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Author	Topic: Stun gun page updated!
The Juice Frequent Poster	posted November 14, 1999 11:50 AM I've come up with a different design that is more likely to work. I haven't tested it yet, but I've just found a source for the components I couldn't find before. It't at http://www.connect.to/juice cheers, Juice ------------------ Visit the Juice at http://www.connect.to/juice
Dr-D Frequent Poster	posted November 19, 1999 02:50 PM Ill build it once you get the final plans made/tested. I look forward to it though. I need to brush up on my eletronics before hand though... :\
Dr-D Frequent Poster	posted December 08, 1999 04:19 PM I looked at your plans, and I can understand them now after remembering the basics of electronics. Question, in the 2nd design, what is the purpose of all those extra capacitors and diodes? I found a nice site with plans for electronic circuits: http://bugin.hypermart.net/ It has a few things that would be good for remote detonation and spy listening from a distance. It even has a coil gun which looks to me like a mini rail gun.
Dr-D Frequent Poster	posted December 08, 1999 04:24 PM Forgot to mention that http://www.RadioShack.com has an online catalog with parts that aren't avalivble in their stores, some of them being high voltage capacitors. Check it out. Also, transformers appear to be quite expensive, how much does a new car ignition coil cost? anyone know?
Jolly Roger Frequent Poster	posted December 08, 1999 05:41 PM have you tried model aeroplane spark ignition coils these are about $20 (i think) The other good source is spark ignition for gas boilers for in the home. these are about the same price or you could pick one up second hand (a boiler that is!).
VeHeMT Frequent Poster	posted December 08, 1999 08:04 PM The coil gun on that page is pretty weak. Its original location is http://www.oz.net/~coilgun/home.htm Nonetheless, the electronics page has a good amount of information put in one place, tho it looks like the person is doing it for money more then anything else (but you dont have to click on the ads if you dont want to :] ).
Ho ju Moderator	posted December 08, 1999 10:07 PM although it wasn't a coil gun i have made a type of rail gun before me and my friend lined up a bunch of donut shaped magnets and lined them up and then took another magnet and shoved it up through the holes and it shot out the other end and went right through his sheet rock wall which was about 6 feet away. (it was cool) although this sounds much better) ------------------ -Knowledge is power, power leads to corruption, corruption is a crime, crime doesn't pay. So if you know to much you will go broke!!!
VeHeMT Frequent Poster	posted December 09, 1999 02:06 PM Ho Ju, believe me that coil gun is weak, even though the guy didnt use full voltage from his capacitors, he still was only able to launch his projectile 5 metres. Not 5 metres straight, but a total of 5 metres. Rail guns (electrically powered ones ) are more efficient then coil guns too.
Ho ju Moderator	posted December 09, 1999 03:14 PM i have seen specials on various channels about rail guns and i have looked up some info on them. The "real" (and by Real i mean used to launcg shit miles and miles and miles) are damn powerful. The only draw back is there size and the cost of power. (the army does not use them because they are too big and not cost efficient) ------------------ -Knowledge is power, power leads to corruption, corruption is a crime, crime doesn't pay. So if you know to much you will go broke!!!
The Juice Frequent Poster	posted December 12, 1999 04:17 PM To Dr-D, the diode/capacitor section is a voltage multiplier. Still not got around to building it (HV caps are expenive!). cheers, Juice
Dr-D Frequent Poster	posted December 14, 1999 07:22 PM Which design produces the best results? Design #1 is probably cheaper due to less diodes/capacitors. The HV caps at radio shack are only like 1.99 but that adds up after 10 or so of them.
Lice[4K] A New Voice	posted December 18, 1999 02:05 PM This question is for HoJu. When you said you and a friend lined up donut shaped magnets and pushed another through, how exactly did you do this??? Lice
Ho ju Moderator	posted December 18, 1999 08:21 PM i do not know the exact details. just fucked around with a shit load of donut shaped magnets. then we sent another pellet shaped one up through the middle and it went flying into his sheetrock wall. not sure how or why it happend (well i know why and how it did but not how to make what we made...) sorry bout that ------------------ -Knowledge is power, power leads to corruption, corruption is a crime, crime doesn't pay. So if you know to much you will go broke!!!
The Juice Frequent Poster	posted December 19, 1999 06:05 AM Was doing some more experiments recently, and me and a friend hooked up the first stage to a 15v supply using a car ignition coil as the transformer. The sparks were about 10mm long, and my friend got a couple of shocks. His arm was hurting for 1/2 hour afterwards! We connected up a second transformer (without a cap/diode), to no effect. I don't think the first design would work, unless a purpose built HV transformer was used. I've found HV caps at �0.50 each, with diodes being about the same price. After xmas, I'll probably make an order. cheers, Juice
Dr-D Frequent Poster	posted December 19, 1999 01:01 PM 15v supply? Be careful as that sounds to me like a transformer you plug into the wall to reduce the voltage down to 15v. If so that has a lot of current in it and can kill you. The purpose of a stun gun is very low current but high voltage. High current can fry your cells and stop your heart. Becareful! I wouldn't use anything but bateries as the initial source of power. I found a transformer from a florecent light ballance, it should be good for a few thousand volts. I could try to use it as a 2ndary transformer and see if it works, but I have to find another transformer first. My goal is to get at least a 1" spark. I will make a nice design for the case of the gun, and maybe have optional wire hookups to use it also as an electrical ignition source.
The Juice Frequent Poster	posted January 02, 2000 10:07 AM You're right, my friend was setting paper on fire with it 8-) The current was high, it was a variac (1-30v). Still not got the HV caps, but I haven't given up yet. cheers, Juice
madpie Frequent Poster	posted January 14, 2000 02:35 AM juice i love hi voltage i got a 240 to 10000 step up transformer this sucker will ark about 5cm ive seen ads for stun guns that kick out 80000 volts or more up to 200000 they say no chance of zapping your self when you do the maths this thing would throw an ark up to your elbow!! others say that current takes the shortest route true but if youve played with high voltage youl know it can do to things at once if its not at target theres no stopping it from running up your arm as well is there in quest of knowledge
Dr-D Frequent Poster	posted January 14, 2000 05:05 PM Where did you get that transformer? Sounds keen I'm not to sure about your question, but if insulated right then I think you should be safe unless you get your fingers near where the arching is. If the metal where the sparks go across is setup right it should also minimize this.
The Juice Frequent Poster	posted January 15, 2000 04:23 AM Commercial stun-guns will be tested to make sure that it won't do that under any circumstances, people are very quick to sue! BTW, treat that transformer with respect, if your running off anything but a battery the current will be enough to kill you :-( cheers, Juice
madpie Frequent Poster	posted January 15, 2000 07:04 PM i got the tranformer from a second hand shop it was intended as a neon sign power source cost about $20 aus threr are bigger ive heard in quest of knowledge
m3nth Frequent Poster	posted January 15, 2000 07:31 PM a note on high voltage and stun guns... arcs made through air using high voltage are determined not only by voltage but by the amount of power available, which means super high voltage with no current to back it up (low power) might not arc at all (it would only produce mild corona discharge maybe). also, for those of you trying to build one yourself, you can use a simple circuit to run off 12 volts (two lantern batteries) and four other parts you can get at radioshack. besides those four parts you also need a transformer which you can rip out of just about any tv. another thing is for the voltage multiplier (the diode/capacitor cascade) you can also rip those out of old tv's but usually only the bigger ones have them. any questions you have about this please ask. l8r... ~m3nth~
m3nth Frequent Poster	posted January 15, 2000 07:48 PM oh and another thing... if you are planning on making a stun gun that won't kill you or someone else, i would highly suggest you don't use a neon sign transformer. besides they are big and bulky compared to flyback transformers in a tv or car ignition coils. fun things to do with neon sign transformers are jacob's ladders and tesla coils but not a stun gun. dr-d... a 15 volt supply run into a car ignition coil will indeed produce high voltage low current that will make sparks without much danger. ignition coils are highly similar to flybacks (winding ratios) except flybacks have more inductance on the secondary (which nun of you care about). another thing you mentioned was a florescent light ballast--these are typically no good cause they only boost 120 mains up to about 300 or so volts... just enough to cause a continuous plasma breakdown of the gas inside the lightbulb. a note to all of you crazies who like to do new and different things... try this. get a AA batery with a connector and two wires so one wire is plus and one is minus. connect each wire to a sewing pin. have someone else stick a pin into each of your index fingers. ok just kidding. if the pins didn't jerk out (or if you did it to someone else) your heart would go into ventricular fibrilation, no oxygen would get to the brain and you would croak. from a AA battery. reason being your body is mostly salt water so the external resistance of your skin is all that keeps you from being killed by things like 120v mains etc. wet skin is 10% the resistance of dry skin (which is why you don't wanna drop electrical appliances into a bathtub) and of course using pins to completely bypass the skin leaves little resistance so there is lots of current that goes straight through the heart. l8r... ~m3nth~
Dr-D Frequent Poster	posted January 16, 2000 12:03 AM What about taser guns? those fire "bolts" or sharp metal darts on thin wires that peirce the skin and then allow the current to flow between the darts. I'm not sure if this is to a neon sign or florecent light ballance. All I know is that it is a bare transformer that is quite large in size with a lot of windings. It also only has 2 terminals for wires. I'm guessing somewhere on the body is where the other wire would be hooked up, but most of it is covered in laquer. I don't have much access to any spare parts, but I might go check a surplus electronic part shop sometime to see what they have.
madpie Frequent Poster	posted January 16, 2000 12:19 AM hey dr-d another good source of high voltage trasformers is bug zappers you know the ones with the bluelight unfortunatley also require 240 in some one said audio transformers work well regards madpie
VeHeMT Frequent Poster	posted January 16, 2000 01:09 AM Dr.D, go down to your local library (public) and run a search on Build Your Own Laser, Phaser, Ion Ray Gun & Other Working Space-Age Projects. The book was written by the guy who owns Information Unlimited back in the early 80's, nonetheless it has a fairly decent set of plans for making a taser that shoots a little block of wood with two straightened fishing hooks sticking out of it. The book is pretty interesting. Just watch out, there are adds for his company all over trying to sell you parts or kits for the items mentioned. ------------------ VeHeMT's Armoury

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