Hi Neil, Do you use a wrist anti-static bracelet. I use to assemble HP
servers on an assembly line a few years ago and they had a wrist strap
that was attached to Earth ground at my assembly station. We also stood on
ant-static mats on the floor and I don't remember any failures at the time.
Thank You
Michael Johnston

On Wed, Dec 11, 2019 at 9:41 PM Neil <picdude3@narwani.org> wrote:

> Yeah, I don't expect complete anti-static protection... I've toasted a
> few things in the past with the only possibly explanation being ESD and
> just looking for some reduction to improve my odds.  These are usually
> simple boards and things I'm coding at my desk, or things I'm demoing to
> someone.  Anything mission-critical does get handled better, or will be
> worked on at a proper workstation with anti-static mats, etc.
>
> Cheers,
> -Neil.
>
>
>
> On 12/11/2019 2:46 PM, RussellMc wrote:
> > No vast experience with carpet mitigation, but I've been lead to believ=
e
> > over decades that
> >
> >   - You can greatly reduce carpet ESD levels but are unlikely to get th=
em
> > down to the level where no other protection is needed.
> >
> > - Anti-static sprays and surface treatments for carpet can remove the
> > shocks that people feel but as above, are not reliable as a sole
> protection
> > for electronics.
> >
> > - ESD hazards are both real AND overstated by protection supplies. How
> you
> > determine where the line is is 'the trick'.
> >
> > It may be that copper wire grids at enough more protection - but the
> > general argument has been that bulk grounding tends to work well enough
> > where the surface proper is not an ESD generator.
> >
> > Body capacitance certainly affects discharge energy levels - connecting
> > multiple bodies increases the felt shock markedly. A shuffling line of
> > zombies, with the lead zombie (read engineering department staff member=
)
> > pointing a finger at oncoming victims, produced fearsome results. The
> > victim and lead zombie were about equally impacted but all participants
> > felt a shock cross person to person gripped hands at discharge time.
> Filing
> > cabinets do a nice job as (painful) person discharge points.
> >
> > _____________________
> >
> > Many decades ago we were losing a significant percentage of eproms in a
> > development environment - using the then standard UV erasable ones.
> Better
> > attention to electrostatic handling after UV exposure reduced failures =
to
> > about zero.
> > I've never seen another so clear cut example.
> >
> > Butyl rubber sheet (carbon loaded) on development desks seems to work
> very
> > well.
> > These may mar the cosmesis if used on carpet :-).
> >
> >
> >                 Russell
> >
> >
> > On Thu, 12 Dec 2019 at 08:26, Neil <picdude3@narwani.org> wrote:
> >
> >> I'm remodeling an office and would like to make the ground (carpet)
> >> anti-static if possible.  I'm using nylon carpet, not anything
> >> ESD-specific, but I understand that if I place a grid of copper strips
> >> (grounded) first and use conductive adhesive, it would make a noticeab=
le
> >> difference, even for non-ESD carpet  The carpet manufacturer (Interfac=
e)
> >> says that there is a bit of ESD "protection" in that carpet anyway.
> >>
> >> I don't need this to meet any spec or be certified, etc... just lookin=
g
> >> to help protect all my open PCB's from possible damage while I'm here.
> >>
> >> Any of you know if this is worth the effort/cost?  Or any other things=
 I
> >> can do to add a bit of ESD protection.
> >>
> >> Cheers,
> >> -Neil.
> >>
> >>
>
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