Taser. Encyclopedia of radio electronics and electrical engineering

Encyclopedia of radio electronics and electrical engineering / Security and safety. Personal safety

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So, with that, it's time to paint, as I promised, aspects of the design of a high-voltage converter or just a stun gun. Let's start as we are already accustomed to;) that is, with the damaging factors. When a high-voltage discharge hits the skin, it is transmitted through the nervous system and reaches the synapses (nerve endings of the muscles) which causes them to SPASM, that is, a sharp contraction and the impossibility of brain control over them! Depending on your nervous system, it may take your brain 5 to 20 minutes to regain muscle control. In addition, during spasms, the muscles process sugar very quickly, so they quickly sober up from an electric shock (isn't it a good way? ;)), and subsequently there is weakness in the muscles up to the inability to hold a pen or stomp the clave)), loss of consciousness is also possible.

So how much power do we need to get a good kick? This question is not so easy to answer. we can calculate the output energy but we cannot say how much each individual person needs to knock him out!! Of course, this topic was studied a lot and came to the conclusion that in order to kill an average person, you need to apply 10 JOULS of energy to him !!

The usual shocker of those that are allowed in our country gives about 0.5 joules. Naturally, there can be no question of any instant effect !! to knock out an object for the time indicated above, you will have to hold the shocker on his skin for about 5 (!) seconds !! During this time, he will have time to smash your face SO much that it will not matter whether you knock him out in the end or not. As always, there are 2 ways to solve this problem: increasing the power of the device and direct (not spark) contact with the object. In the first case, you can accidentally hang a corpse on yourself if, for example, you run into a core (and there are such))) Well, the second method successfully uses a device called TASER. I think you heard about it or saw it in the movies, they like to show such things there, for those who are in the tank - this device shoots 2 electrodes into your skin on the wires through which the discharge occurs. Thus, the integrity of the skin is broken and closer contact is ensured. EXACTLY THEREFORE, the taser, with an energy of only 0.3 joules, is guaranteed to knock out ANY scumbag, whether it be a bespectacled man on a show-off or a hefty boar !!

What conclusions to draw? - it's up to you, it all depends on the purpose of the device ...

Now let's figure out how all the same to collect such crap on your knee. The stun gun consists of 3 main parts: a converter, a discharge shaper and an output circuit. The above stun gun circuit is the simplest design option that anyone can do without too much gimmick. Perhaps later, if I assemble a prototype of MEGAGAN, I will describe a more complex option not for beginners ...

So let's take a look at how the circuit works. A push-pull converter on transistors VT1, VT2 increases the battery voltage to the operating voltage of the capacitor (600-900 V, depending on the type of conder), then it is rectified by a diode and charges the conder. When the voltage on it reaches the discharge voltage of the spark gap E1, a discharge occurs that forms a current pulse in the I winding of the transformer T2, which rises to 30-100 kV depending on the discharge voltage and the number of turns of the secondary winding. Transformer T1 is wound on a ferrite ring 30*9*6. First, winding III is wound with wire 0.15 in 5 layers, then windings I and II containing 5 + 5 and 3 + 3 turns of wire 0.6, respectively, are wound on top of it. It is important that they are located at an angle of 90¦ relative to each other. T2 is wound on a frame with a core made of transformer plates with a width of at least 10 mm. The primary winding contains 20 turns of 0.6 wire directly on the core, and the secondary winding contains 2-4 thousand wires 0.1 on the frame.

Winding is carried out in layers, with a step equal to the diameter of the wire. After winding each layer, it must be insulated with fluoroplastic tape or several layers of capacitor paper. on the edge, you can use a wide electrical tape. After winding all the layers, a core with a primary winding is inserted into the frame, the entire structure is placed in a mold and filled with paraffin.

The spark gap E1 is an adjustable gap consisting of 2 steel plates arranged crosswise one above the other. When setting up, we adjust the gap until a spark forms in it (it all depends on the voltage on the capacitor). The arrester E2 is a "whisker" attached to the main electrodes, the distance between them is equal to or slightly less than the length of the spark that the shocker gives at the output. They are needed rather for a psychological effect, so they clearly demonstrate that the device works)))

Not every gopnik will be blown up when he sees an electric ARC in your hands in a couple of cm !!! Although the upper limit is not limited, it makes no sense to make the output voltage too high, this does not add to the impact force (it depends entirely on the energy of the conder). A spark is needed only for breaking through clothes, here 10-15 mm is enough for us. It is better to make contact electrodes DIRECT and SHARP so that they stick better)) In addition, this is an additional stabbing weapon. The shocker itself can be made both in the standard version in the form of a box and in the form of a baton, in which case it has one more advantage - it lengthens the arm in a fight.

Publication: cxem.net

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