niconiconi,

Problem Exists Between Chair and Keyboard? But sometimes the problem is the chair. https://www.emcesd.com/pdf/uesd99-w.pdf

"Some office chairs are capable of producing several hundreds of discharges over as much as a minute after a person rises from the chair. The sheer number and close spacing of possible ESD events makes the probability of equipment failure more likely [...]"

"There is an urgent need for a standardized test so that procurement contracts can specify chairs that do not radiate this type of electromagnetic interference"

lanodan,
@lanodan@queer.hacktivis.me avatar
lanodan,
@lanodan@queer.hacktivis.me avatar

@niconiconi Also makes me wonder how the heck even smartphones cope with being inside various pockets.

niconiconi,

@lanodan Without exposed signal lines, the only thing you are likely to touch is the grounded enclosure or a metal connector. Ideally, ESD into ground = nothing.

Warlockofwires,

@niconiconi @lanodan I've always had a phobia of the screen touch input circuitry being the route of ESD...

lanodan,
@lanodan@queer.hacktivis.me avatar

@niconiconi Love how he got blinkenlichts with shaking pocket change.

Suiseiseki,

@niconiconi >Hardware is being made so crappily that it can't handle a trivial amount of ESD a whole metre away.

niconiconi,

@Suiseiseki Hardware is not crappy. They are rigorously engineered to pass IEC 61000-4-2, which is the industry-standard ESD compliance test for the past 40 years. The lesson is that the office chairs can generate a highly non-trivial amount of ESD well exceeding the known engineering knowledge at that time: ~100 pulses in several seconds, in comparison to 10 in compliance tests.

ve7fim,
@ve7fim@mastodon.social avatar

@niconiconi

When the weather conditions are right, sitting down or getting up from my work chair generates enough EMI to desync the HDMI connection to my computer display.

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