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Megashoker - a powerful stun gun
KAZUS.RU » Catalog of circuit diagrams » Security devices
The idea of creating a high-efficiency stun gun came to me after testing several similar industrial devices on myself. During
the tests, it turned out that they deprive the enemy of combat effectiveness only after 4 ... 8 seconds of exposure, and then
if you're lucky :) Needless to say, as a result of real use, such a shocker is likely to be in the back of the owner.
Infa:our legislation allows shockers with a power output of not more than 3 J / s (1 J / s = 1 W) for mere mortals, while
devices with power up to 10 W are allowed for air traffic controllers. But even 10 watts is not enough to effectively
neutralize the enemy; during experiments on volunteers, the Americans were convinced of the extreme inefficiency of
shockers with a power of 5 ... 7 W, and decided to create a device that would specifically extinguish the enemy. Such a
device was created by: "ADVANCED TASER M26" (one of the modifications of the AirTaser of the same company).
The device was created using EMD technology, or more simply has an increased output power. Specifically - 26 watts (as
they say, "feel the difference" :)). In general, there is another model of this device - M18, with a capacity of 18 watts. This is
due to the fact that the teaser is a remote shocker: when you press the trigger, two probes are fired from the cartridge
inserted into the front of the device, after which the wires are pulled. The probes do not fly parallel to each other, but diverge
at a small angle, due to which, at the optimal distance (2 ... 3 m), the distance between them becomes 20 ... 30 cm. It is
clear that if the probes get somewhere else, can get a cord. Therefore, they released a device of lower power.
At first I made stun guns similar in efficiency to industrial ones (out of ignorance :). But when I found out the information
above, I decided to develop a REAL stun gun worthy of the self-defense WEAPON. By the way, in addition to stun guns, there
are also PARALIZERS, but they do not steer at all, because they paralyze muscles only in the contact zone, and the effect is
not reached immediately, even at high power.
The output parameters of the MegaShoker are partially borrowed from the "ADVANCED TASER M26". According to reports,
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the device generates pulses with a repetition rate of 15 ... 18 Hz and an energy of 1.75 J at a voltage of 50 Kv (because the
lower the voltage, the higher the current at the same power). Since MegaShocker is still a contact device, and also out of
concern for her own health :), it was decided to make the pulse energy equal to 2 ... 2.4 J, and their repetition rate - 20 ... 30
Hz. This is at a voltage of 35 ... 50 kilovolts and a maximum distance between the electrodes (at least 10 cm).
The scheme, however, turned out to be somewhat complicated, but nonetheless:
Scheme: On the DA1 chip, a control generator (PWM controller) is assembled, on transistors Q1, Q2 and transformer T1 - a
voltage converter 12v -> 500v. When the capacitors C9 and C10 are charged up to 400 ... 500 volts, the threshold node on
the elements R13-R14-C11-D4-R15-SCR1 is triggered, and a current pulse passes through the primary winding T2, the
energy of which is calculated by the formula 1.2 (E is the energy (J), C - capacitance C9 + C10 (μF), U - voltage (V)). At U =
450v and C = 23 microfarads, the energy will be 2.33 J. The response threshold is set by R14. Capacitor C6 or C7
(depending on the position of switch S3) - limits the power of the device, otherwise it will tend to infinity, and the circuit will
burn.
Capacitor C6 provides maximum power ("MAX"), C7 - demonstration ("DEMO"), which allows you to admire the electric
discharge without risk of burning the device and / or landing the battery :) (when you turn on the "DEMO" mode, you must
also turn off S4). The capacitance C6 and C7 is calculated by the formula 1.1, or simply selected (for a power of 45 watts at
a frequency of 17 KHz, the capacitance will be about 0.02 μF). HL1 - a fluorescent lamp (LB4, LB6 or similar (C8 is
selected)), set up for disguise - so that the device looks like a tricked-out flashlight and does not cause suspicion among
various types of police officers and other personalities (or they can take it away, I had a case - they took it away similar
device). Essno, you can do without a lamp. Elements R5-C2 determine the frequency of the generator, with the indicated
values f = ~ 17KHz. Rizyuk R11 limits the output voltage, you can do without it at all - just attach the R16-C5 to the case.
Diode D1 protects the circuit from damage when connected in the wrong polarity. Fuse - just in case of fire protection (for
example: if the thread closes somewhere, it may tear the battery (there have been cases)).
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Now for the assembly of the device: you can assemble the entire device on a breadboard, but it is recommended to solder
the pulse circuit (C9-C10-R13-R14-C11-D4-R15-SCR1) by hinged installation, while the wires connecting the C9-C10, SCR1
and T2 should be as short as possible. The same applies to elements Q1, Q2, C4 and T1. Transformers T1 and T2 should be
located away from each other.
Capacitive sensor with sensitivity up
to 20cm
T1 is wound on two ring cores of M2000NM1 folded together, size K32 * 20 * 6. First, a winding of 3 - 320 turns of PEL 0.25
is wound, turn to turn. Windings 1 and 2 contain 8 turns of PEL 0.8 ... 1.0. They are wound simultaneously in two wires, the
turns should be evenly distributed along the magnetic circuit.
Capacitive relay with sensitivity up
to 50cm
T2 is wound on the core of transformer plates. The plates must be isolated from each other by a film (paper, tape, etc.). The
cross-sectional area of the core should be at least 450 square millimeters. First, winding 1 - 10 ... 15 turns of PEL wire 1,0 ...
1,2. Winding 2 contains 1000 ... 1500 turns and is wound in layers, turn to turn, each winding layer is insulated with several
layers of adhesive tape or a capacitor film (which can be obtained by breaking the smoothing conductor from the LDS of
the lamp. Then it is all filled with epoxy. Attention - the primary winding must be carefully isolate from the secondary!
Otherwise, it may turn out some kind of muck (the device may fail, or it may hammer with the current of the owner.
Moreover, it is not bad ...). Switch S1 is a fuse type (with THIS power, caution is not will hurt)
A distinctive feature of the circuit is that everyone can configure it for themselves (in the sense of an adversary :) The
output power of the device can be in the range of 30 to 75 watts (doing less than 30, IMHO, is impractical). And more than
75 is just bad, because with a further increase in power, the efficiency will not be much greater, and the risk will increase
significantly. Well, and the dimensions of the device will turn out a bit of that.). The output voltage is 35 ... 50 thousand
volts. The discharge frequency must be at least 18 ... 20 per second. Recommended parameters - 40 watts, single pulse
energy of 1.75 J at a voltage of 40Kv. (If you lower the voltage, you can reduce the pulse energy, the efficiency will remain
the same. 1.75J at 40Kv will be approximately 2.15J at 50Kv. But making a voltage less than 35Kv is impractical, because
then the skin resistance will interfere, i.e.
The main problem is the power source. I conducted experiments on the CA1222 battery. This battery is capable of giving
power of 80 watts for a while, but too large and heavy. You can use a smaller thread (see the link), now I'm thinking about it.
The dimensions and mass of the finished shocker are mainly determined by the size / weight of the power source.
Fire alarm smoke detector
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