Re: Aluminum Keyboard Shocking Problem
- From: Madwen <wyvern@xxxxxxxxxxxxxx>
- Date: Fri, 29 Feb 2008 10:44:12 -0600
In article <1id2kx9.1m1r8dl1j6w7gjN%dempson@xxxxxxxxxxxxx>,
dempson@xxxxxxxxxxxxx (David Empson) wrote:
Madwen <wyvern@xxxxxxxxxxxxxx> wrote:
Ack, I had a system crash/freeze today and I fear it may have been
caused by static electricity (I have the logs but I don't understand
what they mean). I love my new aluminum KB except that I get occasional
static electricity discharges when I touch it. My chair sits on an
anti-static mat which is on a wood floor. I'm not getting shocks
anywhere else in the house but I notice that if I shuffle my feet on the
mat it is sometimes enough to generate a little shock. This never
happened before with any other KB.
Is your anti-static mat earthed? If not, it is probably just acting as
an insulator, and there is nowhere for the static electricity to go.
When you touch any metal object which has a reasonable connection to
earth, you will be discharged, in this case your aluminium keyboard.
Indeed it is not earthed. And that's why I've always wondered how they
could call these mats "anti-static". I imagined some kind of special
construction or material that met that criteria. But I should have
realized that, as with so many things these days (in the US),
misrepresentation of product has become commonplace. That's what
happens when those in power are vested in looking the other way.
I have a plastic mat under my chair in my office at work, and it has the
same problem if I roll around on my chair (depending on atmospheric
conditions) - I get shocks touching my metal filing cabinet or my
MacBook Pro (same for my PowerBook G4 prior to that).
In my case, it's a shoe problem. Rolling the chair around does not
cause a static discharge.
I can avoid this by leaving one foot on the carpet, which seems to be
enough to discharge the static electricity.
I also have an antistatic wrist strap which is earthed (though a
protective resistor) and I wear that if I'm working on electronic
equipment.
I have a couple wrist straps that I use for that purpose. But I'd hate
to have to use one while typing.
.
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