An antistatic mat 'worth its salt' will have a ground connection and the
distributed conductance of the mat material provides safety from the
direct ground.
Yes, wrist straps are different, they have a large resistor (about 1
megohms) in series with the ground connection. Mine connect to a
'button' on the rear corner of the mat.
I have a quality mat covering much of my workbench as well as a wrist
strap. My commonly used tools rest on the mat as well as the radio
being worked on. Other less commonly used tools do not live on the mat
but are brought into contact with the mat for a bit of time before
touching them to any internal part of the radio.
I believe these are good antistatic work practices.
73,
Don W3FPR
On 1/12/2018 3:23 PM, SteveL wrote:
Also, I believe ESD wrist straps should have something like a 1 meg ohm
resistor in the ground connection to mitigate direct (and potentially fatal)
shock to ground while allowing the bleed off static charge. A direct
connection to ground is hazardous!
Steve
aa8af
On Jan 12, 2018, at 1:19 PM, Dale Chayes <[email protected]> wrote:
Whatever you buy, don’t forget (the obvious, but often overlooked):
- at least one wrist strap
- and you have to ground the mat
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