mikeeey
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but fortunately, stun guns have a very low current, it's volts that they're high in
1.7 million volt stun gun review
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Benm
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They've got to deliver some current to be effective though.
Very high voltage devices with very low currents dont work as stun guns at all. I think many of us have seen the vandengraaf generators, with the big metal sphere atop a rotating belt. The bigger ones can build up to a megavolt or so, but only store energy in the capacitance bewteen sphere and ground. If you stand on something insulated and then hold the sphere, your hair will stand up nicely. Touch something grounded and you'll get your megavolt joint - which is comparable in sensation to touching your car door on a dry winter day (with a bit extra, but not enough to floor you by a long shot).
Very high voltage devices with very low currents dont work as stun guns at all. I think many of us have seen the vandengraaf generators, with the big metal sphere atop a rotating belt. The bigger ones can build up to a megavolt or so, but only store energy in the capacitance bewteen sphere and ground. If you stand on something insulated and then hold the sphere, your hair will stand up nicely. Touch something grounded and you'll get your megavolt joint - which is comparable in sensation to touching your car door on a dry winter day (with a bit extra, but not enough to floor you by a long shot).
jamilm9
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if it is 1.7 million volts a 1 ma then it is using 1.7k watts
http://www.electronics2000.co.uk/calc/power-calculator.php
http://www.electronics2000.co.uk/calc/power-calculator.php
Benm
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It would, if it could do both at the same time. These voltage ranges are idiotic to start with.
If it swings up to a high voltage (100k or 1.7M make little difference), that voltage will be shorted out by the arc as soon as that is formed. By the time the arc is there, i doubt it could maintain more than a few kilovolts over it.
Its the current behind it that causes the effect: you could easily floor someone by running 2 wires from a 230 volt wall socket and dishing out a zap. As the wall socket will deliver up to 16 amps if the connection is good enough, its also possible to kill someone, though its fairly unlikely to happen when just touching two points close together.
If it swings up to a high voltage (100k or 1.7M make little difference), that voltage will be shorted out by the arc as soon as that is formed. By the time the arc is there, i doubt it could maintain more than a few kilovolts over it.
Its the current behind it that causes the effect: you could easily floor someone by running 2 wires from a 230 volt wall socket and dishing out a zap. As the wall socket will deliver up to 16 amps if the connection is good enough, its also possible to kill someone, though its fairly unlikely to happen when just touching two points close together.
Razako
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I actually built a thing like this with a HeNe supply and a couple of 2000V .15uf tesla coil caps. It was loud as hell and left black scorches on stuff that I shocked with it.
HIMNL9
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Sorry, but reading all those volt indications, i just had to lol, and i mean really 
775.000 volt ?? ..... 1,7 millions volt ???? ..... LOL !!
free air medium breaking resistance is about 1000V/mm, so a 775.000 volt unit can produce an arc of at least 75 cm, and 1,7 million volts at least 1,6 / 1,7 meters ..... :crackup:
just make a resistors network divider ..... put 10 resistors of 10 Mohm (MEGAohm) and one of 100 Kohm in series (do a large mount, for avoid arcs through the resistors), and a capacitor around 1 KV in parallel to the 100 Kohm one ..... now at the two sides of the 100 Kohm one, you read 1/1000 of the voltage that you apply to the ends of the full serie ..... as example, if your unit is 50.000 volt output, you read 50 volt, and so on (a little out tolerance, but i suppose that for these levels of voltages, you don't need 0.001% of precision, right ?)
But you need a scope, cause the output is high frequency, and a multimeter can't read it correctly.
Anyway, be careful playing with high voltages
775.000 volt ?? ..... 1,7 millions volt ???? ..... LOL !!
free air medium breaking resistance is about 1000V/mm, so a 775.000 volt unit can produce an arc of at least 75 cm, and 1,7 million volts at least 1,6 / 1,7 meters ..... :crackup:
just make a resistors network divider ..... put 10 resistors of 10 Mohm (MEGAohm) and one of 100 Kohm in series (do a large mount, for avoid arcs through the resistors), and a capacitor around 1 KV in parallel to the 100 Kohm one ..... now at the two sides of the 100 Kohm one, you read 1/1000 of the voltage that you apply to the ends of the full serie ..... as example, if your unit is 50.000 volt output, you read 50 volt, and so on (a little out tolerance, but i suppose that for these levels of voltages, you don't need 0.001% of precision, right ?)
But you need a scope, cause the output is high frequency, and a multimeter can't read it correctly.
Anyway, be careful playing with high voltages
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Jaseth
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I just want to post a bit of info here to help some people out.
Firstly, NEVER EVER attempt to make your own stun gun. Real stun guns have an extremely high voltage with very few ampere. Some of the usual high end units are about 750000 volts (these have been mentioned a lot here too). The really extreme ones are about 2 million volts, but in general 500000V and up will be more than enough.
Another important feature is the PULSE of the stun gun. [(NOT CORRECT HERE: The pulse is set to correspond to that of nerves within your bone marrow, causing spasms. It is specially set to NOT correspond to that of your heart or upper spine, as that would kill you. :NOT CORRECT HERE)]
If you attempt to make one yourself you will probably have an unsafe amperage and the pulse will definately be wrong, causing you to have a lethal weapon.
Stun guns are most effective on thighs and torso/neck and you should therefore aim for these parts to bring the attacker down. Most of them, unless extremely high powered, are supposed to be used for 3 to 5 seconds for the full effect. A quick stun such as if you try it on yourself will only make you jump a bit and will not stop anyone. You have to make the attacker stop by shocking him and then after about 1 second at the most he should be lying on the ground. You should then continue for the amount of time suggested on the instructions with your specific stun gun for full effect. If the full dosage is given, in many cases the attacker will be unable to get up for 10 minutes and unable to fully control his movements for up to 30 minutes.
Any quality stun gun will have extra prongs in between the ones you use to defend yourself to discharge safely. This will also create a loud crackling sound when used, scaring off most assailants. While many bad movies will suggest otherwise, the stun gun does NOT make a sound when it is being used on a person, but only when the electricity has to jump through the air.
It depends very much on local laws who is allowed to use a stun gun, in what circumstances and at what age. Here in Europe they are illegal in general. Most countries which allow the use of stun guns by civilians will allow you to use them for the full dosage suggested with your instructions. Anything exceeding this will be classified as assault.
Please check your local laws for proper procedure - this is not professional advice and you should not blindly follow whatever you read someone on the internet say.
Hope that clears up some things
Please don't be naughty naughty with these.
Sebastian
Firstly, NEVER EVER attempt to make your own stun gun. Real stun guns have an extremely high voltage with very few ampere. Some of the usual high end units are about 750000 volts (these have been mentioned a lot here too). The really extreme ones are about 2 million volts, but in general 500000V and up will be more than enough.
Another important feature is the PULSE of the stun gun. [(NOT CORRECT HERE: The pulse is set to correspond to that of nerves within your bone marrow, causing spasms. It is specially set to NOT correspond to that of your heart or upper spine, as that would kill you. :NOT CORRECT HERE)]
If you attempt to make one yourself you will probably have an unsafe amperage and the pulse will definately be wrong, causing you to have a lethal weapon.
Stun guns are most effective on thighs and torso/neck and you should therefore aim for these parts to bring the attacker down. Most of them, unless extremely high powered, are supposed to be used for 3 to 5 seconds for the full effect. A quick stun such as if you try it on yourself will only make you jump a bit and will not stop anyone. You have to make the attacker stop by shocking him and then after about 1 second at the most he should be lying on the ground. You should then continue for the amount of time suggested on the instructions with your specific stun gun for full effect. If the full dosage is given, in many cases the attacker will be unable to get up for 10 minutes and unable to fully control his movements for up to 30 minutes.
Any quality stun gun will have extra prongs in between the ones you use to defend yourself to discharge safely. This will also create a loud crackling sound when used, scaring off most assailants. While many bad movies will suggest otherwise, the stun gun does NOT make a sound when it is being used on a person, but only when the electricity has to jump through the air.
It depends very much on local laws who is allowed to use a stun gun, in what circumstances and at what age. Here in Europe they are illegal in general. Most countries which allow the use of stun guns by civilians will allow you to use them for the full dosage suggested with your instructions. Anything exceeding this will be classified as assault.
Please check your local laws for proper procedure - this is not professional advice and you should not blindly follow whatever you read someone on the internet say.
Hope that clears up some things
Please don't be naughty naughty with these.Sebastian
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HIMNL9
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^ I'm sorry to have to say that, but you're using some too much zeroes in your voltage indication, really.
I made some of those toys, times ago, and usually used to set them around 45.000 / 50.000 volts, that is a good 5 cm arc between the tips ..... and they needed to resin the transformator in a high voltage block, for prevent self discharge ..... one time i got to reach 75.000 volts, but was a real pain you-know-where just building the transformator in the way that it don't get in fire itself after a pair of seconds ..... and i'm working with high voltages from something like 20 years, so please, let me say that i know about what i'm speaking.
2 millions of volts ? ..... yes, i know a machine that reach this tension, it's in an experimental laboratory, and they use it for test the effects of the lightnings on various materials (polarization, cristallization, microconductive patterns through the materials, melting, and so on) ..... it's 4 meters and half long, and produces nice arcs of 2 meters of lenght between the electrodes :beer:
If someone is able to build and give to me a true 2 millions volt taser less big than 2 meters, i'll pay his beers til the end of the year
I made some of those toys, times ago, and usually used to set them around 45.000 / 50.000 volts, that is a good 5 cm arc between the tips ..... and they needed to resin the transformator in a high voltage block, for prevent self discharge ..... one time i got to reach 75.000 volts, but was a real pain you-know-where just building the transformator in the way that it don't get in fire itself after a pair of seconds ..... and i'm working with high voltages from something like 20 years, so please, let me say that i know about what i'm speaking.
2 millions of volts ? ..... yes, i know a machine that reach this tension, it's in an experimental laboratory, and they use it for test the effects of the lightnings on various materials (polarization, cristallization, microconductive patterns through the materials, melting, and so on) ..... it's 4 meters and half long, and produces nice arcs of 2 meters of lenght between the electrodes :beer:
If someone is able to build and give to me a true 2 millions volt taser less big than 2 meters, i'll pay his beers til the end of the year
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Hey Jaseth...
Im not a doctor... but I'm petty sure that there are no nerves in your
bone marrow... which cause spasms...
Your heart can be stopped at almost any frequency...
It requires little amperage and some voltage but it must run
through the heart...IIRC
Jerry
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Jaseth
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Firstly, these are not toys.
Secondly, the fact that the electricity can travel over a certain distance does not mean that it will arc out this distance.
Arcs are caused by a continuous plasma discharge from the heating of a usually non-conductive material such as air by ongoing electrical current flowing through it.
A stun gun produces pulses and not continuous electrical discharge, thus causing sparks and not arcs, as the air is never heated enough to become plasma. For this reason, a stun gun spark will only travel directly to the nearest grounding, in this case between the two test prongs or through an assailant.
I cannot give you a 2 million volt taser as tasers are very different from stun guns and usually no more than 35000 volts.
Secondly, the fact that the electricity can travel over a certain distance does not mean that it will arc out this distance.
Arcs are caused by a continuous plasma discharge from the heating of a usually non-conductive material such as air by ongoing electrical current flowing through it.
A stun gun produces pulses and not continuous electrical discharge, thus causing sparks and not arcs, as the air is never heated enough to become plasma. For this reason, a stun gun spark will only travel directly to the nearest grounding, in this case between the two test prongs or through an assailant.
I cannot give you a 2 million volt taser as tasers are very different from stun guns and usually no more than 35000 volts.
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Jaseth
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Sorry for that, my information was not completely correct Jerry.. good of you to point that out! I found a place where they explain the process very well:
"Stun guns use high voltage and low amperage to temporarily disable an attacker for several minutes. The stun gun does not rely on pain for results. The energy stored in the gun is dumped into the attacker’s muscles causing them to do a great deal of work rapidly. This rapid work cycle instantly depletes the attacker’s blood sugar by converting it to lactic acid. In short, he is unable to produce energy for his muscles, and his body is unable to function properly. The stun gun also interrupts the tiny neurological impulses that control and direct voluntary muscle movement. When the attacker’s neuromuscular system is overwhelmed and controlled by the stun gun he loses his balance. Should the attacker be touching you, the current will NOT pass to your body!"
This explains why it will disable you for a long time.
"Stun guns use high voltage and low amperage to temporarily disable an attacker for several minutes. The stun gun does not rely on pain for results. The energy stored in the gun is dumped into the attacker’s muscles causing them to do a great deal of work rapidly. This rapid work cycle instantly depletes the attacker’s blood sugar by converting it to lactic acid. In short, he is unable to produce energy for his muscles, and his body is unable to function properly. The stun gun also interrupts the tiny neurological impulses that control and direct voluntary muscle movement. When the attacker’s neuromuscular system is overwhelmed and controlled by the stun gun he loses his balance. Should the attacker be touching you, the current will NOT pass to your body!"
This explains why it will disable you for a long time.
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Swell picture for you fellaz
HIMNL9
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Correct about continuous arcs, sorry we call usually arcs also the sparks, and my English is not very good, cause i'm not English, so sometimes i just don't find the right terms on-the-fly.
(also, i call them "toys" cause for me are this and not other ..... anyway, be sure, i don't mean that they are toys to give to kids or use for make jokes, i know perfectly what mean manage high voltages ..... never fight with high voltages, you always loose the match
)But, anyway, a spark of 10 cm lenght, is caused from the dielectric breaking in air, from 10.000 volts or few more or less (dry air and high pressure requires more voltage, humidity and low pressure require lower voltage)
The problem is not that you cannot reach higher voltages, with enough dimensions, as i said the 2 millions volts machine exists ..... but is occupying a room, and sparks are 2 meters long
Take, as example, the image of the taser some posts above, the one that say on the tag "775.000 Volts" ..... LOL ! ..... for the same above reasons, you can't build a pulsed transformer smaller than a certain dimensions, cause all the materials have a dielectric resistance, and you can't overcome it ..... always as example, the smallest 50 KV pulse transformer that i've ever found, industrial made, with vacuum-made impregnation with high insulation resin, is 30mm diameter and 35mm lenght, and the total distance from the two HV out wires is over 60 mm ..... and is materially impossible to build it smaller, cause also that special resin break on higher voltages, with that thickness ..... a 775.000 Volt pulse transformer that don't kill itself after the first spark, need at least 70/75 cm of lenght, and 45/50 cm of diameter, and the wires needs some other centimeters of highly insulation cable, for keep them away at least 80 cm from any other wire ..... do you really think they can fit a similar monstruosity inside a pocket size taser ?
Not mentioning that, for a similar voltage level, you need a holder at least 1 meter long, for avoid that the unit just discharge through your own hand (needing the discharge points far at least 70 cm one from the other, if you hold it with your hand at less than this distance, the shorter way for the spark become "passing through your hand" path
)Other than this, the sparks gap of that unit looks, at sight, around 50 mm far ..... this mean that this is just a 50.000 V unit, or few more, cause each time the spark snap between the two points, the voltage is turned down, so it never can increase over the spark dielectric breaking level.
The only one i made in the past reaching 75.000 Volt (ONLY 75.000), i had to put the transformer assembly in a resin bath on a box long 100mm and large 60, with the points at 80mm far on the long side, and the discharge points at 70mm far, and the electronic and batteries (3 x 9V !!) on another case long 18 cm, mounted at "T" shape, and with its 240 x 100 x 35 mm size, just it was surely NOT pocket size, LOL!
It's easy, for the makers, to stick a tag that say 775.000 Volt on a taser ..... i bet it's much less easy for them to demonstrate me that this value is true
Anyway, take always a lot of care, with them, also the 35.000 / 45.000 V ones that you find around for "self-defense" ..... in some rare cases, also these units had lethal end, on weak subjects !!