Recent content by Chris Fuccillo

Ok pls what is the solution

your correct this is a "real life" question this will be a coming experiment . In a sense how do I calculate the extra current to overpower the persistent magnetic bias field. I guess my question boils down to when calculating the current required for the H(A/m) field to cause B = u * H to be...

I can easily calculate the core and currents required for the coil and core, i get confused do the the external field, any help please.

General Information: A coil that is wound on a magnetic core is placed in between two permanent magnets as depicted below. The coil is fixed and the magnets are affixed to a shaft and can rotate freely. Assume that there is 0 friction for the purpose of the following questions Note: arrows on...

Thank you. That is a good example for an axial magnatised ring magnet. It may calculate the same but that is why I was looking for a diametrically magnatized example

Could anyone point me to the proper formula to calculate the magnetic field strength in the gap/hole(ID) of a diametrically magnatized ring magnet. https://www.skycraftsurplus.com/rp9291magnetdonut17odx08id-1.aspx

Hello again everyone sorry it’s been a while since last post or question, been working hard and had my nose to the grind stone, face stuck in many books along with heaps upon heaps of magnetic theory and EE lectures muhahahahaha. Ok to the question, I have been having some trouble finding a...

I need to calculate the mutual inductance between multiple aiding coils. The above formula is fine for 2 inductor but I'm looking to calculate the mutual inductance for up to 30 or more parallel coils wound on the same magnetic core. I can not find an example or formula for more than two coils...

Hi again and thank you again for the help If I have two magnetic fields, one permanent ring magnet B2 free floating on a fixed electromagnetic coil B1 and the field are perpendicular 90 deg to each other will the free floating permanent ring magnet feel a strong magnetic torque and rotate...

I wanted to say thank you again for your help. I am going to start changing my physics model when I get home tonight to see the differences with the core split with a gap and the CCW/CW windings. The single wire makes it a lot easier to construct the prototype thankfully :) I have been cutting...

So if I split/cut the core in half and use a spacer of nonmagnetic material then I can wind the B1 and B2 coils as drawn with the CCW and CW winding with the single wire, then the permanent magnet will experience force? This way B1 and B2 are individual coils on individual cores correct. It is...

that is how the system is designed now with individual electromagnets currently, I was just hoping a split coil might have been possible because it would get rid of the timing requirement and having to rout wire inside the core or notching the core to rout the wire so that its flush with the...

In short making individual coils for electromagnets then to develop B1 and B2 is the best way to proceed? The core material is required to develop the field and lower the current needed for the electromagnet. There is less and 0.1mm separating the OD of the coil windings and ID of the permanent...

The artist did a nice job J I have a lot back ground on my work computer that are artist rendering of deep spaceI want to apply magnet force on a free floating permanent ring magnet B3 that has 1 or multiple electromagnet ie: core and windings that generate B1 and B2 field through the center of...

I might need to clarify a little more my goal is the magnetic force between B1 and B3.So B1 would apply no magnetic force against B3? the overall field strength can be just B3 that’s not what I'm looking for, what I am actually looking for there to be force between B1 and B3 So if B1 and B2 were...