Stun Gun, Taser Gun Circuit

Tasers, also referred to as stuns give a powerful electric shock to stop an attacker.

The purpose of this shock is to be frightening and painful not deadly.

For a few seconds an attacker may lose control of their muscles due to an unexpected shock.

Till that you have time to run.

They may fall and become motionless for several minutes if the shock lasts longer than a second.

Yet again the main objective is to avoid serious harm instead of trying to stop them.

WARNING: If used improperly stun guns can be harmful as they are not toys

If at all possible difference should be ignored.

What is a Stun Gun, Taser Gun Circuit:

A stun gun or Taser gun circuit is an electronic device designed to unfit a person temporarily by delivering an electric shock.

While stun guns and Tasers have some differences both commonly use high voltage and low current electrical pulses to disrupt the normal functioning of muscles and nerves causing temporary difficulties

The working principle of stun gun circuit:

Parts List:

Stun guns function as voltage converters in two stages.

The voltage of the battery is raised to a higher voltage of several hundred volts to several kV in the first stage using the high frequency switching transformer.

A capacitor is being charged by this voltage.

The capacitor is discharged into the second pulse transformer once it has been charged raising the voltage to between 10 and 50kV.

The figures on the stun gun such as 100,000 or even 200,000V are made up a voltage of 200,000V would result in discharges longer than two meters.

The producers are only vying for the absurd voltages that the average population is unaware of.

The repetition rate ranges from 5 to 40 Hz.

Formula:

The below formula describes a circuit that potentially amplifies a voltage Vin with a scaling factor S.

V_out = (2V_in + 1.414)S

where,

• Vout represents the output voltage of the circuit.
• Vin represents the input voltage to the circuit.
• 2Vin term amplifies the input voltage by a factor of 2.
• 1.414 is likely a constant value representing the square root of 2 (written as √2), it is related to the circuits internal characteristics.
• S represents a scaling factor it is a multiplier that can be adjusted to influence the output voltage.

Different kinds of stun guns:

Thyristor SCR ones, spark gap ones and multiplier ones are the three essential kinds.

The least expensive models of stun guns spark gap, stun guns are extremely unreliable and ineffectual.

Spark gaps are used in place of thyristors.

Transistor converters are used to increase battery voltage.

A larger voltage a minimum of 1 kV needs to be generated to ignite the spark gap thus occasionally the secondary of the first voltage transformer has an auxiliary multiplier connected to it.

Upon charging the capacitor to a voltage high enough to ignite the spark gap it discharges into the pulse transformers capacitor.

This concept is similar to that of the Tesla coil.

Since a thyristor SCR is used in place of the spark gap these thyristor stun guns are more accurate and economical.

The capacitor has a voltage that is between only 250 to 500V.

The thyristor can be powered by a diac, neon light or resistive divider.

A diode and capacitor high voltage multiplier cascade is used together with multiplier stun guns powered by a single transformer with a higher output voltage.

What they create is a DC voltage.

The loudness of the sparks is triggered by the multiplier capacitors.

However, capacitors that come into direct touch with the skin discharge continuously rather than in pulses which can greatly lessen the impact.

Because of this it is essential to keep the electrodes away from the attackers body and only place them near to it.

My stun gun:

Thyristor SCR version is my choice.

Since the bipolar transistor childrens push pull converters used in commercial stun guns having an efficiency of only 20%, my choice was to build a voltage converter using a MOSFET.

My converter has an efficiency of around 75%.

Operating frequency ranges from 80 to 120 kHz.

I used four glow neon lights in series to drive a thyristor with a gate as a second stage switch the lamps combined ignition voltage is around 95V or 380V.

The repetition rate of a pulse is between 30 and 50 Hz.

The inverter transformer is mounted on a ferrite EE core with a cross section of 20 to 25 mm2 in the center column.

The air gap which is around 0.5 mm thick is located in the cores central column.

The diameter of the wire in the primary is 2 x 12 turns with a secondary having 700 turns at 0.1 mm.

The secondary is coiled in many discrete layers since at such voltages the wire enamel might fracture.

Observing secondary polarity is essential.

Making an HV pulse transformer with a voltage of several kV might be challenging.

The high voltage transformer is used to add xenon strobe light.

Two transformers were used with the primary connected in parallel and the secondary connected in series.

The stun guns two electrodes are known as test electrodes because they are closer to one another.

When there is no load, it releases a portion of it.

Discharge restricts the highest voltage and acts as a warning to potential attackers.

The primary electrodes looking forward is the second.

In comparison with the test ones there is a significant difference in distance between them.

The electricity enters the body of the attacker from those electrodes.

Six batteries of 1.5V or six to seven of 1.2V A stun pistol can be powered by NiCd or NiMH.

It is best to connect two Li-ion or Li-pol cells in sequence 2 x 3.6 – 3.7V.

Because it draws a high current of about 1.5A from the battery the stun gun cannot be operated with a typical 9V battery.

Important Note:

The purpose of the production instructions for this gadget is just to show the basic working concept.

The gadget is not meant to be used on humans or animals.

An output voltage may end in fatalities or major injuries.

Even after the battery has been disconnected and turned off capacitors can still hold charge.

Children do not own this gadget.

You use the stun gun at your own risk for all tests.

The creator of this website disclaims all liability for any injury you may get.

Everything you do is at your own risk and liability.

Safety Measures:

• Safety precautions and a good knowledge of high voltage electronics are necessary when working with stun gun circuits.
• Dangerous incidents might arise from even little errors.
• It is possible that experts who are aware of the dangers and need tools to manage them cautiously should create these devices.
• Disabling switches, current limiting resistors and adequate insulation are examples of safety features found in effective stun gun circuits that prevent harm and accidental discharge.

Conclusion:

If you are messing with stun gun or taser circuits like making or changing them just know you could get into big trouble with the law

So yes you should be really careful with safety first and do not be out here breaking any laws

References

Taser

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