What should I ask in a shop to buy a magnet(not electromagnet )?
Asked by piku2323 8 years ago
Is this increase power of magnet or not?
Asked by Pankaj q 3 years ago
So for the past month my study has been magnets (how do they work) and ive come to electromagnets. what variable/s would affect the distance of a magnetic field. or rather what produces a bigger field, higher voltage, or amperage? thin wire and many wrappings or thicker wire and fewer wrappings. also if anyone knows of any good simulations on electromagnetism they would be much appreciated
Asked by snowfox222 4 years ago
Hi, let's say i have a permanent magnet and an electromagnet The permanent magnet is strong probably 50-100mt, the electromagnet is week less than 10mt, (the electromagnet being just a loop of wire, nothing inside, just air) I need the electromagnet to capture all the lines of the magnetic field of the permanent magnet and thus make my electromagnet stronger, They can be placed at a distence of 3-5mm from each other I can isolate them and put them in an environement where once activated the electromagnet would offer to the permanenet magnet a path of least magnetic reluctance Since the electromagnet is weaker (and probably has less magnetic lines) will it still be able to capture all the lines and strength of the permanent magnet and direct it with almost no losses to the other end of the electromagnet (cause the electromagnet is quite long ) How much weaker can it be untill it becomes useless in capture and directing the entire field of the PM (10 times, 100 times)? Any advice? Thank you in advance for your assistance
Asked by Elys 2 years ago
Asked by nit1111 5 years ago
Dear All.. If two coil A and B without iron core same as (size) dimension and but coil A winding with 28 gauge and coil B with 32 gauge magnet wire Please help me to know : What is name coil more force for attract a piece of ion metal. Many Thank you Best regards lam
Asked by lam 2 years ago
For example through a solid thick material that must not be pierced ? ( it will be more helpfull if the basic circuit block diagram is porvied)
Asked by baburam83 9 years ago
It doesn't need to be exactly 10000. that's just my goal. It doesnt need to be mobile and can run off 120vAC. Conversion to DC is expected. Essentially. I need to try and get a handle on the math and practicality of this to understand the scale. Any input is welcome
Asked by dggriffi 6 years ago
I know magnets can lose its magnetic properties if exposed to heat, but is there a way to make the magnets permanently lose its magnetic fields?
Asked by Plasmana 9 years ago
Couldn't, with well position magnets, create an orbit around a central magnet? Almost like perpetual motion? I've been playing around with magnets lately, and I've gotten magnets to do 2 full revolutions around other magnets before coliding. Is it possible?
Posted by guyfrom7up 10 years ago
Asked by stephenniall 8 years ago
I am thinking about a big project that includes magnets and I would like to know where to find them in Israel where I live
Asked by mrnadnad 5 years ago
Ive seen plans to build electro magnets where a metallic object is dangled upside down. this company inverts it so the metallic object is propelled upwards. from some of the pictures ive found it looks to be four magnets working together. any one have any info on building one from scratch? the first site below have videos of it in action. http://www.floating-lamps.com/floating-technology/ www.crealev.com
Asked by autoflow 6 years ago
I want to make a speaker and i want thumb sized cilyndrical neodimiyam magnets.i live in bangladesh and radioshack or online shopping is not available.but my workshop is full of junks and can i salvage any magnet from there.i tried to buy these in shops but could not find it.please help.thanks for viewing and answering
Asked by argha halder 4 years ago
All that space under your dining room table has been going to waste... until now! Install neodymium magnets all over the place and you have an interesting concept. I'd be in constant fear of knocking a cup and saucer onto the floor with my knee, but it's not like anyone's really gonna make this and use it. Right? linkvia Gizmodo
Posted by fungus amungus 10 years ago
Hi! I'm incredibly new here and already in way over my head! Hope this is the best place to ask this. I wanted to create a mirror that is magnetic to hold tweezers, nail clippers, etc. - lots of little metal cosmetic bits that get lost around my home. I can't attach magnets to the items themselves because they are too small - would it be feasible to glue some rare earth magnets behind the mirror? Or will I just get a giant chunk of mirror embedded in my face? :( I'm trying to spruce my home up on the cheap and keep the small space organized. I have a sampler pack of rare earth magnets from lee valley and some framed mirrors already. If this is feasible could anyone tell me how far apart I should be spacing the magnets? I feel like such newb! I guess I am one. But anyway, I humbly beg at your feet! Please help! Thanks folks!
Posted by Stasiasilver 5 years ago
I am working on a project in which I have to control a small setup at the end of a motor shaft using an electromagnet. The electromagnet needs to be around the shaft inbetween the setup and the motor. So I have used a metallic ferromagnetic spool(image attached) and wound 32 gauge wire on it to make it an electromagnet and put the shaft through it. Since this core made out of spool is hollow, I'm not sure how the magnetic field will behave. I tried powering up the one I made and it' seems to be both attracting and repelling a magnet's pole (edges attract while centre somewhat repels). Anyone got any idea about this?
Posted by Antzy Carmasaic 5 years ago
Hi everybody, I would like to know if anyone can help me for this idea. Indeed, I would like to create a touch sensor which will be connected to a magnet system. To be more accurate, the idea involve the same process as a touch screen phone where one needs to do a pattern with 4 touch sensitive cases . The pattern would create and electrical impulse, which would unlock the box by detaching the magnet. So in a nutshell I will need a touch sensors pattern programing that would send an electrical impulse to detached the 2 magnets. I need this system so it could help me for my 1st creation. It needs to be very small to fit in a box of altoids candy for example. As I said, as a 1st creation I am completely lost for all theses "programmation" skills required. Thank you for your help. Beniver
Posted by Beniver 3 years ago
So i have been taking apart alot of electronics, looking for sweet pieces for my arc reactor im building and today i decided to take apart an old Goulds jet Pump. Inside i was please to find all this coperwire. I just LOVE the look of this thing, and i know people always build coil guns and all that cool weapon stuff. There has GOT to be a cool use for this, other then giant paperweight. Any suggestions. Here is a photo of it. That copper goes all the way through it. and looks the same on the other side.
Posted by valmont325 6 years ago
I want to make a fairly strong electromagnet for general use but I also have a task in mind. I live in an apartment building near some students and someone egged my window. The egg dried in and now I can't reach it to clean it. I've see magnetic window cleaners before but they are cheap, weak and not up to task so I'd like to make an electromagnet to help with the scrubbing action. The windows are double glazed and the neodymium magnets I have are not strong enough. The only electromagnets I've ever made were the basic science experiment type, coiled copper around bolt with a battery to power. For this I assume I'll need a large battery or would it be mains powered? Any suggestions?
Asked by nodnodwinkwink 4 years ago
Hi I just saw something weird, it's not an exercise or a problem but I still have a question : Let's say we have 2 electromagnets of unequal strengths X and X+Y; between them we have a ferromagnetic bar Let's say one has south polarity and the other one north if we change which one is stronger ex 1st is X, 2nd is X+Y than a moment after 1st is X+Y and 2nd is X the bar will have the polarity of the stronger one for a moment, right? ex for a moment the electromagnet with the south pole is stronger X + Y = the bar will become south pole than we return it to its normal strength X and make the north pole electromagnet stronger X+ Y= the bar will become north pole, right? How will such variations of the strength of the magnetic field on 1 side affect the entire device, will only the bar change its polarity and it will stop somewhere on the border of the second magnet or will the second electromagnet change it's polarity too if the first one's is very strong? (just wondering) If we fix a coil on the ferromagnetic bar will such variations in the magnetic polarities of the bar induce current in it and how much, as much as we used to produce the fields of both electromagnets or only for the field of the stronger one, or only the difference between 2? and the last question in the terms of relation between the strengths of both electromagnets (let's say in %) how much Y should be to change the polarity of the bar without affecting the polarity of the second electromagnet? Thank you all in advance for your interest, assistance and time :)
Asked by Elys 3 years ago
I'm thinking of building a floating globe sort of thing. How do I determine what size of electromagnet I should build? The globe itself would be fairly light, so the strength at range would not be much of an issue.
Asked by MaximY 1 year ago
Asked by Noodles422 6 years ago
I have an earth magnet/ neodymium magnet that is pretty strong as far as pulling power is concerned but would an electro magnet have more pulling force or power. Its a small enough earth magnet that fits in my pocket. Thanks. AL.
Asked by alsports2000 6 years ago
This Idea is based on Magnetic Repulsion and Kinetic force. According to diagram there will be a Wheel and a magnet(1) will be attached with this wheel. There will be a balance system(seesaw system) and two magnets(2no.magnet and 3no. magnet) will be attached with this balance system . when 1 magnet will repel 2 no.magnet then the 2 no.magnet will move upward and due to this movement the 3 no. magnet will come down and will work to repel 1 no. magnet and wheel will start to rotate. when 1 no. magnet will again repel 2 no.magnet after a rotation then the 3 no. magnet will again work to repel the 1 no.magnet. In this way the wheel will rotate again and again.The magnetic strength of 1 no. magnet will be high than 2 no. and magnetic strength of 3 no. magnet will be high than 1 no. magnet. I want to develop this technology.
Posted by vikram_gupta11 1 year ago
Asked by m7med98 5 years ago
Asked by Salesh 7 years ago
I heared that permanent magnet motor works on magnet repulsion and it is free energy device that works for life time....... is it true???
Asked by rachit59 8 years ago
I had an idea, but it will only work if an entire room is filled with a magnetic field. I plan on doing this idea within 30 or so years, so you can take you time answering.
Asked by The Mollusk 9 years ago
Can an electro magnet have more gauss than a neodymium of the same size? I was just thinking about robots and advanced prosthetics. One issue with them is they require rather bulky motors to get the lifting and holding capacity we often require. So if power wasn't an issue and you could make a small elecro magnet that has more gauss/a stronger magnetic field than a neodymium magnet. Than we could make strong and smaller motors. Just a thought. Discuss!
Posted by mpilchfamily 3 years ago
I just was wondering 'cause I have three#
Asked by nerd7473 5 years ago
I know that naturally this doesn't exist. However what if i was to take two identical domed magnets and attach them to each other (not sure how I would do this) shouldn't this create a magnetic sphere with north on the outside and south on the inside. As shown in the picture. Thanks
Asked by mikecharlie 6 years ago
I dont have access to buy neodymium or much parts like roms and hard drive to slavage dozen of it. all i have are craft magnets.. ceramic type i think...
Asked by No-Shi-De 7 years ago