One coulomb is the amount of electric charge transported in one second by a steady current of one ampere. So 100 micro-coulombs would be (for example) 1 amp for 100 micro-seconds.
Taser International claims that the X26 taser emits a total output of 100 micro-coulombs (100uC).
This claim can be checked by examining the X26 waveform copied straight from the X26 spec sheet.
First you mark out a rectangle 1 amp (1A) tall and 100 microseconds (100us) wide - this represents 100uC. Then you rearrange the graphical chunks of waveform to cover the 100uC rectangle. Either you'll run out of chunks, or you'll have some left over. I have done this as carefully as I can, and I think I've even been a bit generous to Taser with the big chunk on top.
There are some chunks left over. Especially the long decay tail which was not even graphically included on the spec sheet, but it was mentioned in the image legend.
This simple analysis indicates that "100uC" might be just a bit of an understatement.
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