Electronics > Beginners

How dangerous are high voltage pulses?

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Electro Detective:

--- Quote from: amyk on July 09, 2019, 11:23:28 am ---
--- Quote from: Electro Detective on July 07, 2019, 11:05:28 pm ---FWIW I've had some good zaps and jolts from packing away those common to find white long plastic folding tables, with the tubular metal frame screwed in underneath, after a job end.
--- End quote ---

I'd figure out what is getting charged, and find out a way to discharge them. Maybe an ESD strap attached to a good ground, or at least the metal frame...

I guess the reason those were so strong is because the tables are big enough to act like capacitors with a relatively high capacitance, maybe even a few nF.[/size]

--- End quote ---


I'll roll with your explanation  :-+  as it makes sense, especially when my hurried 'slide along' pack up routine was charging up the plastic (or whatever mix it is) 
and coupled with the tubular metal frame somehow,
which zapped me regardless of any/all insulation and or earth ground combos I tried to avoid it. 

I won't be revisiting that scenario any time soon, now that I have the simple ESD avoidance workaround described earlier above,
and can set up and pack away at a decent pace without getting zapped.

Perhaps if I had the right test gear to cope, and a method to capture and document those jolts, I might play Zap Man  :o one last time for the boys and girls here (= NOT!  :scared:)

Funnily enough, I've used those tables to perform many electronic repairs and sensitive test setups with no apparent ESD issues for years  :-//
but still got zapped on the fold/pack up handling  |O

 

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