Recent content by AniV

I have been trying to build a small Van de Graaff generator based on the designs found here: http://rimstar.org/equip/build_make_van_de_graaff.htm Unfortunately I haven't been having much luck. How can I improve it...

When a supercooled type two superconductor is subjected to a static magnetic field, the superconductor pins to the flux of the field (the mixed-state meissner effect is apparent). What happens if it is subjected to a continuously changing magnetic field, assuming the superconductivity takes...

I have noticed there are a few designs for permanent magnet brushed DC motor, but I can't seem to find the benefits and downsides of either one. The first one (first attachment) uses three electromagnets placed on a triangular rotor. There are two arc permanent magnets on the outside. In this...

I presume the voltage is around 24v while current js around 12A. What I am confused about, is how the wires shown in the video don't overheat, or short circuit the battery. In order for the battery not to short, the the wire resistance must equal the calculated resistance for the circuits, but...

I have been reading up on electric bike motors, there are a few things regarding size and wire gauge that have me confused. I have seen disassembly videos of around 300 watt electric bike motors with planetary gears, and I can't see how anyone can push through 300 watts through the wires without...

Interesting, do you have any specific examples?

None, more like a hypothetical

How large would a superconducting magnetic energy storage device be if it were to safely carry 100 kilowatt-hours of energy? How much cryogen (liquid nitrogen) would it consume per hour if the device were made from high-temperature superconducting materials (YBCO or similar).

Thanks. This looks interesting.

Thank you. As I said, I was hoping to replicate the same repulsive force I found between the two neodymium magnets. I suppose it seemed simpler at the time. I suppose now the problem would be to figure out the parameters for solenoid.

Well... I 3D modeled and printed a working (and pretty sturdy) piston-crankshaft contraption. I fitted it with a cylindrical neodymium magnet, and was wondering if there was any way to use an electromagnet to "power" it. There are a few ways of doing it, one is simply placing an electromagnet at...

It will not be continuously running. I only need it to "pulse" a few times a second (anywhere from 2-5 times a second).

Half a Tesla? There is another thread here where someone tried to reach 1T. I don't believe they mentioned the requirement for such a high current. If half a Tesla is unfeasible, what do you believe to be the maximum I can reach given I don't have professional equipment? Thanks

Thanks for your reply. Would you mind explaining why? I suppose I may be able to use anything from .5 Tesla.

I am trying to create a solenoid with a high flux density, but I need the specifications (wire gauge, current applied, etc). The diameter of the core would be preferable around 15mm. The length can be pretty much anything reasonable. I need this for a project that requires a strong repulsive...