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Physics
Classical Physics
Electromagnetism
A donut electromagnetic core comprises main section + movable section
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[QUOTE="artis, post: 6853714, member: 652341"] Think about it, it's simple, if your rotor to stator flux is all in one direction all around the rotor surface then you can't pass wire back and forth, you can only pass wire in one direction and current also in one direction. If you put two wires next to each other and pass current in opposite direction then one wire will try to turn left while the other right, you will have a perfectly canceling torque and no movement. Therefore for a design like this you can only pass current in one direction and then use a return path for the current that is OUTSIDE!!! of the flux that you are working with. So yes you need two slip rings for each loop/turn of such a motor. It does work in theory and would also work in practice it's just extremely inefficient to do a motor this way. It has too long magnetic field path and needs alot of slip rings , or the other way is to do it like the faraday disc is done instead of many turns, have just a single turn but then you need huge amperage to get any real torque. I'm talking kilo amps! Sorry buddy, but this idea doesn't fly. [/QUOTE]
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Forums
Physics
Classical Physics
Electromagnetism
A donut electromagnetic core comprises main section + movable section
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