magnet gravity

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 11 years ago  |  last reply 8 years ago


Electro Magnets

If an electro magnet is suspending something in an vacuum environment, will it act as a medium? (Will sound waves be able to pass through the magnetic field?) Thanks

Posted by Weissensteinburg 11 years ago  |  last reply 11 years ago


magnet motor or not ?

Is an angle grinder motor a permanent magnet motor or not ?,

Asked by nicobotha12345 9 years ago  |  last reply 9 years ago


magnetic bed

Since our cells are electrically based, I thought I would try sleeping on a magnetic bed, any plans out there?

Posted by katesisco 11 years ago  |  last reply 7 years ago


Neodymium Magnets? Answered

I have a motor out of an waxer/buffer and I was wondering what improvements neodymium magnets would be.  I have a couple plans for this motor, the first being for a temporary ball mill, and the second for a generator.  I am pretty sure the neodymium would be good for a generator, but what about a motor.  I am also wondering what magnets to get.  Should the north pole be the outside, south pole be the outside, should it be magnetized thru circumference, magnetized through thickness, or south on one side and north on the other.

Asked by jj.inc 6 years ago  |  last reply 6 years ago


Magnetic spec

I was wondering how big a cylinderical grade N42 NIB magnet i would need to pull a copper weight of 20 grams from 3inches? I dont know how to calculate so... If you could, that'd be great

Posted by lifelong-newbie 10 years ago  |  last reply 9 years ago


Focusing Magnetism? Answered

Hi y'all! I am wondering if it is possible to focus magnetism? Like if you have a powerful electromagnet with a less powerful electromagnet wrapped around it. Then if both are turned on, the small one will focus the larger one creating a straight electromagnetic field and making like a "electromagnetic laser".  Thanks, joespicnictables

Asked by joespicnictables 6 years ago  |  last reply 6 years ago


Electro-Magnet

Ok, i'll be frank. i need to find out how to build an electro magnet with and effective ranger of about twenty or so feet i find it very interesting. and have always wanted to snatch up a small object/scramble a crowd of cellphones. former more than the latter. any help would be very appreciated. THANKS

Posted by blingity 10 years ago  |  last reply 10 years ago


Magnetic Rotor

http://youtu.be/zqG-TL0WnjE How does this device work? Has it ever been on instructables or anything like it? How would I go about mounting the magnets on the rotor? What sort of spring would I need for the magnet mounted to the vertical shaft that slides up and down? In short I want to know every little detail about building it before I begin so I don't go buying a lot of unecessary stuff and waste money.

Posted by merlin280 6 years ago  |  last reply 5 years ago


Magnet Wire

Cutting open transformers (you might call it an adapter, or charger) yields a good quantity of re-usable magnet wire. Motors don't seem to be a very good source, since the windings on those seem to be saturated in varnish to glue em together. Apparently, vibration is more of an issue in the motors, so they make the windings solid. This might be different in little hobby motors. Dunno.

Posted by Toga_Dan 4 years ago


How can I make my son's Risk game magnetic?

I was thinking of copying the game board and gluing it to a piece of metal.  And then painting the "men" with magnetic paint, however, the paint is so pricey (especially if this doesn't work).  I was hoping to find a way to make my own magnetic paint....or perhaps a different way to accomplish this.  Any ideas?

Asked by nieman565 7 years ago  |  last reply 7 years ago


Linear Magnetic Field

I am stuck in my research,please tell me a way to make a linear electromagnetic field,other than making an outer core for it please help me

Posted by ajose4 4 years ago  |  last reply 4 years ago


Convert magnetic to electrical? Answered

I am trying to find a practical way to build a device to convert magnetic energy into electrical energy, some kind of generator or other device, there are several ways in which this might work in theory but actually building the device would be more difficult to figure out.

Asked by thedriftcore 6 years ago  |  last reply 2 years ago


Magnetic switch to USB?

Hi, 1st post hope you can help! I'm trying to find a way of getting analog data (from an exercise bike) and store it onto a computer in a text file so I can manipulate it and work out averages etc. I thought of having a magnetic switch on the pedal so that everytime the pedal rotates I can store the time thus giving me the speed. Does anyone know if such a cable already exists or if not how to go about creating one? Also if anyone has a better way of getting the data I'd love to hear from you. Many thanks Adam

Posted by adamt_069 10 years ago  |  last reply 10 years ago


Magnetic field redirection? Answered

Hi, I've never seen a community so welcoming and intuitive than the instructables community, so I decided this website is the best place to ask my question. I'm sure there is someone hidden deep within the fathoms of instructables that is versed in the matter of magnetic field redirection. I'm working on a project that I will post an 'ible of, (truly wireless speakers ;)) but I need some method of redirecting a magnetic field so it doesn't interfere with the speakers. I have heard of some methods, i.e. Mu metals, MagnetShield, but these are not easy to come by, especially in the UK. I have considered ordering from the manufacturer, but I am not willing to pay the exorbitant shipping costs. I would firstly like to know if such a material exists, or if alternative/better/cheaper methods are available, secondly, whether or not it can be procured in the UK, and if so, where, and thirdly, proper application of such a material. I have done lots of research into the matter, but have been left fruitless. I'm sure someone can help.                                                                 Merry Christmas,                                                                                             icyseptember

Asked by icyseptember 8 years ago  |  last reply 8 years ago


what is the specification of a magnet?

What should I ask in a shop to buy a magnet(not electromagnet )?

Asked by piku2323 9 years ago  |  last reply 9 years ago


Feel a magnetic force?

I was just wondering is it possible to fell a magnetic force on your skin and if so how?

Asked by Dominator57 7 years ago  |  last reply 7 years ago


Will a magnet work in space? Answered

Will a magnet work in space, if so, will its strength be affected making it seem stronger or weaker?

Asked by Kaptain Kool 7 years ago  |  last reply 7 years ago


magnetic ball bearings

How do  magnetize my own ball bearings for making magnetized Fullerine geometry? Sorry cant find the right word for it, i'm obviously scientificaly challenged.

Posted by craftyv 8 years ago  |  last reply 8 years ago


Electro magnetic Gloves

So, we've seen magnetic gloves..but we don't always want the magnets. So, instead of taking off the glove, why not make an electro magnetic glove? Do you guys like the idea? Should I pursue it? Make an instructable on it?

Posted by Weissensteinburg 11 years ago  |  last reply 2 years ago


Questions about Magnets

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 4 years ago  |  last reply 4 years ago


magnet powered LED

Ok i remember seeing something, or maby its just a thought in the back of my head. but is there a way to make a led light up when you move a magnet by it or something like that?

Posted by yuckzee 10 years ago  |  last reply 10 years ago


An Unhealthy Obsession With Magnets

Ever since i observed the attractive/repelling invisible force of the magnet i was interested in this mysterious action at a distance what compels the movement of metal the laws, the principles, wow electromagnetism cool stuff

Posted by eoosen 11 years ago  |  last reply 10 years ago


Permanent Magnet Motor

I learned a couple of years ago about a motor developed by Nikolai Tesla that operates using neodymium magnets. If anyone has any information about this or other similar motors, please post information and help to save the earth from the evils of oil!

Posted by HazzardFan75 10 years ago  |  last reply 1 year ago


HMC5883L with external magnet

GY-273 HMC5883L Compass A. I'm waiting for my chip to arrive and will attach it to a RasPi. B.  My question is: if I align my chip to "N" then rotate a magnet round the chip - i.e. a weathervane - thoughts on how that might work? C. Can my magnet, if too strong/close, damage my chip? Thanks

Posted by liderbug 3 years ago  |  last reply 3 years ago


Toxic Magnet Wire?

I know I'm probably going to sound like an idiot for asking, but can magnet wire release any toxic fumes when heated? I made a speaker using a magnet-wire coil and a neo-magnet, and when I plug it into the amp, I realized the coil gets very hot. I was expecting this, for I've used a number of coils in other projects. There is an odor, no doubt, that comes from every coil I've used when making an electromagnet. Sure, the smell may come from the iron nail being heated, but I always associate the smell with the coil. I'm not willing to smell this speaker, however. So, is there any risks that come from the heating of magnet wire? The coil gets hot after about a minute of run-time, but I'd like to be able to run through an entire album of music (an hour?) if possible. Thanks!

Posted by freethetech 7 years ago  |  last reply 7 years ago


Ikea hack with magnets

Hey guys!I just bought myself a Ikea PS laptop workstation. I thought it was heavy enough to stand on its own, turns out it isn't. I don't want to drill holes on the wall, I thought about using magnets to give balance to it.Questions are:- can I do that? I mean, magnets to hold a metal structure plus using that to hold electronics such as laptop, DS, camera, mobile etc.- in case I can, which sort of magnets should I buy? The open lid on the Ikea PS supports up to 25kg/55lb, plus 15kg/32lb from the PS itself. There will be support underneath to hold the weight (thought about using glass jars, grouping three on each side, totaling six), so the magnets will mostly add balance to the structure, and not hold its entire weight.Thanks a bunch for taking the time to read this! A good day to all.Cheers,Diogo Slov

Posted by slov 10 years ago  |  last reply 10 years ago


Cell Phone + Magnet

I was playing around with some of my 1/8in. NeFeBr (or is it NeBrFe?) magnets leftover from the challenge. Was using them to find screws on my flip phone. I noticed that when I put it at the "joint" of the two halves, the screen went dark. Turns out it thought I shut my phone. This was just a little odd tidbit that I wanted to share, that has potental. But, it isn't an instructable, so I just posted it.

Posted by zachninme 12 years ago  |  last reply 12 years ago


Magnetic Levitation Tram? Answered

Hello there instuctables, I need your help with a project i am attempting, i am in the process of making a maglev tram and i have a couple questions i need help with? 1. I have a simple circuit for a linear motor that i understand to the most part but i need help with finding an electromagnet to use / make, it needs to run on batteries and obviously the main concern here is weight and stability so the smaller the better but still needs to be strong enough to propel the tram along the track so i suppose my real question is what ammount of winding, resistance and core material would be suitable for whatever voltage i could provide! 2. Next i suppose what way round should i place the magnets, should i place many electromagnets on the rail with sensorsand permanent magnets on the tram, or should i have a powered electromagnet on the tram and permanent magnets on the track? 3. Also what hall sensor should i use to detect the magnetic fields, unipolar switches or ratiometric sensors? 4. And finally control, how would i control the motion of the tram i.e. speed and direction? Id like to thank you all in advance for any help you could provide and i hope my description is accurate enough!! many regards, Scott Photo of simple linear motor circuit (img.1) When the hall sensor (switch) senses a pole of a magnet, it activates the transistor, in turn magnetising the relay and causing the current in the electromagnet (motor) to run one direction, then as the opposite pole is detected the relay de-magnetises and reverses the current thus reversing the pole on the electromagnet! This is designed so that with permanent magnets on the track in an alternating fashion of poles (nsnsns) the tram is either pushed or pulled along the track! 

Asked by Xmortx114145 6 years ago  |  last reply 6 years ago


Magnetically Propelled Bicycle

I was told that I should make a forum topic out of this. So here it is:Here is a link to my upublished instructable:Magnetically Propelled BicycleI came up with this two weeks ago while I was day dreaming about levitation and magnets.The idea is that one stationary magnet set up on the middle of a bicycle negative facing front, can push two magnets bolted together, each facing negative, with an axle running through them and wheels on opposite sides. So when the stationary magnet'ss power is increased, the two magnets in front will be pushed, thus rotating the axle where the wheels are attached, adn obviously the wheels are turned.I say "when the power is increased" because hopefully an electro magnet can be used. I am not sure, but I think an electromagnet can be hooked up to a car battery, and then with some control device, more electricity can be sent to the magnet, possibly increasing the power ( I don't know much about this stuff so help me out here.Look at the schematics for all of the anatomy.I have not figured the turning system out completely, in the intro picture you may see that the turning wheel is connected to the rear by a bar ( In the way I believe it may work there will be two bars side by side, I can't really explain it yet). That is how I plan the turning to the controlled.If you have any ideas for this project, add a comment. I have not made this yet and am still creating it.Please, do not steal my idea, I am only 14 and just started inventing. I have no idea how the patenting system works and I do not have the money for it.I would also like to know more about electromagnets, how they work and where to buy them. I saw one site where the best electromagnet can "pull" like 1300 pounds, so this thing should go pretty fast if it is built properly. I reallly want to know if it is possible for electromagnets to push, that is the whole Idea for this. But if they can't, I've already drawn a simple schematic for pulling the wheels which is on the next page.I also want to add that the stationary magnet cannot be level with the rotating magnets, it will have to be a little above, and if you add a mechanism where the stationary magnet can move up and down, you can control the bike forwards and backwards.Hopefully, no one has a patent on this ( I've searched and haven't found one). And hopefully this will replace fossil fuel vehicles, although I doubt the government will allow that. THE WHEELS/ROTATING MAGNET IS NOT ATTACHED TO THE BICYCLE. IT IS ONLY CONNECTED BY AN AXLE RUNNING THROUGH IT. JUST LIKE A BICYCLE OR A CAR. Here is a link to what I was sorta thinking:Here Just turn it horizontally and add wheels to the ends. The gyro- thingy is like the rotating magnet and the base is like the stationary magnet.

Posted by Alphaviking 11 years ago  |  last reply 11 years ago


Electromagnetic and Magnetic Levitation

Hi! I am setting up a levitation system and need to estimate the amount of voltage and current that is needed for a 2" dia. coil to produce 4800 Gauss. I don't have any restrictions/requirements on the core, number of turns, etc as long as it would produce 4800 Gauss with a 2" diameter. How can this be calculated? (I have spent a lot of time googling for such information, but I am pretty confused and didn't find how to calculate this) Thanks!

Posted by J50Nunlimited 9 years ago  |  last reply 9 years ago


Magnetic accelerator coil Answered

Im going to try to keep this short. So a friend and I are both sophomores at our highschool and we are both in chemistry (which is a higher level science) and i built a coilgun for last years project and attempted to build a PWM driven one this year. My friend and I want to build a rather large coilgun using either 10 microwave oven caps or close to 40 or 50 caps from computer power supplies. What i need help on is whether we should use the microwave caps which are high voltage but low capacitance or the power supply caps which are 200 volts and around 500 micro farads. I also need help on what wire to use for my coil and how many turns for the coil. i would like help with a coil for each cap size. We are planning on using either a 3millimeter by 5 centimeter long steel rod or a quarter inch bolt. our goal is to at least shoot it through the wall of the physics classroom and maybe through the door of a car. anything helps. Thank you

Asked by budhaztm 7 years ago  |  last reply 7 years ago


Is it possible to make the magnets lose it magnetic field permanently? Answered

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  |  last reply 3 years ago


How to make magnetic ink?

Asked by Dustc53 7 years ago  |  last reply 7 years ago


Magnetic strip card reader/writer

Hey guys I am looking for a way to make a magnetic card reader/ writer. any one knows where i could find a how to for this. thanks a lot

Posted by DELETED_kclv1988 10 years ago  |  last reply 9 years ago


can i make a magnetic POV? Answered

I made a small scetch (in under 1minute) of what i mean, its really raw, just to get the idea. my idea is to make a small box, with a moving POV in it, wich moves only from the left to the right, and back. this uses a small POV system, 2 elektromagnets, some way to make the leds go in the right direction, some iron/steel, and something to controll the magnets. i wanted to know, is this possible, and if so, what magnets, controlling device do i need and how do i make the leds go in the right direction. i've considered the tracks from a CD player, but i think theres a cheaper/better way to acieve this... if i get enough info to make one, il make a full instructable of it :)

Asked by godofal 9 years ago  |  last reply 9 years ago


what is the easiest way to make magnetic ink to print checks with?

Checks require "micr" ink to be read by buisness check readers. there has to be a way to make it for almost nothing

Asked by norcalkracker 7 years ago  |  last reply 7 years ago


How do you go about removing salts from bore water with magnets?

There are some products about that claim to remove/breakdown salts etc from bore water. They consist of a giant magnet that straps around the PVC out flow of your bore. They can cost over $1000 AU. - Is it possible to DIY

Asked by 10 years ago  |  last reply 8 years ago


How to build a cheap magnetic stirrer?

I want to build a cheap magnetic stirrer. I would like it if I could get all the parts at radioshack. Not essensial though. I would also prefer using a 9 or 10 volt motor. Someone Please tell me how!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Asked by sci4me 9 years ago  |  last reply 9 years ago


how do you know the size of the magnetic field with respect to the amount of electricity?

For example you have an electromagnet and it has an electromagnetic field how can you know how much electricity to put to make a magnetic field with a specific size (like this many volts equals this many meters in diameter)

Asked by HassanA32 3 years ago  |  last reply 3 years ago


Can I place two speakers back to back in a box, any issues being too close or touching? Answered

2.5w 8ohm 3" speaker in a plastic box 1cm apart, possible to operate?

Asked by celalboz 8 years ago  |  last reply 8 years ago


How can I do a Very Strong Electromagnetism device?

Hi, I want to do a electromagnetic device, that must be like a cilinder, because I will put a "armature" to protect that. I need 7500 Gauss, or near this. I dont know how materials is necessary and the wire, spins, turns. If I do anything wrong is possible that  device will be very hot and dangerous. This device can not be very big (can be 20cm  and diameter like a 2,3cm). Voltage is not a problem. Tks.

Asked by sidjunior00 9 years ago  |  last reply 8 years ago


Are there magnetic dc power connectors ?

I want to buy some magnet dc power connectors like the ones on macbooks.  I am not going to use them on a macbook.  It will be for a quick release for my bicycle light.  I have searched the internet and have not found any, but they must exist.  they would be so useful for my project.

Asked by Noblenutria 6 years ago  |  last reply 3 years ago


Magnetic or IR dog door

Does anyone know if it is possible to DIY a "smart" pet door? Something like this is what I'm talking about. Basically, I want to let the dog come and go as she pleases whilst keeping the cat inside. Thanks!

Posted by rday 10 years ago  |  last reply 10 years ago


Help!! LED Candles- Magnetic Switch

Hi,I am working on a Play and we need candles. Since we can't have open flames on stage (fire code=lame) So I want to build or purchase some LEDs candles to use. Here's the catch- I want the actresses to be able to "light" the candles. So my idea was to put a rare earth magnetic in a match book and have them hold it near the candle to start up the LED. The only problem is that with all of the magnetic switches I have seen they are momentary. I want to be able to remove the magnetic field and still have the light be on but once I put it back towards the candle I want to turn the candle back off. Any suggestions of a switch like this or any other bright (no pun intended) ideas?ThanksAll comments/ questions/ concerns are welcomed.Thanks again.Joe

Posted by joejoerowley 10 years ago  |  last reply 10 years ago


how magnetic induction data transfer from sensor happens ?

Hi, i want to know how data from sensor is transfered by coil through magnetic induction to another coil ? i know its range can be increased by relay coils but how to append data to the magnetic flux.. its really confusing . pls some one help me thanks in advance

Posted by rockindud 5 years ago  |  last reply 5 years ago


how can i bypass a magnetic door lock without cutting the juice ?

How can i bypass a magnetic door lock without cutting the juice ?

Asked by kaerez 10 years ago  |  last reply 11 days ago


Where can i get small toroids for magnetic core memory?

I have really wanted to do this but I could never find those pesky rings!

Asked by seanroberts 8 years ago  |  last reply 8 years ago



Magnetic Levetation? A Magnet Levitating between two Bismuth plates?

I am trying to make a magnet levitate between two bismuth plates that i made (picture 3,4,5 and 6). As you can see they are round discs about 7mm (millimeters) thick and 110 mm or 11cm (centimeters) in diameter. I bought two magnets; -the one I am trying to make levitate is 30mm (millimeters) in diameter, 10mm thick, and 22kg (kilograms) strong... -the other that is on top, the one that is pulling the magnet up is 30mm in diameter, 15mm thick and 23kg strong I put my two plates of bismuth so that there is about 25mm of space between them... Than I put in the 30mm x 10mm magnet that I want to levitate inside. The other magnet is located above the setup. I very slowly, ever so carefully start to lower the magnet. The magnet between the two bismuth plates starts to shake and at one point hits the top bismuth plate. I can't make it to levitate, either it is on the bottom plate or on the top. I tried to make the space between two bismuth plates smaller and larger, to lower the magnet by a very small amount...it didn't help... PROBLEM: I can't make it levitate, either it is on the bottom bismuth plate or on the top... WHY IS THIS? HOW CAN I FIX IT AND MAKE IT LEVITATE? Thank you for your help! -Stanislav A.K.A. Comodore

Asked by comodore 9 years ago  |  last reply 6 years ago