How to Make a Handheld EMP Jammer

Or, "How to kill people with pacemakers". Seriously, there are a lot of bad uses for this which have nothing to do with phones.

This won't destroy your phone. Phones are extensively tested when it comes to both creating and withstanding EM interference. Best it could do - maybe - is crash one that is on the edge of its spec and you would probably have to get pretty close for that (fall off as the square (edited) of the distance).

Just to clarify after seeing several posts below. The magnetic and electric near fields fall off from 1&#x2F;r^3 to 1&#x2F;r^2, depending on component. The far fields fall off at 1&#x2F;r, hence the familiar 1&#x2F;r^2 for power (not amplitude).<p><a href="http:&#x2F;&#x2F;www.rfcafe.com&#x2F;references&#x2F;electrical&#x2F;near-far-field.htm" rel="nofollow">http:&#x2F;&#x2F;www.rfcafe.com&#x2F;references&#x2F;electrical&#x2F;near-far-field.h...</a><p>This thing operates in the near field, so it is pretty much useless past a distance of a coil diameter.

If you wanted to do this right, you&#x27;d match the impedance to the antennae impedance of a typical phone antennae.<p>This gets around the square rule, sort of, and you won&#x27;t need a suitcase full of batteries to power the thing.

Things like that were used to cheat slot machines <a href="http:&#x2F;&#x2F;empjammer.com&#x2F;how-a-emp-jammer-working" rel="nofollow">http:&#x2F;&#x2F;empjammer.com&#x2F;how-a-emp-jammer-working</a>

I&#x27;ve often thought about using a wok as a dish and putting a magnetron at the focus. High power directed microwaves would probably damage a lot of things. And made from kitchen hardware...

This seems like a device that is possible to cause a lithium battery fire because of the discharge rate.

What component is failing in order to cause that iphone&#x27;s screen to fade out in that way?

Why a second external coil? It isn&#x27;t aligned with the first coil and so the induced EMF is minimized (usually such coils are co-axial).

It doesn&#x27;t destroy phones, though. It resets them at max according to the video and tests.

Funny he can build an EMP generator but can&#x27;t properly bias an LED.

this reminds me of a coworker who tried to create a tiny DC motor with a battery, a magnet, and _non-enameled_ wire. yeah, that didn&#x27;t work out too well for him. I tried to explain why the wire needed to be enameled, but the cargo-cult science was strong with him.

How would the design need to be changed to make it possible to zap a phone from a distance of 1-10 meters?

Sweet! ... My EMP generator only works on Samsung Galaxy Note 7s!

&quot;<i>18650 lithium battery cell</i>&quot;<p>Or, possibly, explode into flaming death.