Recent content by congraduation

anyone?

any how, i have this equation. I have read a quick online tutorial on maple. this is my equation in raw form Br*(arctan(W*L/(2*x*(4*x^2+W^2+L^2)^(1/2)))-arctan(W*L/((2*(x+2*T))*[4*(x+2*T)^2+W^2+L^2]^(1/2))))/Pi because i have 5 varibales, i did B1(Br,W,L,T,x):= [the above function] Now, i...

you can say the magnet is moving through the center of a Toroid. I need to find the induced voltage as the magnet moves up at variable speed [as a function] through the Toroid on which the wires are wraped around a magnetic core http://hyperphysics.phy-astr.gsu.edu/hbase/magnetic/indtor.html#c1...

so i have this [project] [PLAIN]http://img841.imageshack.us/img841/1220/finaldiagram.png N is up, and S is down. Simply a coil of wire in a rod shape goes around the magnet How do i apply the faradays equation on it. I know the rate the magnet moving up, let's say 5m/s. The problem I'm...

Thanks alot. I finally figured out how to do it. I kinda ignored the air gap and assumed the two basically act as single magnet because if you think about it, the two magnet will simply form one big mangnetic field which could be used as a signal magnet. What now left to do is to come up with...

Thanks I think the problem is solvable,. I want to be sure I'm on the right track First, the magnet is in a small air pocket, then comes the steel/iron which has the coil in it. I exaggerated the diagram. Second, it will be only the magnet moving vertically up and down with a defined velocity...

Btw, is it possible using FEM software? I have ansys but I don't know how to use it yet. I do have CAD model of whole setup. Maybe if you know, I can forward you the model to carry out the FEM. I don't have time right now to learn whole Ansys. If I'm able to do what this author as done...

please read my previous message.. I updated it..took a long time to edit it :p ? what exactly is [PLAIN]https://www.physicsforums.com/latex_images/33/3302816-0.png? residual magnetic flux density in Gauss the type of magnet I'm using is Neodymium Iron Boron. ANd according to this random paper...

I think i found what I was looking for take a look at it. http://www.magneticsolutions.com.au/magnet-formula.html#sr it doesn't involve any dipole things you mentioned. >>I THINK THAT WAS IT<< but I'm trying to understand how the equation work. Like I want the field on the coil of wire...

How about we assume the permanent magnet has the same properties of an electromagnet. The permanent magnet which I chose was Neyodium Iron Boron magnet with its magnetic properties known. If we assume the permanent magnet behaves like a electromagnet, how will I then calculate the flux density...

Its really late here, going to re-read your post and the equatino. I'm going to assume loads of values but I need to use the temperature too. Going to assume its dipole and everything. I just want to find flux density on a flat small simple xy plane section!, its just for a simple project. i...

Thanks for link. I never knew the magnets were anything like 'dipole'. After going throught the pages, I think found the equation I was looking for. http://img863.imageshack.us/img863/7309/coil.png Just to clear myself to you what I'm trying to do. I have a coil of wire in a rod shape around...

how can tell me flux density over a specific area from r distance from the source of magnetic flux?

all it has is B(r,t)... what i have is magnet with all the properties known radial distance to the coil of wire, about 9 cm. I need to find the amount of flux on it. I also need to find the flux on the wire when the manget moves vertically up with 1cm increments. I have no clue how to do it. Do...

its more of a project, i read hte faradays wiki page, the page doesn't mention anything about measuring change in flux density as you go away from a permanent magnet. I need to find the best line of fit by plotting the change in flux with distant and derive it with respect to time to find...