Picture of Handheld EMP device

EMPs (Electromagnetic pulse) are quite popular in the world of science fiction. Wouldn't it be cool to have one of your own? That's what I thought when I started building it.

I wanted to make an EMP which will be portable and which can be hidden under full sleeves( That's naughty!). If you have the right parts, you can build it in no time. If you don't, you're in trouble.

WARNING: Not for children under 15 yrs of age :D

Well seriously, If you get a shock it'll shake your spine. These capacitors are really powerful. So please be cautious while handling the circuit.


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Step 1: Step 1: The absolute necessity

Picture of Step 1: The absolute necessity

An old camera circuit, doesn't matter whether its disposable or not is absolutely necessary. If you don't have one, its not that tough to make one, but it'll take lots of time. An alternative way is to use the circuit of a zapper or a separately sold camera flash.

I used the circuit of a 15-yr old camera. Just had to take out the circuit out of it. The circuit runs on a 3V battery system.

The reason I used a normal camera circuit in place of disposable ones is that the capacitor in a normal camera is much more powerful than the disposable ones. If you use the circuit of a separate flash, its even much more powerful than the normal cameras.

Please be careful while taking out the circuit. The capacitor might still have stored charges.

Step 2: Step 2: The COIL

Picture of Step 2: The COIL

I had to make a coil which won't cover much area because I had to fix the coil on the palm of my hand. If the coil is too large I can get a nerve-racking shock just my slight movements of my palm.

So, I took out a coil from an old SMPS circuit. I had extra copper wires. So I used them to make a more powerful coil.

Make sure that the winding of the copper wire is tight. Otherwise it'll be ineffective.

tominjose26 days ago

does it works??

Have you tested to see how effective it is?
S0uraV_DAS (author)  jzuwala motts1 month ago
Nah I didn't...have some old digital watches and calculators...but didn't feel like destroying something of my own...I will however try it on someone else's instruments whenever I'll get a chance....:D
please give us a working video :) can it shutdown a phone ? or caculator :P
sives princepsp1 month ago
wouldn't it be a little hard to videotape it.....
McClay14 sives1 month ago

hey, good idea, you could use an old fashion hand cranked motion picture capturing device :D nothin to interfere with there :P

bmarconi1 month ago
jwalker sr does have a point, this is probably ineffective. Since all you really did was create and electro magnet that flashes on briefly. its range is almost certainly small enough that having your hand on the object would have little or no effect. due to the fact that the further you get from a magnet the faster is pull decreases. It is an exponential relationship. And even extremely large and powerful electro magnets have ranges that are very short.
jwalker sr.1 month ago

I commend you on your time & effort put into building and creating this ible but I do believe some facts of similar (with only a difference of magnitude) workings should be included in discussion.

The following is not intended to be given as an insult.

Honestly, I hardly think this would affect a camera recording a possible demo of the device, even at a couple feet away, let alone something you have your hand (the coil) immediately ontop of.

If you didn't already know, an atomic bomb will release a pretty destructive EMP when they explode. And even though it reaches a decent distance… you have to take into consideration the amount of energy involved in the explosion. I could be wrong but without googling it I believe I heard this EMP's range extends several miles. Although, with that said, just think of the ratio of energy involved to the range of the resulting EMP. Then think of 3vs and a couple hundred micro-farads / volts (300-400uf/v at most) cap being dumped into a rather small coil/transformer.

If it were this easy, we'd be seeing a whole lot of reports of cars, [security] cameras, stores, phones, tv's, houses, etc getting "mysteriously" destroyed.

••Also it would be most beneficial if the ible being provided was tested/proven, and/or a demo recording included, to work before being posted and eventually causing disappointment.••

To make an update, after the replies made to my original comment and searching some info it appears this ible device would more or less just create what is commonly called "interference" and is, by IEEE-SA (eg. Electrical Engineering Standards), taken into consideration when developing most electrical hardware.

In short, the interference generated from this device would already be protected against in your everyday electronic devices.

"If you didn't already know, an atomic bomb will release a pretty destructive EMP when they explode"
They release a pretty destructive everything lol.
I would exspect that their biggest "emp" like effect, is probably the fact that everything (electronic or not) within range is destroyed...

This is true hehe. I was hoping the "other" destructive force was universally known :) and was just singling out the secondary effect of the EMP.

The range of an atomic blast's EMP depends on the altitude the explosion occurs. The higher the altitude the longer the range. A nuclear device explosion at about 40Km altitude would generate an EMP that would affect the entire USA.

Thank you for that tidbit of info. And yeah, I should have been using the term (thermo)nuclear rather than 'atomic'.

Off topic: Pretty scary stuff to think about... I've heard some horror stories about how effective our (US) missile defense is; or lack-thereof.

lkrewson1 month ago
Couldn't you test its range by setting out cheap flashlights at different ranges and then turning on the emp and see which flashlight s mess up
sclark451 month ago
to film it in use try a good video camera shoot at a 45 degree angle from behind you ....
most video cameras will zoom in a long ways and use a rental camera. ..if it dies go return it walk in all pissed that it quit and you didn't get to shoot your friends wedding. then ask for a refund of the rental charges. don't feel guilty about it. ..
S0uraV_DAS (author)  sclark451 month ago
Good advice !!! :D
S0uraV_DAS (author) 1 month ago

Guys, please understand!!! Making a video demo is almost would damage my phone/camera...

QEDyesca1 month ago

When you can, please post a follow-up video of the device in action.

S0uraV_DAS (author)  QEDyesca1 month ago

I can't make a video of the device in action, it would damage my phone/camera...

nqtronix1 month ago

You definitely want to isolate all metal parts such as the contacts of the capacitor to reduce the risk of an electric shock. This can be either done with some shrink tubing or hotglue.

S0uraV_DAS (author)  nqtronix1 month ago
Yea I know....Thats why I have used insulating tape...for the capacitor contacts...I don't have hotglue...It really is a risk...

Well, then it's time to get a hotglue gun ;)

"If Apple can use hot glue, well so can I!" - Ben Heck

lean041 month ago

you should meassure the range of the EMP before anything, be aware that an EMP could shut down SOMEONE´s peacemaker thus probably ending bad (at least) or damage any other important device (traffic lights, car electronics..). That being said, awesome project.