High Frequency Electricity Demonstrating the "Skin Effect"

[paulma8]

On the other hand if you increase the contact surface, the resistance would go down and the current would go up, even to a level that would kill.

[paulma8]

i read that skin effect at 20kh is minimal and that the reason you don't feel the pain is because the human nervous system doesn't sense electric currents at and above that frequency.

If the human body resistance is about 100 000, 125v would pass a current of 1 ma through you, totally harmless.

For the current to be hazardous it would have to be 150ma at 60hz.

[LeJimster]

How does this compare to the frequencies Tesla used in his "lightning" machine. The same principle applies right? Higher frequency electricity "crawls" over your skin but doesn't penetrate it like low frequency.

[Lipdorn]

I'd probably venture that is more a combination of skin resistance and impedance than the skin effect. The resistance limits the current, and impedance at high frequencies means that it will literally take the shortest distance between the two wires. Thus moving in his skin.

Due to the low conductivity of skin and low frequency of his setup, it cannot be the skin effect. He's illustrating that electricity follows the path of least IMPEDANCE, ie in this case his skin.

[detibry]

so the wires resistance increases with frequency due to the skin effect, which (plus the resistance of you body) brings the current down to a non-lethal level.

is this correct?

[GraffixWB]

put the bulb under water and see if it still works

[Gmc42082]

@GraffixWB the skin effect or the bulb. the bulb would stay light for a little bit,but it most likely this is not at a high enough frequency for the skin effect to protect me. when i get time I'll build a frequency generator so i can demonstrate the effect better.

[eck0aleng]

Skin effect at 20kHz is minimal. The only reason it doesn't hurt as much is because the transformers are acting as current limiters. (see magnetic saturation)

[Gmc42082]

@eck0aleng in this case they are not, the transformer is actually a ferrite toroid transformer, they don't become saturated at theses frequencies like an iron core transformer would. the final output is at least 60 watts or .5 amps (as in my demo and defiantly enough to kill) and could reach at least 150 watts, the max output of the electronic transformer

[eck0aleng]

@Gmc42082 Look buddy, I was (and still am) so confident in my explanation that when I wrote "(see magnetic saturation)", I didn't even google it myself because I knew what the top results would be. You obviously didn't do any research (even with my reference) because you tried to relate magnetic saturation to frequency in your retort (btw google top result is a wiki with a good explanation). There are 3 other things you state wrong above, but one is true - it IS enough to kill. Out of space...

[Gmc42082]

@eck0aleng buddy i have a degree in electronic engineering, i don't get my info from wiki, the idiots encyclopedia, i get it from my college text books. yes the effect works better at higher frequencies, as you hear me say, i can feel a tingle, its the current heating up the surface of my skin. the skin effect is just a phenomenon where electrons flow at the surface of the conductor rather than the entire cross section. maybe i'll make a new vid and update a few things.

[muralkz]

I did this export before but doesn't work i have no idea

[Gmc42082]

@muralkz id have to see you setup to help, if you did it just like mine, you have to hook a 12v light bulb to the electronic transformer, they require a resistive load to work, if now let me know what your setup was,and i can try to trouble shoot it for you

[alex681219]

I suspect that this guy Kapanadze watch?v=TwGMZukdZxI

Use this way to light his bulbs.

The consumpsion in kw is the same with your 12v transformer than you connect the bulb straight to 110v plug?

[Gmc42082]

@alex681219 nah,hes working on a free energy machine, something that doesnt exist. his device is just picking up radio waves and turning into a usefull power sorce, unfortunatly, the devices that do work are pretty lage and can just about power a digital watch,his vid was saying his output was 5kw,hes either 10 feet away from a 50,000Watt radio station, or his vid is BS,id pick the latter. the final output on mine is 120v,with transformers the rules is Power in the primary is the same as

[Gmc42082]

@alex681219 the power in the secondary,so in theory it should be using the same power as if i plugged it straight into the wall, but transformers are never 100% efficient ,but they come very close. in other words,the light bulb, is drawing 60Watts, but i am using a little more than 60 watts total,that power is lost in the transformer,though eddy currents and hysteresis losses.

[helixwinder]

Nice demo, but it is based on the false premise that the lack of shock is due to the skin effect. You don't feel a shock because the frequency is too high for your nerves to respond. The skin effect only applies to good conductors, and the human body is not a good conductor. This fact is the basis for the d'Arsonval high frequency currents which result in deep heating of tissues. If the skin effect applied to human tissue, this would not occur.

[Gmc42082]

thanks , but your right it does have to do with good conductors,and the electrons flowing though the outside of the conductor, i can feel it,mostly the heating of my fingers. however the effect of the high frequency does cause electrons to flow on the outside of the skin and not deep into the tissues. im not saying you cant get an electrical burn. but the skin effect can be used to run high V/A on the outside of your rather than though your body into your heat with causes electrocution

[Gmc42082]

also at high voltages poor conductors can be treated as if they were great conductors. i do have an associates degree in electrical engineering,and i remember my one teacher always saying "weird things happen when you push voltages,and frequencies to the extreme. all in all, i wish Tesla were still here,he would understand this stuff better than anyone!

[helixwinder]

Please read the Wikipedia articles on "Tesla Coil" and "Skin Effect." The "Tesla Coil" article addresses high frequency current penetration in human tissue , and the "Skin Effect" article gives a mathematical treatment of the subject in conductors. Do a search on "diathermy." I hope that you find this useful.

[afdhalatifftan92]

Damn dude!! Thanks for the nice demo!!

[ufaxx]

A very good demo!

[chrischris349]

Awesome