A TASER is a conducted energy device (CED) primarily used to incapacitate people, allowing them to be approached and handled in an unresisting and thus less-lethal manner. The brand name product is sold by Axon, formerly TASER International,[1] the TASER fires two small barbed darts intended to puncture the skin and remain attached to the target until removed by the user of the TASER device. The deployment of a taser typically reaches a speed of 55 m/s (120 mph; 200 km/h) and a range extending from 4.5 m (15 ft) for non-Law Enforcement Tasers to 10.5 m (34 ft) for Law Enforcement Tasers. The darts are connected to the main unit by thin wires that achieve a high dielectric strength and durability given the extreme high-voltage, (e.g., 50,000 volts, or 2000 volts under load). The wire core often being copper wire modulates electric current designed to disrupt voluntary control of muscles, causing "neuromuscular incapacitation (NMI)." When successfully used, the target is said to have been "tased". The effects of a taser may only be localized pain or strong involuntary long muscle contractions, based on the mode (tasing frequency when operated, and environmental factors) of use and connectivity of the darts.[2]

The TASER X2 device is a two-shot TASER CEW with a warning arc and dual lasers.[38] The warning arc is a function the officer can utilize with the push of a button to intimidate an aggressor, warn a potential assailant, and gain compliance of a suspect without having to deploy the loaded cartridges. During the warning arc mode, the TASER CEW will display an arc of electricity at the front of the device.[39]

Under the Firearms Act of 1925, tasers, pepper spray and stun guns are illegal to possess or purchase in Ireland, even with a valid firearms certificate.[83][84]

Principle ofarc weldingPDF

Excited delirium is thought to involve delirium, psychomotor agitation, anxiety, hallucinations, speech disturbances, disorientation, violent and bizarre behavior, insensitivity to pain, elevated body temperature, and increased strength.[57][61] Excited delirium is associated with sudden death (usually via cardiac or respiratory arrest), particularly following the use of physical control measures, including police restraint and TASER devices.[57][61] Excited delirium is most commonly diagnosed in male subjects with a history of serious mental illness or acute or chronic drug abuse, particularly stimulant drugs such as cocaine.[57][62] Alcohol withdrawal or head trauma may also contribute to the condition.[63]

In addition to the coding given above, all electrodes must conform to the test requirements of IS: 814 (part I and II) – 1974. Each packet of electrodes must have a marking indicating coding and specification.

In 2004, the parents of a 6-year-old boy in Miami sued the Miami-Dade County Police department for firing a Taser device at their child.[96] The police said the boy was threatening to injure his own leg with a shard of glass, and said that using the device was the safest option to prevent the boy from injuring himself. The boy's mother told CNN that the three officers involved probably found it easier not to reason with her child.[96] In the same county two weeks later, a 12-year-old girl skipping school and drinking alcohol was tased while she was running from police. The Miami-Dade County Police reported that the girl had started to run into traffic and that the Taser device was deployed to stop her from being hit by cars or causing an automobile accident.[96] In March 2008, an 11-year-old girl was subdued with a Taser device.[97] In March 2009, a 15-year-old boy in Michigan died from alcohol-induced excited delirium coupled with application of an electromuscular disruption device.[98][99]

Hence, the welds obtained by these electrodes are of lower strength, lower ductility and lower resistance to corrosion. They find limited use in minor repair and poor quality work. They used to weld wrought iron and mild steel. In modern practice they are not used or rarely used. They are also known as plain electrodes.

The cleaning of the surface should be carried out mechanically by wire brush or power wire wheel, and then chemically by carbon tetrachloride. Proper shape to the edges of the plate should be given to produce a proper joint.

There are a number of cartridges designated by range, with the maximum at 35 feet (11 m).[22] Cartridges available to non-law enforcement consumers are limited to 15 feet (4.6 m).[27] Practically speaking, police officers must generally be within 15 to 25 feet (4.6 to 7.6 m) to use a Taser, though the X26's probes can travel as far as 35 feet.[28][23]

The function of wire brush is to remove the slag particles after chipping by chipping hammer. Sometimes, if available a power wire wheel is used in place manual wire brush.

Jack Cover, a NASA researcher, began developing the first Taser in 1969.[9] By 1974, Cover had completed the device, which he named TASER, using a loose acronym of the title of the book Tom Swift and His Electric Rifle, a book written by the Stratemeyer Syndicate under the pseudonym Victor Appleton and featuring Cover's childhood hero, Tom Swift.[10][11] The name made sense, given that the Taser delivers an electric shock. This was also done on the pattern of laser, as both a Taser and a laser fire a beam at an object.

The six digit code number indicated the performance characteristics and mechanical properties of the weld metal deposit.

In reverse polarity, about 67% of heat is liberated at the electrode (positive terminal) and 33% on the work (negative terminal).

Select the proper current and polarity. The spot are marked by the arc at the places where welding is to be done. The welding is done by making contact of the electrode with the work and then separating the electrode to a proper distance to produce an arc.

Excited delirium is not found in the current version of the Diagnostic and Statistical Manual of Mental Disorders. The term excited delirium was accepted by the National Association of Medical Examiners and the American College of Emergency Physicians, who argued in a 2009 white paper that excited delirium may be described by several codes within the ICD-9.[57] In 2017, investigative reporters from Reuters reported that three of the 19 members of the 2009 task force were paid consultants for Axon, the manufacturer of Tasers.[69][70]

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Since April 2008, tasers can be legally purchased by persons 18 and older, but can only be carried by persons with a firearm carry permit (Waffenschein), which is only issued under very restricted conditions.

The function of chipping hammer is to remove the slag after the weld metal has solidified. It has chisel shape and is pointed at one end.

It is used when the thickness of the plates is more than 16mm and where welding can be performed on both sides of the plate. Both the edges are bevelled to form a double-V, as shown in Fig. 7.17 (c).

The reverse polarity is used where less heat is required at the work as in case of thin sheet metal weld. The non-ferrous metals such as aluminum, brass, and bronze nickel are welded with reverse polarity.

Tasers have a long history of use to prevent the escape of dangerous suspects without needing to resort to lethal force, or used to capture suspects without risking serious injuries to both the officer and the suspect. US patent by Kunio Shimizu titled "Arrest device" filed in 1966 describes an electrical discharge gun with a projectile connected to a wire with a pair of electrode needles for skin attachment.[8]

Tasers are used to immobilize wildlife for research, relocation, or treatment. Since they are classified as a form of torture, it is more common to use tranquilizer darts.[106]

Under the Law of the People's Republic of China on the Control of Firearms and Public Security Punishment Law, tasers are prohibited for civilian ownership in China without an application for a state licence. A weapons permit is required to purchase and own a taser.[80]

An open circuit voltage (for striking of arc) in case of D.C. welding is 60 to 80 volts while a closed circuit voltage (for maintaining the arc) is 15 to 25 volts.

4 types ofarc welding

As of September 30, 2024, Axon has three main models of TASER conducted electrical weapons (CEWs) available for law enforcement use but not necessarily civilian use. Civilians, however, have access to the TASER Pulse, which runs at a 30 second cycle once fired to allow the victim the opportunity to escape.

Tasers are classified as weapons under Federal Law No. 3 of 2009, and therefore require a valid license to own or import.[90]

These are sometimes also called as conventional electrodes. A coating (thin layer) of flux material is applied all-round the welding rod, and hence termed as coated electrode. The flux, during welding, provides a shielding to the molten metal zone from the atmospheric oxygen and nitrogen. This flux also prevents formation of oxides and nitrides. Flux chemically react with the oxides present in the metal and forms a low melting temperature fusible slag.

Carbon and graphite electrodes can be used only for D.C. welding, while tungston electrodes can be used for both D.C. and A.C. welding. The filler material is added separately when these types of electrodes are used. Since, the electrodes do not consumed, the arc obtained is stable.

The D.C. welding machine obtains their power from an A.C. motor or diesel/petrol generator or from a solid state rectifier.

Electric arc weldingmachine

On the other hand, when the work is made negative and electrode as positive then polarity is known as reverse or negative polarity, as shown in Fig. 7.16 (b).

The fourth, fifth and sixth digits of the code number represents tensile strength, maximum yield stress and percentage elongation with impact value.

(vii) The electrode has a minimum percentage elongation in tensile test of deposited metal is 20 percent on a gauge length of 5.65 √So and average impact test value of deposited metal is 47J at 27°C. [411].

First of all, metal pieces to be weld are thoroughly cleaned to remove the dust, dirt, grease, oil, etc. Then the work piece should be firmly held in suitable fixtures. Insert a suitable electrode in the electrode holder at an angle of 60 to 80° with the work piece.

The deoxidising ingredients are graphite, powdered aluminum, wood flour, calcium carbonate, starch, cellulose, dolomite, etc.

Electric arc weldingPDF

A report from a meeting of the United Nations Committee Against Torture states that "The Committee was worried that the use of TASER X26 weapons, provoking extreme pain, constituted a form of torture, and that in certain cases it could also cause death, as shown by several reliable studies and by certain cases that had happened after practical use."[107][108] Amnesty International has also raised extensive concerns about the use of other electro-shock devices by American police and in American prisons, as they can be (and according to Amnesty International, sometimes are) used to inflict cruel pain on individuals.

Stun guns and tasers made in Russia can be purchased for self-defense without special permission, however, under the Federal Law No. 150 "On Weapons" of the Russian Federation it's illegal to import and subsequent sale of any foreign stun devices or tasers into the country. The ban has been in place since the first version of the law was approved in 1996.[88][89]

A TASER device may provide a safety benefit to police officers.[33] The use of a TASER device has a greater deployment range than batons, pepper spray, or empty hand techniques. This allows police to maintain a greater distance. A 2008 study of use-of-force incidents by the Calgary Police Service conducted by the Canadian Police Research Centre found that the use of the TASER device resulted in fewer injuries than the use of batons or empty hand techniques. The study found that only pepper spray was a safer intervention option.[34]

The earliest known case of a taser being used on a child was on June 10, 1991, when one was used to incapacitate an 11-year-old girl in order to kidnap her. According to Jaycee Dugard, whenever she tried to escape, her kidnapper threatened to use the taser again.[95]

Tasers are prohibited for civilian ownership in Australia in every state and territory. A weapons permit is required to purchase and own a taser.[71][72][73][74][75][76][77]

Electric arc weldingprocess

The A.C. welding machine has a step down transformer which receives current from main A.C. supply. This transformer step down the voltage from 220 V-440V to normal open circuit voltage of 80 to 100 volts. The current range available up to 400 amperes in the steps of 50 ampere.

When the arc is obtained, intense heat so produced, melts the work below the arc, and forming a molten metal pool. A small depression is formed in the work and the molten metal is deposited around the edge of this depression. It is called arc crator. The slag is brushed off easily after the joint has cooled. After welding is over, the electrode holder should be taken out quickly to break the arc and the supply of current is switched off.

The slag forming ingredients are silicon oxide (Sio2), Manganese oxide (Mno2), iron oxide (FeO), asbestos, mica, etc. In some cases, aluminum oxide (Al2o3) is also used but it makes the arc less stable.

Only members of law enforcement are allowed to own a taser legally.[78] However, according to an article by The Globe and Mail, many Canadians illegally purchase tasers from the US, where they are legal.[79]

Some of the deaths associated with TASER devices have been blamed on excited delirium, a controversial medical diagnosis that supposedly involves extreme agitation and aggressiveness. It has typically been diagnosed postmortem in young adult black males who were physically restrained by law enforcement at the time of death. The diagnosis was supported by the American College of Emergency Physicians from 2009[57] to 2023[58][59] and the National Association of Medical Examiners until 2023.[60]

The alloying elements used for improvement of weld strength are vanadium cobalt, molybdenum, aluminum, chromium, nickel, zirconium, tungsten, etc.

Amnesty International has expressed particular concern about Drive Stun, noting that "the potential to use TASERs in drive-stun mode—where they are used as 'pain compliance' tools when individuals are already effectively in custody—and the capacity to inflict multiple and prolonged shocks, renders the weapons inherently open to abuse."[56]

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What is arc welding

Some TASER device models, particularly those used by police departments, also have a "Drive Stun" capability, where the TASER device is held against the target without firing the projectiles, and is intended to cause pain without incapacitating the target. "Drive Stun" is "the process of using the EMD (Electro Muscular Disruption) weapon as a pain compliance technique. This is done by activating the TASER [device] and placing it against an individual's body. This can be done without an air cartridge in place or after an air cartridge has been deployed."[50]

(ii) The electrode covering has an appreciable amount of titanium with basic materials and will produce fluid slag. [3].

The functions of protective clothings used are to protect the hands and clothes of the welder from the heat, spark, ultraviolet and infrared rays. Protective clothing used are leather apron, cap, leather hand gloves, leather sleeves, etc. The high ankle leather shoes must be wear by the welder.

The alternating current for arc is obtained from a step down transformer. The transformer receives current from the main supply at 220 to 440 volts and step down to required voltage i.e., 80 to 100 volts. The direct current for arc is usually obtained from a generator driven by either an electric motor, or patrol or diesel engine.

Police claim that the use of TASER conducted energy weapons on smaller subjects and elderly subjects is safer than alternative methods of subduing suspects, alleging that striking them or falling on them will cause much more injury than a TASER device, because the device is designed to only cause the contraction of muscles. Critics counter that TASER devices may interact with pre-existing medical complications such as medications, and may even contribute to someone's death as a result. Critics also suggest that using a Taser conducted electrical weapon on a minor, particularly a young child, is effectively cruel and abusive punishment, or unnecessary.[100][101][102][103]

These are available in the form of continuous wire or rods. They must be used only with straight polarity in D.C. welding. Bare electrodes do not provide any shielding to the molten metal pool from atmospheric oxygen and nitrogen.

2. It produces low melting temperature slag, which dissolves the impurities present in the metal like oxides and nitrides, and floats on the surface of the weld pool.

As with all less-lethal weapons, use of the TASER system is never risk-free. Sharp metal projectiles and electricity are in use, so misuse or abuse of the weapon increases the likelihood that serious injury or death may occur. In addition, the manufacturer has identified other risk factors that may increase the risks of use. Children, pregnant women, the elderly, and very thin individuals are considered at higher risk. Persons with known medical problems, such as heart disease, history of seizure, or have a pacemaker are also at greater risk. Axon also warns that repeated, extended, or continuous exposure to the weapon is not safe. Because of this, the Police Executive Research Forum says that total exposure should not exceed 15 seconds.[42]

The function of screen and face shield is to protect the eyes and face of the welder from the harmful ultraviolet and infrared radiations produced during welding. The shielding may be achieved from head helmet or hand helmet.

The constituents of typical electrode coatings and their functions are given in table 7 11. Some of them are discussed here:

It is used when the thickness of the plates is from 8 to 16 mm. Both the edges are bevelled to form an angle of about 70° to 90°, as shown if Fig. 7.17 (b).

It is used when the thickness of the plate is more than 20mm. The edge preparation is difficult but the joints are more satisfactory. It requires less filler metal, as shown in Fig. 7.17 (d) and (e).

The first TASER conducted energy weapon was introduced in 1993 as a less-lethal force option for police to use to subdue belligerent or fleeing suspects, who would have otherwise been subjected to more lethal force options such as firearms. As of 2010[update], according to one study, over 15,000 law enforcement and military agencies around the world used tasers as part of their use of force continuum.[4]

A 2009 report by the Police Executive Research Forum in the United States found that police officer injuries dropped by 76% in large law enforcement agencies that deployed taser devices in the first decade of the 21st century compared with those that did not use them at all.[5] Axon and its CEO Rick Smith have claimed that unspecified "police surveys" show that the device has "saved 75,000 lives through 2011."[6][7] A more recent academic study suggested police use of conducted electrical weapons in the United States was less risky to police officers than hands-on tactics, and showed officer injury rates equal to use of chemicals such as pepper spray.

Advantages ofelectric arc welding

Former TASER International CEO Patrick Smith testified in a TASER-related lawsuit that the catalyst for the development of the device was the "shooting death of two of his high school acquaintances" by a "guy with a legally licensed gun who lost his temper".[14] The two decedents, Todd Bogers and Cory Holmes, died in 1991 not 1990 as Smith has claimed. Family members and friends of the two state that Smith was not friends with them, as Smith has claimed, and they were never "football teammates", as Smith has claimed. The two graduated before Smith attended Chaparral High School. Family members of the two have criticized his use of their deaths for profit.[15][16]

Guidelines released in 2011 by the U.S. Department of Justice recommend that use of Drive Stun as a pain compliance technique be avoided.[51] The guidelines were issued by a joint committee of the Police Executive Research Forum and the U.S. Department of Justice Office of Community Oriented Policing Services. The guidelines state "Using the CEW to achieve pain compliance may have limited effectiveness and, when used repeatedly, may even exacerbate the situation by inducing rage in the subject."

Tasers have been in use by UK police forces since 2001, and they require 18 hours of initial training, followed by six hours of annual top-up training, in order for a police officer to be allowed to carry and use one.[91] Members of the general public are not allowed to own tasers, with possession or sale of a taser punishable by up to 10 years in prison. As of September 2019, 30,548 (19%) of police officers were trained to use tasers.[92] Tasers were deployed 23,000 times from March 2018 to March 2019, compared to only 10,000 times in 2013; however the UK police definition of "deployed" means that the weapon has been drawn; in the majority of cases it will not have been fired.[93] In March 2020, extra funding was provided to purchase devices to allow more than 8,000 extra British police officers to carry a taser.[94]

These electrodes do not consumed during the welding operation, hence they named, non-consumable electrodes. They are generally made of carbon, graphite or tungsten. Carbon electrodes are softer while tungsten and graphite electrodes are hard and brittle.

The TASER 7 device is the second newest of all four CEWs. It is a two-shot device with spiral darts that spool from the dart allowing the probes to fly straighter. The TASER 7 device's rapid arc technology with adaptive cross connections allows for full incapacitation. The TASER 7 CEW connects wirelessly to the Axon Evidence network that includes inventory management capabilities among other things.[20]

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The electrode coating may consists two or more ingredients. Different type of coatings used for different type of metals to be welded.

The slag is float on the top of the weld and can easily be brushed off after solidification of weld. The quality of weld produced by coated electrode is much better as compared to that of bare electrodes.

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Under the Firearm and Sword Possession Control Law, import, carrying, purchase and use of stun guns or tasers is prohibited in Japan.[87]

After reading this article you will learn about:- 1. Meaning of Electric Arc Welding 2. Procedure of Electric Arc Welding 3. Electric Current for Welding 4. Significance of Polarity 5. Equipments 6. Edge Preparation of a Joint 7. Electrodes.

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The function of electrode holder is to hold the electrode at desired angle. These are available in different sizes, according to the ampere rating from 50 to 500 amperes.

According to a 2011 study by the United States Department of Justice's National Institute of Justice entitled Police Use of Force, TASERs and Other Less-Lethal Weapons,[4] over 15,000 law enforcement and military agencies around the world used TASER devices as part of their use of force continuum. Just as the number of agencies deploying TASER conducted energy weapons has continued to increase each year, so too the number of TASER device related "incidents" between law enforcement officers and suspects has been on the rise.

The shape of edges may be plain, V-shaped, U-shaped, re­shaped, etc. The choice of various edge shapes depends upon the kind, thickness of metal to be welded. Some different types of grooves for edges of the work are shown in Fig. 7.17. BaDD

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The first Taser model that was offered for sale, called the TASER Public Defender, used gunpowder as its propellant, which led the Bureau of Alcohol, Tobacco and Firearms to classify it as a firearm in 1976.[12][13]

It is used when the thickness of the plate is from 3 to 5 mm. Both the edges to be weld should be spaced about 2 to 3mm apart as shown in Fig. 7.17 (a).

A.C. machine usually works with 50 hertz or 60 hertz power supply. The efficiency of A.C. welding transformer varies from 80% to 85%. The energy consumed per Kg. of deposited metal is 3 to 4 kWh for A.C. welding while 6 to 10 kWh for D.C. welding. A.C. welding machine usually work with low power factor of 0.3 to 0.4, while motor in D.C. welding has a power factor of 0.6 to 0.7. The following table 7.9 shows the voltage and current used for welding machine.

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These electrodes get melted during welding operation, and supply the filler material. They are generally made with similar composition as the metal to be welded.

The electric arc is produced when two conductors are touches together and then separated by a small gap of 2 to 4 mm, such that the current continues to flow, through the air. The temperature produced by the electric arc is about 4000°C to 6000°C.

The welding machine used can be A.C. or D.C. welding machine. The A.C. welding machine has a step-down transformer to reduce the input voltage of 220- 440V to 80-100V. The D.C. welding machine consists of an A.C. motor-generator set or diesel/petrol engine-generator set or a transformer-rectifier welding set.

In response to the claims that the pain inflicted by the use of the TASER device could potentially constitute torture, Tom Smith, the Chairman of the TASER Board, stated that the U.N. is "out of touch" with the needs of modern policing and asserted that "Pepper spray goes on for hours and hours, hitting someone with a baton breaks limbs, shooting someone with a firearm causes permanent damage, even punching and kicking—the intent of those tools is to inflict pain, ... with the TASER device, the intent is not to inflict pain; it's to end the confrontation. When it's over, it's over."[109]

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The TASER 7 conducted energy device is a two-shot device with increased reliability over legacy products. The conductive wires spool from the dart when the TASER 7 conducted energy device is fired, instead of spooling from the TASER cartridge which increases stability while in flight and therefore increases accuracy. The spiral darts fly straighter and faster with nearly twice the kinetic energy for better connection to the target and penetration through thicker clothing.[31] The body of the dart breaks away to allow for containment at tough angles.[20] TASER 7 has a 93% increased probe spread at close range, where 85% of deployments occur, according to agency reports. Rapid arc technology with adaptive cross-connection helps enable full incapacitation even at close range.[20] TASER 7 wirelessly connects to the Axon network, allowing for easier updates and inventory management.[32]

The diagnosis of excited delirium has been controversial.[64][65] Excited delirium has been listed as a cause of death by some medical examiners for several years,[66][67] mainly as a diagnosis of exclusion established on autopsy.[57] Additionally, academic discussion of excited delirium has been largely confined to forensic science literature, providing limited documentation about patients that survive the condition.[57] These circumstances have led some civil liberties groups to question the cause of death diagnosis, claiming that excited delirium has been used to "excuse and exonerate" law enforcement authorities following the death of detained subjects, a possible "conspiracy or cover-up for brutality" when restraining agitated individuals.[57][64][65] Also contributing to the controversy is the role of TASER device use in excited delirium deaths.[62][68]

A metal electrode is used which supplies the filler metal. The electrode may be flux coated or bare. In case of bare electrode, extra flux material is supplied. Both direct current (D.C.) and alternating current (A.C.) are used for arc welding.

Fulton County, Georgia District Attorney Paul Howard Jr. said in 2020 that "under Georgia law, a taser is considered as a deadly weapon."[43][44][45] A 2012 study published in the American Heart Association's journal Circulation found that Tasers can cause "ventricular arrhythmias, sudden cardiac arrest and even death."[46][47] In 2014, NAACP State Conference President Scot X. Esdaile and the Connecticut NAACP argued that Tasers cause lethal results.[48] Reuters reported that more than 1,000 people shocked with a Taser by police died through the end of 2018, nearly all of them since the early 2000s.[49] At least 49 people died in the US in 2018 after being shocked by police with a Taser.[3]

When the work is made positive and electrode as negative then polarity is called straight or positive polarity, as shown in Fig. 7.16 (a).

(iv) The electrode is suitable for welding with direct current, with electrode being +ve or -ve. It is also suitable of welding with an alternating current with open circuit voltage less than 90 volts. [5].

In 1993, Rick Smith and his brother Thomas founded the original company, TASER,[17] and began to investigate what they called "safer use of force option[s] for citizens and law enforcement". At their Scottsdale, Arizona, facilities, the brothers worked with Cover to develop a "non-firearm TASER electronic control device".[18] The 1994 Air TASER Model 34000 conducted energy device had an "anti-felon identification (AFID) system" to prevent the likelihood that the device would be used by criminals; upon use, it released many small pieces of paper containing the serial number of the TASER device. The U.S. firearms regulator, the ATF, stated that the Air TASER conducted energy device was not a firearm.

The ingredients to improve arc characteristics are sodium oxides (Na2O), Calcium oxides (CaO), magnesium oxides (MgO), and titanium oxide (TIO2).

In 1999, TASER International developed an "ergonomically handgun-shaped device called the Advanced TASER M-series systems," which used a "patented neuromuscular incapacitation (NMI) technology." In May 2003, TASER International released a new weapon called the TASER X26 conducted energy device, which used "shaped pulse technology." On July 27, 2009, TASER International released a new type of TASER device called the X3, which can fire three shots before reloading. It holds three new type cartridges, which are much thinner than the previous model.[19] On April 5, 2017, TASER announced that it was rebranding itself as Axon to reflect its expanded business into body cameras and software. In 2018, TASER 7 conducted energy device was released, the seventh generation of TASER devices from Axon.[20]

The TASER 10 device was officially announced by Axon on January 24, 2023.[40] The TASER 10 was dubbed the "less-lethal weapon of its era" by Axon. In addition to the functions of the TASER 7, the TASER 10 features an increased probe distance of up to 45 feet, waterproof capabilities, increased probe velocity (205 feet per second), and ability to deploy the probes individually allowing the officer to create their own "spread" unlike previous models, which relied heavily on precise aiming of the prongs at a fixed angle with the assistance of two lasers.[41]

Both D.C. (direct current) and A.C. (alternating current) are used to produce an arc in electric arc welding. Both have their own advantages and applications.

A typical TASER device can operate with a peak voltage of 50 kilovolts (1200 Volts to the body), an electric current of 1.9 milliamps, at for example 19 100 microsecond pulses per second.[35] A supplier quotes a current of 3-4 milliamps.[36]

Electric arc weldingdiagram

The function of cables or leads is to carry the current from machine to the work. These are flexible and made of copper or aluminum. The cables are made of 900 to 2000 very fine wires twisted together so as to provide flexibility and greater strength.

A study of U.S. police and sheriff departments found that 29.6% of the jurisdictions allowed the use of Drive Stun for gaining compliance in a passive resistance arrest scenario, with no physical contact between the officer and the subject. For a scenario that also includes non-violent physical contact, this number is 65.2%.[52]

The first digits of the code number essentially explain the type of covering used on the electrode and this covering signifies the performance characteristics.

In the United States, TASERs are marketed as less-lethal, since the possibility of serious injury or death exists whenever the weapon is deployed. At least 49 people died in 2018 after being shocked by police with a Taser.[3] Personal use TASERs are marketed in the US, but prohibited in Canada. In Canada, all taser possession is considered illegal. There is a categorical ban on all conducted energy weapons such as stun guns or tasers, according to section 84 of the Canada Criminal Code. TASERs in Canada are only legal for Law Enforcement users.

Tasers are legal for civilians to own, provided they possess a valid permit under the Customs Act.[85] Currently,[when?] police in Jamaica do not have access to tasers, but in February 2021, Corporal James Rohan, Chairman of the Police Federation, requested access to non-lethal weaponry in order to deal more effectively with encounters with mentally ill individuals.[86]

The arc welding is a fusion welding process in which the heat required to fuse the metal is obtained from an electric arc between the base metal and an electrode.

A Las Vegas police document says "The Drive Stun causes significant localized pain in the area touched by the TASER [CEW], but does not have a significant effect on the central nervous system. The Drive Stun does not incapacitate a subject but may assist in taking a subject into custody."[53] The UCLA Taser incident[54] and the University of Florida Taser incident[55] involved university police officers using their TASER device's "Drive Stun" capability (referred to as a "contact tase" in the University of Florida Offense Report).

The Crown Bookstore is a specialty store focused on British Columbia. The public can view and purchase a wide variety of nautical charts and maps, ...

The efficiency and quality of welded joint also depends upon the correct preparation of the edges of the plates to be welded. It is necessary to remove all scales, rust, grease, paint, etc. from the surface before welding.

In straight polarity, about 67% of heat is distributed at the work (positive terminal) and 33% on the electrode (negative terminal). The straight polarity is used where more heat is required at the work. The ferrous metal such as mild steel, with faster speed and sound weld, uses this polarity.

In May 2023, in Cooma, NSW, Australia, police tasered a 95-yr old dementia patient from less than 2 m (6.6 ft) away after apparently giving up on negotiations with her to drop the knife she was holding. At the time, she was standing upright & holding onto her 4-wheel walker. She survived the incident, but succumbed to head injuries sustained in the subsequent fall and died a week later. Her Estate sued the NSW Government, and, in April 2024, the accused & suspended police officer plead not guilty to manslaughter & remains free on bail awaiting trial.[104][105]

In 2001, Germany approved a pilot project allowing individual states to issue tasers to their SEK teams (police tactical units); by 2018, 13 out of 16 states had done so. A number of states have also provided a limited number of tasers to their general police forces. Some states, such as Berlin, have use of force guidelines that only permit taser use where firearm use would also be justified.[81]

A TASER device fires two small dart-like electrodes, which stay connected to the main unit by thin insulated copper wire as they are propelled by small compressed nitrogen charges.[21][22] The cartridge contains a pair of electrodes and propellant for a single shot and is replaced after each use. Once fired the probes travel at 180 feet (55 m) per second, spread 12 inches (300 mm) apart for every 7 feet (2.1 m) they travel, and must land at least 4 inches (100 mm) apart from each other to complete the circuit and channel an electric pulse into the target person's body.[23] They deliver a modulated electric current designed to disrupt voluntary control of muscles, causing "neuromuscular incapacitation." The effects of a TASER device may only be localized pain or strong involuntary long muscle contractions, based on the mode of use, connectivity and location of the darts.[24][25] The TASER device is marketed as less-lethal, since the possibility of serious injury or death exists whenever the weapon is deployed.[26]

The electrodes are pointed to penetrate clothing and barbed to prevent removal once in place. The original TASER device probes unspool the wire from the cartridge, causing a yaw effect before the dart stabilizes,[29] which made it difficult to penetrate thick clothing. Newer versions (X26, C2) use a "shaped pulse" that increases effectiveness in the presence of barriers.[30]

The functions of cable connectors are to make a connection between machine switches and welding electrode holder. Mechanical type connectors are used; as they can he assembled and removed very easily. Connectors are designed according to the current capacity of the cables used.