuration it looks like we just have three coils joined in a delta shape with each of these connected directly to the stator windings.
For the 28V alternator I have, what size of capacitor does C1 want to be?
That's perfectly fine. I think it's important for everyone to be involved in what's going on, and thinking about how to make such a dangerous job less hazardous and more rapid.It's all happening very slowly I'm afraid because I want my local staff to be involved.
Regards,
Jamie.
Be safe over there!