tesla coil resonance

How do i get a tesla coil to resonate

Posted by science kid 8 years ago

Tesla Coil

Can someone PLEASE make an instructable on making a tesla coil that shoots sparks???

Posted by MisterHankie 9 years ago

Battery Powered Ignition Coil

I have a few lawn mower ignition coils lying around, so I thought I would make something out of them. The problem is I do not know how to make the coil run off a battery. Here is a picture of the coil. I would greatly appreciate any help.

Posted by Sedgewick17 10 years ago

tesla coil wire

What Gauge. Wire would you use to make a 2 foot tesla

Posted by wiccakingkamui 5 years ago

Ruhmkorff coil

I want to build a Ruhmkorff or spark coil for more power for my X-ray tube and a Tesla coil. It is a high voltage transformer and I need at last some 50 kV. If you have any information of how to build such device, then write it here please.

Posted by 012345678910 9 years ago

Induction coil

Hello i want to make a powerfull induction coil. But all the designs i made, always burn the contact point. Pls help me with the no. of turns in the primary and 2ndary winding and wire gauge as well thanks.

Posted by Jezan 9 years ago

Beginner Coil Guns

I am looking to build my first coil gun. I don't have much experience with capacitors/capacitor banks. I'm looking for a recommendation on capacitors that I could use for a coil gun that would make a proof of concept coil gun that would be safe for my first time venturing into this area. Any Ideas? I would probably order the capacitors from Digi-Key rather then harvesting them from other electronics. Thanks!

Posted by T3rr0rByte13 3 years ago

finished tesla coil

I'm a self declared electrical engineer going to school finished tell supplies come in. What do you think? And are this appropriate rf chokes

Posted by wiccakingkamui 5 years ago

Coil Gun

HiI am planning to build a small (length about 15 cm) portable coil gun. There are some really good intructables out there. (I still don't have enough knowledge of how to build this thing) I found this site to be pretty interesting. http://www.jeffhove.com/robots/coilgunhowto.html How can I make a powerful coil gun like that with capacitors (not that whole blob of camera stuff)? I am hoping that it could be rechargeable, perhaps by a USB connector (5V). But that would not last long right? So I guess by adding some batteries would help. Trying to get this coil gun to the smallest size with a powerful blow. By the way, there is something called EMF that affects the system?Thanks

Posted by J50Nunlimited 10 years ago

Stungun for power source for coil gun?

I’ve made a coil gun out of a disposable camera (utilizing it’s capacitor). It shot bbs about 3 inches, and then they’d roll along the floor. To get coil guns to work you need a high voltage, discharged quickly. I’ve seen there are cheap stunguns on Ebay you can buy for $12-$15 shipped. In the 2.8 million volts range. I think they have enough voltage to propel a bb pretty good, but my question is do they discharge fast enough?  

Posted by G.A.Pster 8 years ago

Tesla Coil Workshop

Instructables member Phenoptix put me onto a fun event this weekend - two chaps from the Extreme Electronics (Derek and Dave) website led an informal workshop on how to build a classic Tesla coil, from power supply through to topload and breakout. They also brought along a few of their toys to demonstrate what they were talking about, and I grabbed a few (shaky) videos. Thanks to Derek & Dave, it was a grand night, and thanks to the "Lone Scout" for the supply of coffee.

Posted by Kiteman 4 years ago

New Group!

Hey Everyone!!! I just created this group so we can all start researching coil guns :D Request to be in this group. everyone is welcome :D

Posted by rogueleadr 9 years ago

looking for reference/info on basic electromagnetic coil design

I am an inventor/re-designer and work with a wide variety of technology, tools and materials.  I repair all of my tools myself and have built a number of custom tools and devices. I was a professional auto mechanic for many years, as well as growing up and working as a building contractor for many, many years.  From those and other experiences, I have been exposed to many different coil-based devices. I have been replacing/repairing coils, coil actuated valves. relays, etc for 30+ yrs, but I've always just replaced the coils with the appropriate new part. I did rewire a relay last year, for the first time, when I couldn't bring myself to pay $80 for a new coil.  I measured the wire diameter, then carefully uncoiled it, measured the length, then rewound it with the same length of wire.  I figured it was worth the gamble of $4-5 on wire.  It works and controls my 240v air compressor, but it was a bit of a tenuous and nerve wracking job; I had wire ALL over my shop for an hour or two. I'm finding a need/desire to understand how different voltage coils, ie: 12v DC, 120v AC, 24v DC... are calculated/designed.  Can anyone point me to a resource that will explain the process on a non-electrical engineer basis? Thanks, GeoD

Posted by GeoNOregon 4 years ago

Tesla Coil with MOT's

Hello everyone, I am looking to get some advise. I am building a Tesla coil and cant really get any transformers other than MOT. I have four MOT with all their other components (Capacitors). What I am asking is can I use these MOT wired up in a certain way and I also read somewhere that I would need to add a component to prevent the MOT's from sucking in too much power. If anyone out there can give me some detailed advise it will be great. I just started the build so pictures are coming soon. Thanks in advance to you all

Posted by arenavles 8 years ago

coil gun ammo holder

I am currently creating a coil gun within a small nerf pistol. Everything is going well, it all fits within the gun quite nicely actually. But one problem I've realized is that there is nothing keeping the ammo within the barrel (a bic pen tube)  I would like to hear some ideas on how to keep the ammunition (which is currently undecided, if that helps. I'm considering either small steel balls or nails) within the barrel until the coil is activated. It is worth noting that because of the design of this particular gun, the trigger is not a lever, but instead a simple sliding mechanism that hits a button situated right behind it. One option I'm considering is using an electromagnet hooked up to a NC (normally closed) switch also hooked up to the trigger. The magnet would keep the ammunition in place, and pulling the trigger would turn it off. I have already added a sliding switch to turn on and off the gun, and I could wire the second magnet to that switch as well. The complication I foresee arising from that is that the electromagnet may still have residual magnetism for a few milliseconds, which could hold the ammunition in place for longer than it takes the capacitors to discharge. thoughts?

Posted by berky93 7 years ago

heating coil advice(resistance wire)

Hi, my name is david. im working on a project, for a device that is roughly .25-.5 inches long. im trying to find the right material resistance wire for the application. the components are submerged in coolant to maintain a low temperature. i wish to have a resistance wire of some kind wrapped around the components to heat them to about 90 degrees as quickly as a possibly can, for only a brief time(fractions of a second) i am using a variable power supply to determine my power needs. im hoping to be able to send a quick "signal" through the resistance wire, and use heat as a sort of input/output system. the internal components will melt at temperatures above 100 degrees.  so regulating the temperatures is key.  now obviously since they will be submerged in coolant, the resistance wire will need to heat to higher temperatures in order to heat the other components. ive been doing some research on nichrome and kanthal wire. but from what ive seen so far, it almost heats up to quickly, to higher temperatures than i require. it is hard for me to do the calculations, since i dont know how many watts/amps etc i will be using.  so to recap: temperature required about 90 degrees. (as quickly as possible, "flash heating" to 90degrees would be great) length is .25-.5 inch (the size will actualy be determined by the resistance wire i would prefer it to be as small as possible but i could make the module larger if i have to) variable power supply to determine my power needs(preferably the lowest possible power usage to conserve battery power) any suggestions on an appropriate material would be appreciated. i dont mind testing out different materials. i just dont want to spend thousands of dollars buying a little bit of everything and testing each one out one at a time. >< some experiments have suggesting silver coated nylon, but requires 20watts and a pretty sizable heating time. the heating coil will most likely have direct contact with the components, unless it is required to provide space between the coil and the components to heat it appropriately. i would prefer direct contact though to make the modules as compact as possible. currently the coolant is being pumped continuously through the whole system, but ive been working on plans for a valve to interupt the flow of the coolant during cycles where the coil is activated, if the need arises to keep the coolant from preventing the resistance wire from heating up appropriately. 

Posted by DavidW433 2 years ago

Tesla Coils

Is there an easer way to make a homemade Teslacoil? Thanks

Posted by spc301 10 years ago

I need help with my tesla coil! please help!


Posted by colinbarnes 6 years ago

Coil Winding on 4 Inch Cantex Electrical Conduit

My picturers are a mosaic of steps to take when winding coils on Cantex 4 inch PVC electrical conduit. Uses include Tesla coils, flow sensors, and antennas. http://aa8qv.blogspot.com Please forward any and all comments and suggestions. Thank you !

Posted by JohnHagy 6 years ago

Coil / Gauss Gun Question

Hi, I want to build a coil gun and i was wondering whether or not this design would work? For the battery i was thinking of using a 9volt, the multimeter is there so i can know when the capacitors are  fully charged, and the two switches on ether side of the battery is so i can disconnect it before i fire.

Posted by shadow4742 7 years ago

Methods for winding coils

When I read up on the coils used in power generation, I found that the wire used is a type of magnet copper wire, and I bought 1600 feet of it on ebay. My only problem now is winding the coil. I figure I can do something like wrap it a few hundred times around a pole thats slightly larger than the rare earth disc magnets I got. Anyone have any suggestions? Btw, most of my information is adapted from normal rotating wind power generators.

Posted by fafnir665 10 years ago

Solenoid secrets?

Folks, I recently purchased some inexpensive 110Volts AC solenoid coils from China through eBay (of course.)  As I understand solenoids will convert electricity into linear motion.  I have been unable to do that.  I tried ferrous rods as plungers, they get stuck inside the walls of the coil's cylinder.  No ferrous material like aluminum rod did not work at all.  Can someone please guide me to make it work.  I purchased 110 Volt coil thinking that it will create a stronger field, I don't feel the strengths of magnets to be rather weak. 1. The coil gets hot when energized.  Will it burn out if I keep the solenoid energized for 4-5 minutes? 2. Should I go for a lower voltage DC coil? 3. What happens to the dc coil if energized for long time? I would greatly appreciate your comments. Thanks.

Posted by kabira 6 years ago

montreal area coilers

Okay guys, good news: ive started the Montreal area tesla coil club. if you live in the Montreal area and want to join, please say so. our first project is a low power solid state tesla coil. pm me to join!

Posted by tech-king 10 years ago

Strong coil spring

Hi, I want to build a rotating mechanism powered by a spring. Once released,I need the piece to make 2 rotations in a fraction of a second. I also need it to be quite powerful since it will have to push another piece. For this application, I believe that a coil spring (such as those we can find in clocks) is the best suited, but will it be powerful enough ? An if I use a torsion bar spring, the problem is that I probably won't find one that can make 2 turns.... they are usually designed to be used on small angles only. I would be glad to have your advices ! :)

Posted by 1tibo2. 2 years ago

need help with a COIL GUN

    I was looking for someone to help me build my first coil gun. Everything seems to be working fine except it seems as if the coil is'nt getting any juice. The battery pack works fine, as do the capacitors. I can charge and discharge them without any problem.      I wanted to just get it working first before adding alot of power so it's a liitle on the mild side of the common 4-capacitor, 4-battery, 1/2 in. thick coil.  Here is a basic outline of what it's packing. 2 330v Capacitors 2 AA Batteries Kodac PowerFlash Circut The coil is 2/3 of an in. long with three layers making it about 1/4 inch thick. Uses a pen shaft as a barrel. Fires a 1/2 in. long steel screw.     The coil is made out of 24 gauge copper wire. The stuff we all used in middle school science were you had to scrape the ends off with sand paper or a knife. So I know it's insullated but all the help sites underline the use of "magnet wire".  Although my friend with more electronic knowlege assures me there the same thing. Oh, and i've insulated each layer with electric tape.     The way I have the circut set up I have 1 wire coming from the positive lead of the capacitor ON the actual circut to the negative lead of the extra capacitor. Then I have a wire leading from the positive end of the extra capacitor to the first end of the coil. To fire, just connect the other end of the coil to the remaining lead on the first capacitor.     I can only think of a few reasons why it would'nt work from just not enough capacitors to too small a coil, or just perhaps how I have it set up. I've also experimented with the position of the projectile but to no avail. It won't even budge.  I've included a rough drawing of the circut in this post. Help me instructables forum! You're my only hope.

Posted by darthDIY 8 years ago

Disposable camera innards

I was taking apart a disposable camera today and found this thing. It looks like it is probably a coil of some sort, and it has a little brother hanging out on another part of the circuitboard. The big one is about 1 cm across, and the little one is about 5mm. What, precisely is it, what does it do, how does it do it, and if I replaced it with a bigger one, what would happen? In idiot-english, please, I'm not well-versed on electrical devices. The little one, especially, reminds me of an ultra-small high-tension coil. Is that what it is? Does it perform precisely the same duty in this circuit?

Posted by Rishnai 10 years ago

25 KVA tesla coil transformer

I have a monster size transformer and I would like to sell it! it is made by general electric, 25 KVA, was oil cooled, (I removed it from its tank)this transformer is the same size used to power subdivisions, 4 to 30 houses ( think of the power!)just image the size of tesla coil this thing could power! WOW! tank size was 17X26X31I would like to get $400 dollars and you take care of the cost for shipping. thats about one quarter the cost of buying a new one even with the shipping cost. (350 pounds!)be reasonable! the person who offers me more money gets it! send me a email, NOT a comment at the bottem. I will wait 1 to 2 weeks to see who offers the most. 5/14/09 I will only take money orders, because they are the safest for you and me.

Posted by Danielro10 9 years ago

Combustion Chamber for high voltage spark

Based on Sir9's project http://sdch2o.free.fr/vrac/Sir9-Plasma-Steam-Engine.doc I am preparing to make my own version: The plan is to create a Tesla Turbine powered by steam which is made on the plasma spark from a Tesla Coil - Presumably if Sir9 used just 110 V, the really high voltage of the Tesla Coil should give me Big effects I am not sure about what size, shape and material I should use for the combustion chamber, and whether I can use multiple spark plugs safely. I'm planning to use a small 220v // 2,1kV microwave oven transormer for the coil just to keep things farely safe for the beginning and a turbine made of hard disk drives (about 16 plates) sealed in a plexi-glass chamber I have a lot more questions coming up every minute, need any help I can get - this is my first project of it's kind Thnx

Posted by skyw4lker 8 years ago

What are these electric components?

Hello guys I thought you could help me out with this a little bit. So I went to the dollar store looking for some. I'd like hack some to what I want, but first I need to know how it works! Um want to know what these things are on the board and what it is. So, I want to know what that black blob is on PCB and also that barrel shaped thing and why is the siren hooked up to that barrel. Thanks guys!

Posted by HavocRC 5 years ago

Electromagnetic induction questions.

OK, this is another one of those questions I should know, but don't.  Mainly because I have never done it before, I have a whim to build an electromagnetic launcher, something table-mounted with a range of around 3-5m (10-15 feet).  I'm not after launching nails through Coke cans. I have been browsing the web, and the designs all seem to be much more complicated than is really necessary for toy. The image below is a scan of my badly-drawn thoughts of how simple it should be. Have I got that right? I plan to use a bunch of capacitors harvested from dead electronics and connected in parallel.  Is there a recommended total capacitance for such a device? If launching a ring, must the ring slide over the ferrous core, or would there be enough umph to launch a ring balanced just past the end of the core?

Posted by Kiteman 7 years ago

Coil Gun

Hello! I have a question. I have been looking at making a Coil gun lately and i had an idea for a simple one. Just need to know if it would work. Basically: Battery-->Switch-->Diode-->Transformer-->Coil For my Coil I am using a coil from a Pinball Machine Flipper. Just An Idea for makers of a coil gun.

Posted by BionicB 2 years ago

making a coil gun help

When i make a coil with magnet wire,i have enamelled wire, do i have to sand the whole thing so the copper touches in the coil, or just the ends going to where im hooking it up? EDIT: i changed my title, because i have more questions about coil guns in general.

Posted by um0123 9 years ago

Infrared Detector

Hello Everyone  I'm making a coil gun and not sure how to make a infrared detector, so when my projectile is going down the barrel an infreared sensor will detect the projectile and activate the next coil. Thanks Everyone 

Posted by jackopiny 4 years ago

Can you insulate the primary coil of a Tesla coil?

Hello,    I am trying to build a tesla coil using a new design relating to a thesis paper I am working on. Due to spacial restraints my primary coil will be close to the secondary coil. I know I have seen others use insulated braided copper wire as their primary. I want to stay with 1/4" copper tubing if at all possible so I wanted to ask what affects it would have if I used heat shrink tubing on the copper tubing. I am aware the higher frequency voltage runs along the skin of the tubing since that is least resistive at that point. A for the power and caps I am using the following: three NSTs of which two are 15kv @ 30 miliamps and one 12kv @ 30 miliamps, 13 CD 2000VDC @ .15nf caps on each 15kv NST and 10 of the same caps on the 12kv NST. The spark gap is static for now.  I want to prevent arching as much as possible in the small space. Any advice is greatly appreciated. Some of the information relating to the thesis paper I cannot release due to a serious concern of being scooped before publication.  Thank you. :)

Posted by XsFacade 5 years ago

Coil winding :(

Someone please help me.. My hands are getting so tired from doing this!! Ok, My first attempt was simple, Put cardboard on sides of pen, hot glue it down, wind coil. Works great for 18 22 gauge. Got some new 14 gauge wire, well, its A LOT harder than I expected :( What can I do to make winding 40 ft of 14 gauge wire fast and easy? Is there any way I can get it on a power drill or at least something that will make turning it easy? After 2 neat layers on my pen and a lot of tight holding, the 3rd layer started pushing the lower layers away, making the coil get messy :(

Posted by Killa-X 9 years ago

Fluorescent tube starter question

I m really really curious about something you know the starter switch used in fluorescent tubes have a glass "bulb/tube" with a bimetalic strip i know what that is for but i dont understand what the coil beside the "bulb/tube" is for, and it feels like a coil but i think its more of a piece of metal wrapped i n plastic  

Posted by michaelgohjs 8 years ago

The "Truth" about Tesla?

These guys at www.lindsaybks.com/gallery/teslamyth/ttesla1.html say that Tesla didn't invent the Tesla Coil, radio, or AC power. Now, I'll admit that I didn't read all of the arguments completely. I did, however, read the Tesla Coil page in its entirety. One claim is that the Tesla Coil was predated by one Elihu Thomson's patent  "Method of and means for producing electric current" (number 500,630). This patent was filed in 1893 - while Tesla's earliest patent on the Tesla Coil, "System of Electric Lighting" (number 454,622) was filed in 1891. Nice try. They are definitely correct, however, in saying that many parts of Tesla's history has been overly-dramatized. For instance, there is a claim that Tesla's remote controlled boat used a primitive form of voice recognition to take spoken commands from his audience. Obviously, it didn't, and the patents show nothing of the like. Do the other claims on their website have any merit?

Posted by ElectricUmbrella 8 years ago

Disposable camera

I have a disposable camera and I am trying to decide what  to do with it.  I know many of you would suggest a stun gun but that does not interest me.  I like other high voltage stuff like teslacoils and stuff though.   Oh on a side note ...(you should find this funny)...after I took it apart I was looking at the way it worked and I saw the leads going to the flash.  I thought it was odd that it was not insulated and I accidentally touched it without the battery even being in (yes I know this does not matter).  So in other words I already know what it would feel like as a stun gun. Give me some ideas.  :)

Posted by jcaresheets 7 years ago

building a tesla coil

Is there any way to build a tesla coil?

Posted by cris1133 10 years ago

transformer power

I have been thinking about this for a long time now and in therory it works.  What im wordering is if you could make it work in place of the traditional power outlet.  Here it is, basicly there are just coils of wire inside of a transformer, on coil has say 240 turns of coil. Inside of this coil is another coil with 240 turns also.  So the voltige inside the first coil will be the same as the second coil.  And to half the voltige in the first coil.  If you had a plug that was just a cilender with a coil of wire inside and an outlet that was a hole in the wall with a coil inside.  I know a hole in the wall with 120 volts running through it sounds scary , but put a plastic cylinder inside the hole and vurtaly no shock hazerd. sorry for the spelling errors spell check was not working.

Posted by Laserman595 8 years ago

Coil Pump

Morning, all. We've just completed a quick proof of concept for a hand-powered coil pump. The pump lifted water through 3.1 meters of vertical height. Take a look at https://www.instructables.com/id/Coil-Pump/ comments and ideas for development appreciated Thanks!

Posted by chuangt2u 6 years ago

NST in tesla coil

Hey,I was thinking of making a Tesla coil for my science fair.The fact that NST (neon sign transformer) are a bit expensive, could anyone suggest me another way for its power supply other than using it

Posted by TERA FACTOR 4K 1 year ago

Use of transformers/ignition coils in a coil gun.

I've seen a couple of suggestions that an ignition coil, or a decent sizes transformer set up in a similar way, can be discharged into the coil of a coil gun, it the place of the usual capacitor bank. The main advantages seem to be a much faster recharge time, no need to create 200+V, and the availability of parts. I only have 540uF worth of capacitors at 200V, which should work for a small gun, but I have several large transformers, and a crate full of ignition coils. Does anyone know of any reasons why this would not work, or any modifications needed to make this setup work? Thanks in advance for any replies.

Posted by The Skinnerz 7 years ago

Inductor coils?

How would one go about determining the milihenries value of an inductor coil pulled from an amplifier, well different ones I have found. And living up to it's standards, google has found me no information but what an inductor coil is and it's function, but no information on how to find inductance rating.

Posted by Punkguyta 10 years ago

Magnetics software for designing magnet coils?

Dear Instructables, I need to design magnetic coils for a mattress that would emit a uniform magnetic field. Does anyone know of a basic program that would plot flux density over the coils? Preferably free! Thanks! Mike

Posted by Cburg1 6 years ago

Tesla Coils For Dummies

In my slideshow, not all of my uploaded images are showing! Please correct the mistake.

Posted by Xellers 9 years ago

Tesla coil and spud gun vs. Chrome

Google made this slick video to show off just how fast Chrome can render web pages. They compare it against a spud gun, a speaker filled with paint, and a Tesla coil. Check out the video to see the lovely slowed down footage and the second video to see how it was done. making of

Posted by fungus amungus 8 years ago

Is it possible to transfer data via magnetic induction between two coils separated by a steel plate ?

Is it possible to transfer data via magnetic induction between two coils separated by a thin steel plate of 2mm ? Or does the magnetic field gets diminished by the metal plate?

Posted by ZZamorin 2 years ago

Tesla Coil Capacitor help

I have just started building my first tesla coil. I am fairly experienced with electrical stuff and high voltage but I can't seem to get past building a homemade capacitor that will work. My first attempt I built eight Leyden jars in parallel that were constructed from glass canning jars and metal tape. Next I tried lining a 5-gallon bucket inside out with aluminum foil. Lastly I tried assembled a rolled capacitor with aluminum foil as the plates and wax paper as the dielectric (about 10 square feet). All of these have failed in a similar fashion; I hook them into the circuit and the spark gap wont fire. There is no arcing however the bucket and jar constructions made a faint noise similar to a capacitor charging. I have seen instructables and videos with only three or four Leyden jars in parallel and the spark gap is firing. I don't know whether the homemade ones just don’t have enough capacitance or if it is something else. If anybody has any input on the problem please help. P.S. I am using a 14kv 35ma 60hz oil burner ignition to power the coil below is a diagram of the circuit configuration

Posted by hmf444 8 years ago

Austrailian Electro!

An Australian site detailing almost 200 high voltage projects, and a few others.Some excellent photos, and lots of cool projects that could be put on here!!LINK

Posted by bumpus 10 years ago