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how do you make an EMP? Answered

how can you make a little EMP, only strong enough to disrupt (not destroy) electronics? i would be nice if re-usable, or pocket size.

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solidacid
solidacid

Best Answer 11 years ago

I have made mini EMP's before..

grab a tube of some sort(preferably not metal) wrap copper wire from one end to the other and connects the ends of the wire.
put a firecracker in the middle of the tube(possibly with a fuse sticking out of a small hole) and put a strong neodymium magnet on each side of the firecracker.
light it and run
but be careful pieces of the tube can come flying at you or you could get hit by the magnets flying out of the tube's ends

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TimB381
TimB381

2 years ago

lf you take two magnets and put like poles together they will repel each other.

Question, can magnets be used to deflect an emp?

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dbiswas6
dbiswas6

5 years ago

HEY everone....see i know how to make and emp...but the main dumb problem is that i. Am using a 400wv, 1000uf capacitor instead the disposable one and so cant charge that capacitor.....It would be DAMN NICE if someone told me how the heck should i create a CHARGIN CIRCUIT for the 400wv, 1000uf capacitor........THANK YOU FOR YOUR TIME.

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takn37
takn37

7 years ago

what about an emp that can destroy a calculator, r/c car or helic or smthn

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Master builder224
Master builder224

8 years ago

I make pocket ones that disrupt and not fry I used it in class on a projector nonstop(i sit next to the cart)and the lesson was cancelled HOW TO MAKE get camera flash thingys and a AA u will need 6 electrolytic capacitors and a button.keep them in a case(i use altoid cases)hook them up and hook a coil on the case exterior. Once the capacitors charge discharge them quickly to send the blast.

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panick
panick

Answer 7 years ago

could you send me the instructions

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ForceReaper5
ForceReaper5

Answer 7 years ago

can you please send me pics and detailed instructions on how to do it

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mph121
mph121

Answer 7 years ago

could you send me some pics too?

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Empguy
Empguy

Answer 7 years ago

Could you send me the full details with a picture

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usernamesees
usernamesees

Answer 7 years ago

Can you mail me the full details as well?

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jmamonong
jmamonong

Answer 7 years ago

sir, can you mail me with full details and pic?

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VvVenom283
VvVenom283

Answer 7 years ago

Hey im really interested in the emp can u send me pics on how to make it at Exman283@gmail.com

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Daxuto
Daxuto

Answer 8 years ago

I have built a few coils for various purposes, would you have any idea which may be best?
-A short (3/4"), multilayered coil over an old magnet wire spool
-A 4 or 5 inch single layer coil
-A 4 or 5 inch multilayer coil
-A short single layer coil on a magnet wire spool

I wanna get the best metaphorical "bang" for my work :3

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TheMike25
TheMike25

Answer 8 years ago

From what I understand, it's really "coil density" that does the trick. The multilayer coil that is 4/5 inch is bigger, and it has a higher density, so I think that'll do it. Of course, if you are decent at soldering and you have a bunch of electronics to test it on, then you can do some tests at different ranges with each.

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SetHarth01
SetHarth01

Answer 8 years ago

This sounds really great for making small EMPs. Ive got most of the stuff needed, but I would appreciate it if you could elaborate exactly how it all fits together in the altoid case.

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yveg
yveg

7 years ago

I would like to have a very small emp device. I am willing to pay for all the expenses. Please let me know if someone can help.

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joshuarodgers
joshuarodgers

8 years ago

ok I know this is cheating but if you have not been here yet check out this site http://www.amazing1.com/emp.htm it has kits and everything

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peanutthegreat
peanutthegreat

10 years ago

You can take a disposable camera f;ash, or link several in series, and attach this to an electromagnetic coil. You could probaby use very fine wire to make the coil. Such a device will probably wreck a phone or something at close range. You can also use them to short out rfid tags in passports and such.
This method is even fairly safe! No explosives...

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eremyja
eremyja

Answer 8 years ago

To increase the capacitance you have to connect them in series.
Capacitors in series are added together using this formula:

capacitance formula.png
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eremyja
eremyja

Answer 8 years ago

To increase the capacitance you have to connect them in *parallel*.
in series use the above formula

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dauby
dauby

Answer 10 years ago

You lost me with the whole camera flash thing. how is that going to send out a pulse?

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peanutthegreat
peanutthegreat

Answer 10 years ago

The electricity from the flash capacitor will go through the coil, creating an electromagnetic pulse. Depending on your coil size the effect probably wont be very powerful or large, but as stated above it could wreck a modern digital device at close range.

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dsomers
dsomers

Answer 9 years ago

could it break a spiderwire?

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charchar97
charchar97

Answer 9 years ago

ok well this sounds like something i wanna do! haha well how smal should the wire be and how big should the coil be... or like what? i have some 30 gauge enamel-covered solid-conductor copper wire wud that work??

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Tobor 2.0
Tobor 2.0

Answer 10 years ago

wow your Idea is a lot like mine I'm also using disposable camera flash circuits but I'm having troble

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the_mad_man
the_mad_man

12 years ago

large HV (~240V) capacitor bank (bigger the better) and a huge coil, once again, bigger the better (to a point) and air core it if you want range, iron/ferrite core it for short range but more devestatating

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baldou16
baldou16

Answer 9 years ago

so basically an electro magnet type setup, but with all the charge being released at once, an on a larger voltage, as opposed to a steady 9v current for an electromagnet?

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necropolian
necropolian

Answer 12 years ago

i said little, nuclear weaponry creates an EMP, but the blast destroys everything anyway.

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baldou16
baldou16

Answer 9 years ago

unless its detonated in the high atmosphere or space, where the blast is useless, but the EM waves continue on, gamma being the shortest wavelength therefor oing farthest... i think xD

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Jonny Katana
Jonny Katana

12 years ago

1. Get very far away, wrap your iPod and phone in aluminum foil. In a ridiculously short period of time: 2. Connect a very large capacitor bank to a thick copper coil housed in an electrically isolated conductive cylinder. 3. Detonate a high-explosive core (over which the coil fits like a sleeve) at one end. The high current passing through the copper coil creates a strong magnetic field, the moving explosion in the middle of the coil shorts the coil against the housing. This moving short circuit in the coil compresses the aforementioned magnetic field, eventually leading to the much desired electromagnetic pulse. As for finding detailed assembly instructions, I wish you the best of luck. (Info from howstuffworks.com)

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Xmas50
Xmas50

Answer 10 years ago

You don't have any idea what you're talking about, do you?

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Jonny Katana
Jonny Katana

Answer 9 years ago

Did I miss the part where you gave a more accurate answer?

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Xmas50
Xmas50

Answer 9 years ago

No, that part never existed, except in my head. A long time ago.

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DavidCDean
DavidCDean

Answer 9 years ago

He got it a bit wrong, but he's talking about a HERF gun.

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necropolian
necropolian

Answer 12 years ago

well, i have the opportunity, the chance, the money, the guts, and everything to buy an Ipod an a phone, but i don't have/want them. i've aready searched howstuffworks, but this is still the most useful. thanks.

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Flash635
Flash635

11 years ago

You get a magnetron out of a microwave, but I don't remember how to make it directional nor how to stop it microwaving your guts. I know it's possible though.

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Xmas50
Xmas50

Answer 9 years ago

Lead cone

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necropolian
necropolian

Answer 11 years ago

well, to stop it from microwaving your 'genitals', just make underpants out of aluminium foil. but indeed, i can use a microwave....

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squiggas21
squiggas21

10 years ago

hey all,
i've been wanting to make an EMP with a friend for a while. i'm somewhat fail at technology, and i was wondering if one of you brains could give me a "How to make an EMP for dummies" sorta thing.

i've done some research and looked at clips on youtube and stuff, but i can't really make heads or tails of it all.

any help at all would be fantasitc,
cheers =)

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sparkynf12
sparkynf12

Answer 10 years ago

@ squiggas21 yeah sure i saw ur post, all an electromagnetic pulse (EMP) really IS,is a Dinosuare VCR or cassette eraser hooked up to a cap bank in other words its just a magnet with a amplifyed reversed polarity. The reason it fryes electronics is due to the magnetic field it generates. Just like if you take a credit card and place it next to a speaker, the magnet within the speaker disrupts the magnetic frequency if you will say on the credit cards barcode. This is a rough scematic of what it should look like
[_-_-_-_]
\ /_-----------------------+ -
----p------ 000000----(\)----24vlts

p=switch ----=wire 0=capasitors (/) charging switch [____]=eraser -=copper coductive wire within \ /=leads +-=battery I strongly advise u not to play around with this device this is a capital punishment under chapter 14 section 35
"any officer qualified to serve criminal process may arrest without a warrant " =(...( *i have no resposibility for how u use it, educational purposes only* )

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skoolerror2
skoolerror2

Answer 10 years ago

dued thanks for the idar it is perfit for my book

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sparkynf12
sparkynf12

Answer 10 years ago

ur welcome

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Gen. Ammo
Gen. Ammo

10 years ago

I'm guessing you can get an mini-transformer like the ones in plugs and put it in lots of Volts so you can use like, I dunno, like four 9V batteries or something and when the current goes up (I'm assuming you know how to modify transformers) the strength increases. You can try to get 4 nails (2x2) where one nail is facing the opposite way of the one above and next to it and wrap up as much copper wire as possible (they have to be insulated) and then fire it up, also to fry it you have to be close to the electrical equipment and move so the target produces electricity due to the electromagnetic field you made cos of the batteries.
If this doesn't work there is a simple thing... that is either:
1) Nuke the city or 2) make a random machine that consumes as much energy and f**k up the neighbourhood and if that doesn't work just 3) Go to the toilet and s**t yourself.

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necropolian
necropolian

12 years ago

there are people who made a special device in large numbers around here, around the WK football. it wasn't an EMP, but it shot out every signal capable of shutting a television of. for around 25 €, you can put every television out, and watch the 'probably outrageous' reactions!

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jtobako
jtobako

Answer 12 years ago

That's probably a 'tv-b-gone', which is just a remote control putting out an 'off' signal. There's a couple of instructables on how to make or boost them. An EMP is a very strong radio pulse that induces an electrical charge on any long conductor (like an antenna or power cord). You can see something similar when you run an old blender or vacuum and you get static on the TV or radio. It's a result of the arcing in the brushes. Unless you have access to gigawatts of electricity, you aren't going to get enough power transferred to cause any damage or effect.