How To Make A Stun Gun With A Capacitor

A Taser excursion also known as Stun Gun excursion is one not-lethal electric shock producing unit used to paralyze a person for a time being without causing any severe damage or injury. Information technology is a very useful device, particularly to immobilize an attacker.

Using and making of stun gun is restricted in most of the countries.

However, in the The states of America, some states allow the utilise of stun guns.

A stun gun is bachelor in multifariousness of styles similar lipstick stun guns, cellphone stun guns, stun batons, constabulary stun guns, pink ribbon stun guns and disguised stun guns.

Alert: The circuits explained below are designed to generate high voltages in the range of many kilo-volts, which may be capable of delivering a painful daze. Advisable caution is recommended while edifice these projects.

How information technology works?

Delight read the following pedagogy before amalgam:

Also known as a Taser gun this gadget generates substantial voltage pulses which tin disrupt muscle tissues and neurological system, forcing whatever individual who touches it in a condition of mental cliffhanger.

The unit of measurement may exist used confronting attacking beasts or dangerous intruders.

Be enlightened that, this gadget could be prohibited in your country.

This gadget may exist extremely unsafe on folks having cardiac issues, who may be using external electronic appliance (like peacemakers), since it can evangelize quite a chip of RF interference.

Don't attempt reckless behavior using this gadget, information technology is far from a plaything.

A Taser functions like ii-stage voltage converter. In the first stage, the high frequency switching transformer increases the battery voltage to several kV to charge the capacitor. Later on the capacitor is charged, it powers the second transformer by increasing the voltage to 10 – 50kV (approx.) with the repetition charge per unit of five-forty Hz (approx.).

Taser Types

There are basic types of Taser: Multiplier, Thyristor and spark gap. Multiplier Taser is made of one transformer having voltage of higher output and it runs on DC voltage.

This blazon of Taser also has loftier-voltage capacitors and diodes and it is for the capacitors that multiplier Taser makes loud sound.

The Thyristor type is the virtually efficient i. Here the voltage of the capacitor is not loftier (250 – 500 V approx.) and information technology functions with the aid two main components: resistive divider (neon lamp) and diac.

The spark gap guns on the other manus is the most cheapest and ineffective stun gun. As the name implies, information technology has spark gap to office and the voltage of the battery is charged with transistor converter.

Blueprint#1: How I made my Taser

Of the iii types of Tasers, I chose to go ahead with the Thyristor because of its effectiveness. I used MOSFET (Metal–Oxide–Semiconductor Field-Effect Transistor) to build the voltage converter. The principal reason to employ MOSFET is purely from the bespeak of efficiency.

In a push-pull converter which is by and large used in stun guns, the level reaches around 20% whereas in MOSFET the converter gives efficiency every bit much every bit 75% with the working frequency of 80-120 kHz.

I then used a gate thyristor for the second switch forth with four neon glow lamps with the ignition voltage of 95V and the pulse repetition charge per unit of 30 – fifty Hz.

Transformer Specifications

For inverter transformer, I preferred to use EE core based transformer keeping the eye column cantankerous-section of 20 – 25 mm2.

The air gap of 0.5mm thickness is place in the mid column. The main polarity is set to 2x12 turns of the diameter of the wire (0.4mm) while the secondary polarity is set to 700 turns of wire (0.1mm).

The secondary polarity is wounded in multiple isolated layers. The reason to isolate the layers is to avoid breaking the wire enamel under loftier voltage. At that place are two electrodes in a Taser gun. They look like a dart and are connected to the primary unit with a conductive wire.

Battery Specifications

Ane can power a stun gun with either half-dozen 1.5 Five cells or seven 1.2 V cells.

The best option is to take 2 cells or Li-pol or Li-ion connecting the serial. It should exist noted that this stun gun may depict current upto ane.5 amps when switched ON, which ways ordinary batteries might not work efficiently, and drain out quickly.

Written and Submitted By: Dhrubajyoti Biswas

Excursion Diagram

Design#ii: Using IC 555

The proposed stun gun circuit description may be understood every bit follows:

The 555 IC is continued as a astable to generate rectangular waves with variable frequency and duty cycle (encounter the potentiometers and diode).

This betoken is fed to a IRF840 Mosfet (not necessary to incorporate totem transistor network, equally frequency would be reduced, notwithstanding the IC has adequate current potential to swiftly accuse/discharge the gate).

Equally an culling for the mosfet a bipolar transistor works extremely well (add together a 100 ohm resistor between 555 and base of the transistor).

Proper BJT could be BU406, but additionally scaled-down BJT may be ok, take into account that it should exist able to cope with a minimum of 2A nonstop.

The inductive boost snubber isn't chosen for since the electrical power is lower which is practically completely adsorbed to charge the tank capacitor, furthermore because this gadget is battery powered we don't wish to disperse the ability on a resistor, nevertheless we need to produce the sparks.

With a snubbing system y'all are going to encounter decreased firing levels. Utilise A PUSHBUTTON SWITCH FOR Protection

Edifice the Transformer for the stun gun excursion:

This could be the actual deadening attribute. Considering it in retailers we have to construct these. Components essential: enamel copper wire (0.20 mm or 0.125 mm), ferrite rod, LDPE sheets (0.25 mm).

Coat the ferrite rod with a application of ldpe (polyethylene, as a substitute utilize electric insulating record) and stick it (or tape it) Position 200-250 winding on the ldpe (a lot more winding would do in instance the rod is more than 1'), an additional ldpe application, withal another 200-250 winding so forth to somewhen accept v-6 tiers (approx g-1400 turns all the same supplementary turns wouldn't negatively bear upon the functionality), then once again be cautious for internal arcing that could destroy it.

Insulate it in one case more than and set the chief winding, 15-20 turns of 1mm wire would exist simply fine, an excessive amount of winding will probably lead to lesser current and reduced fasten in T2 secondary on business relationship of decreased rise period, and too few is not going to saturate the core.

Go for MKP capacitors since they have minimal ESR and ESL (these are popular in tesla coils as mmc capacitors).

The Spark Gap

The spark opening could be straightforwardly a pair of crossed (although not touching) one mm spaced wires. It works like a voltage regulated switch, firing when the voltage is just nice to ionize the air betwixt them (transforming it to plasma with smaller resistance).

Remember that it could exist sensible exercise put information technology into a meaty plastic box and stuff with oil allowing bubbles away don't use motor oil or frying oil, rather organic mineral oil which includes nil water within.

Circuit Diagram

Parts Listing

• Resistors one/4 watt v% CFR
• 33k - 1no
• 1k - 1no
• Capacitors
• 0.01uF ceramic - 1no
• 0.1uF ceramic - 1no
• 0.01uF/400V metallized polyester - 8nos
• diodes 1N4007 - 8nos
• Mosfet - any N-channel general purpose mosfet with minimum ane amp current (ID)
• IC - IC 555
• Transformer - as explained in the article

Source: https://www.homemade-circuits.com/diy-taser-gun-circuit/

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