December 18, 2008 5:01 PM
To: Elecraft@mailman.qth.net
Subject: Re: [Elecraft] ESD Question!
Wow, Lyle. You sound like the nuns in parochial school. But Sister, I
*can't* sit still!
73--Nick, WA5BDU
(squirming and fidgeting)
Lyle Johnson wrote:
3) Sit quietly in your chair while worki
craft@mailman.qth.net
Subject: Re: [Elecraft] ESD Question!
Wow, Lyle. You sound like the nuns in parochial school. But Sister, I
*can't* sit still!
73--Nick, WA5BDU
(squirming and fidgeting)
Lyle Johnson wrote:
>
> 3) Sit quietly in your chair while working, with your feet on the
&g
Wow, Lyle. You sound like the nuns in parochial school. But Sister, I
*can't* sit still!
73--Nick, WA5BDU
(squirming and fidgeting)
Lyle Johnson wrote:
3) Sit quietly in your chair while working, with your feet on the
floor (no rubber soles). Don't shuffle your feet - especially if a
car
On the theory that an ounce of prevention is worth a pound of cure, I
try to minimize the static generation in the first place. Long before I
had an anti-static mat I practiced static minimization.
For example:
1) Don't wear insulated sole shoes when working on your equipment. And
avoid nyl
Hi Jim,
Unfortunately, you probably can't check to make sure the mat is actually an
ESD mat, since it's resistance will be too high for your DMM to measure. It
will just show as an open circuit on a DMM.
There are ways to measure the resistance by letting the sheet discharge a
capacitor and me
Jim,
There are *no* dumb questions! In fact, this is a good question and
not asked nearly as often as it maybe should!
The biggest issue with ESD is keeping a discharge from going
*through* you equipment. In *theory*, an ungrounded system offers some
protection from this, but it is not
On Monday 24 July 2006 13:35, Ron D'Eau Claire wrote:
> All it takes to be as safe as sitting at the bench with a wrist
> strap on is to touch a ground *before* touching anything else, and keep
> touching that ground again and again before touching other things.
That is how I built my K2 and nu
I've done a lot of work servicing electronics in the "field", far from bench
resources. All it takes to be as safe as sitting at the bench with a wrist
strap on is to touch a ground *before* touching anything else, and keep
touching that ground again and again before touching other things...
Ano
That's a great ESD story Mike. I can almost hear the groans that must have
erupted when that little spark hopped over to the I.C. Even being installed
on the board couldn't save that one.
Mats and straps are wonderful, and should be as much a part of any workbench
as a soldering iron and good ligh
Dave wrote:
> ...We
> were always told that static damage isn't always immediately obvious and
> that parts may be been stressed and suffer from premature failure at a
> future date.
>
> 73 Dave, G4AON
As an example, a coworker and I were doing final testing of a prototype
board we had just finis
Paul VE1DY wrote "Do I really need the mat"
It's your personal choice, however when I worked in the electronics
industry we had wooden benches with anti-static mats on them. I admit
the static risk is low, the cost of damage to a part in something as
complex and expensive as a K2, doesn't seem wor
Ron D'Eau Claire wrote:
I make sure the grounds for all the equipment on my bench are tied together.
That also means that they are tied to the mains ground, since the 'scope,
soldering station, bench power supply and a few other items are all plugged
into mains outlets.
My wrist strap connects
I make sure the grounds for all the equipment on my bench are tied together.
That also means that they are tied to the mains ground, since the 'scope,
soldering station, bench power supply and a few other items are all plugged
into mains outlets.
My wrist strap connects to the same ground, throug
Hello Dave and all,
I have and old mat with a wrist strap attachment, meant to be used
with a keyboard. I don't like wrist straps, so I use a piece of 1"
square pcb board and tuck it next to my skin, under my belt. This
frees up my hand.
This square of pcb board is grounded through it's coily
Kirk
I use a low cost earth mat and wrist strap. In order to connect them
together (and to earth) I have an aluminium bar alongside the work
bench, this in turn connects via a length of "hook up" wire and
crocodile clip to the station ground. At the start of each session I
check there is continuit
Hi Kirk,
While the latter may offer more protection than nothing at all, I have been
trained to use the former method. Grounding the ESD mat and wrist strap to
a true earth ground will properly "siphon" off any residual static charge.
The wrist strap should measure approximately 1 Megaohm to
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