The AC who left comment #15 appears not to have fully understood basic, high-school level physics - voltage and current are not independent of each other. If we presume the load is fixed, e.g. x cm of tissue, then a certain V implies a certain A and vice versa (with DC and linear electrical circuits at least).
E.g., a googling suggests muscle is about 400 Ohm.cm, and that taser probes must land at least 10cm apart for the device to be effective. So 4000Ohm . 60A = 240kV - and that's presuming the probes impact muscle, and doesn't say anything about electrical flux across the heart.. A quick test here of dampened skin suggests something in order of 100kOhm.cm resistivity, implying that potentially MV's are needed to drive 60A through skin (course, skin tissue wouldn't be such for long at such levels of current!).
Anyway, arguing the point around DC is irrelevant to a degree, because the Taser discharges 19Hz cycle pulses. I only know enough to know that working out the fields produced by AC is more complex than DC (e.g. skin effects in AC), and that AC pulses might differ in their impact on human physiology from continuous DC.
IEEE Spectrum had a good article "How The Taser Works", with less ill-informed speculation than either the AC or I have provided:
http://www.spectrum.ieee.org/dec07/5731/2
Techdirt has not posted any stories submitted by Paul Jakma.
Since when is Groningen in the UK?
The bike mugging was in the Netherlands - as you can see from the address on the photo on the register story you've linked to.
Ohm's Law
The AC who left comment #15 appears not to have fully understood basic, high-school level physics - voltage and current are not independent of each other. If we presume the load is fixed, e.g. x cm of tissue, then a certain V implies a certain A and vice versa (with DC and linear electrical circuits at least).
E.g., a googling suggests muscle is about 400 Ohm.cm, and that taser probes must land at least 10cm apart for the device to be effective. So 4000Ohm . 60A = 240kV - and that's presuming the probes impact muscle, and doesn't say anything about electrical flux across the heart.. A quick test here of dampened skin suggests something in order of 100kOhm.cm resistivity, implying that potentially MV's are needed to drive 60A through skin (course, skin tissue wouldn't be such for long at such levels of current!).
Anyway, arguing the point around DC is irrelevant to a degree, because the Taser discharges 19Hz cycle pulses. I only know enough to know that working out the fields produced by AC is more complex than DC (e.g. skin effects in AC), and that AC pulses might differ in their impact on human physiology from continuous DC.
IEEE Spectrum had a good article "How The Taser Works", with less ill-informed speculation than either the AC or I have provided:
http://www.spectrum.ieee.org/dec07/5731/2