Fred Smith
Sent: Wednesday, December 05, 2012 2:04 PM
To: 'Jay Krishna'; elecraft@mailman.qth.net
Subject: Re: [Elecraft] ESD Protection for K3 Assembly
Jay most have a snap on them that snaps to the one on the mat like it. Then
the mat attaches to the ground.
Fred/N0AZZ
-O
Thanks Don... Yes indeed...all my grounds are connected to each other via big
fat ass cables.
Sent, as to how? Who cares!
On Dec 5, 2012, at 4:22 PM, Don Wilhelm wrote:
> Phil,
>
> Connection to the AC ground should be adequate and safe - if a receptacle is
> properly grounded, remove the s
Phil,
Connection to the AC ground should be adequate and safe - if a
receptacle is properly grounded, remove the screw in the center of the
cover plate and attach a terminal lug there.
If your station ground is connected by a heavy guage wire to the Utility
Entry ground point, then I will ag
-
From: "Philip Townsend Lontz"
To: "Fred Smith"
Cc:
Sent: Wednesday, December 05, 2012 2:32 PM
Subject: Re: [Elecraft] ESD Protection for K3 Assembly
I connect mine to my station ground... If there is zero lightning!
Sent, as to how? Who cares!
On Dec 5, 2012, at
> -Original Message-
> From: elecraft-boun...@mailman.qth.net
> [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Jay Krishna
> Sent: Wednesday, December 05, 2012 3:34 PM
> To: elecraft@mailman.qth.net
> Subject: [Elecraft] ESD Protection for K3 Assembly
>
>
> H
To: elecraft@mailman.qth.net
Subject: [Elecraft] ESD Protection for K3 Assembly
Hi all,
I received my K3 kit yesterday and am setting up to start assembly. I bought
an ESD mat and a wrist band. I was wondering what I should connect the
alligator clip from the wrist band to, for best protection
Hi all,
I received my K3 kit yesterday and am setting up to start assembly. I bought an
ESD mat and a wrist band. I was wondering what I should connect the alligator
clip from the wrist band to, for best protection?
Thanks,
Jay (KD6AMA)
___
That's it! Thanx, Lou.
73
Jim
AL7BA
-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Lou Voerman W2ROW
Sent: Monday, September 03, 2012 2:30 PM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] ESD Protection Mats
See the KX3 Kit Assembly Manual page 5. The third mat listed is a Desco.
Lou W2ROW
AL7BA - Jim Shaw wrote
>
> I know I've seen a couple e-mails, one fairly recently, on one of the
> Elecraft reflectors I subscribe to that referenced an Elecraft doc, I
> believe, that listed three ESD mats th
I know I've seen a couple e-mails, one fairly recently, on one of the
Elecraft reflectors I subscribe to that referenced an Elecraft doc, I
believe, that listed three ESD mats that were recommended because of their
resistive specs. There was a U-Line, a 3M, and one other. Can someone please
point m
In a recent message, tony rowland writes
>will someone, in a nutshell, explain what a transverter is and why i
>might need one.
>s/tony rowland
To save bandwidth on here, Tony, please look at Wikipedia. There is a
simple explanation on there.
By the way, please give your callsign, Tony, to com
ay, December 28, 2010 10:52 AM
Subject: [Elecraft] esd
wife "say's" when thinking of esd think CAT|||
my turn. will someone, in a nutshell, explain what a transverter is and why
i might need one.
s/tony rowland
__
El
wife "say's" when thinking of esd think CAT|||
my turn. will someone, in a nutshell, explain what a transverter is and why i
might need one.
s/tony rowland
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
I have a skin condition which causes the skin on my finger tips to crack and
peal. So I usually work with these Nitrile gloves on my hands:
http://www.harborfreight.com/cpi/ctaf/displayitem.taf?Itemnumber=37051
My question is, how does this effect my use of the wrist strap for ESD
prevention wh
t off, happens to slip and this way you won't
damage the front panel.
Good luck from Fern VE7GZ
- Original Message -
From: n...@verizon.net
To: elecraft@mailman.qth.net
Sent: Saturday, January 10, 2009 4:46 PM
Subject: [Elecraft] ESD sensitive tuning knob
I have not p
I have not posted very often to this reflector even though I get and read the daily digests, so I hope someone can be of help.Since I got my K3 in February of last year, I have repeatedly had a problem that seems to be ESD related when USING my K3. We are currently experiencing some cold weather a
Al, the explanation could be that the sauce pans are not machine flat, thus
have a much smaller contact area than their measured diameter would indicate.
A machined flat surface with the mat sitting on a very flat surface would
probably yield much different results. Trying to make laboratory a
Here's some more information for the latest swirling controversy :-)
If you try to measure the resistance of an anti-static mat, you'll need
an ohmmeter good to at least 1,000 megohms. Even my HP/Agilent 34401A 6
digit benchtop DMM can't measure that high!
Why is the resistance so high if it
@mailman.qth.net] On Behalf Of Alan Bloom
Sent: Friday, December 19, 2008 10:49 AM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] ESD mat measurements
On Fri, 2008-12-19 at 08:18, Rich Lentz (KE0X) wrote:
> You may get better - different - results if you use an oscilloscope to
> meas
On Fri, 2008-12-19 at 08:18, Rich Lentz (KE0X) wrote:
> You may get better - different - results if you use an oscilloscope to
> measure this voltage peak. The Simpson has ?dampening? qualities and
> will NOT show the true peak voltage/current.
It shouldn't matter. I was not trying to measure the
You may get better - different - results if you use an oscilloscope to
measure this voltage peak. The Simpson has ?dampening? qualities and will
NOT show the true peak voltage/current.
Also, have you taken into account any internal resistance of the Simpson? As
I recall that was a 20,000 ohms p
Alan,
Bloom's Law: I like it.
Doug out my mat and, no, couldn't measure it with my DVM. It so
happens that I do have a nice L/C meter (Almost All Digital Electronics
model L/C Meter IIB) and I did discover I can measure capacitance: About
1 pf. Now, while thats not telling me the resist
A few months ago I reported here on some measurements I made on the
Radio Shack portable ESD mat (see below). Basically I found that it
doesn't bleed off static charges as it is supposed to. (i.e. It fails
the ESD Association resistance specification for ESD mats.)
So I recently bought another E
1. use a room with a wooden floor
2. use a wooden table
3. sit on a wooden chair
4. have a mister going
5. do not wear any clothing
6. use an esd matt and wrist strap
7. don't send in any photos
___
Elecraft mailing list
Post to: Elecraft@mai
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
man.qth.net] On Behalf Of capo...@bellsouth.net
Sent: Thursday, December 18, 2008 1:21 PM
To: Reflector
Subject: [Elecraft] ESD Question!
Good afternoon All.
They say an un-asked question is the only "dumb" question. Well, here goes!
I'm an appliance operator and my technical s
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
Good afternoon All.
They say an un-asked question is the only "dumb" question. Well, here goes!
I'm an appliance operator and my technical skills are kinda shallow. I do have a DMM and know how to use it.
I'm in the planning stage of building my dream transceiver: aka an Elecraft K3.
: Sunday, July 27, 2008 2:30 PM
To: elecraft@mailman.qth.net
Subject: [Elecraft] ESD Damage Question
I have my K3 on order, and plan to take all of the standard ESD precautions
when I build it. My question is about after it is built and in operation.
I just got through paying to have a new control
I have my K3 on order, and plan to take all of the standard ESD precautions
when I build it. My question is about after it is built and in operation.
I just got through paying to have a new control board put in my Kenwood TS-2000
because it apparently had some ESD damage. I always disconnect m
D'Eau Claire
Sent: Saturday, July 26, 2008 11:51 AM
To: Elecraft@mailman.qth.net
Subject: [Elecraft] ESD Safety
This is a subject that comes up here regularly among those working on
their Elecraft (and other) rigs.
Doing some research on a project, I ran across the following values
published
TECTED]>
Cc:
Sent: Saturday, July 26, 2008 10:03 AM
Subject: Re: [Elecraft] ESD Safety
Looks like the only solution is to work under water. All of the voltages
exceed the 30 volts or so level we have heard cause damage to sensitive
components.
73
Rick Dettinger K7MW
Knowing that you need 2000V or so before you feel it illustraits why
its important to take ESD precautions with sensitive parts, very
recently at work we had an LDMOS device that would be destroyed with
about 30V which means moving your hand in the air near it would cook
it, hence why the use of wr
Ron wrote:
> Typical Electrostatic Voltage Levels
> Relative Humidity for each voltage level shown below:
> 10%
> 40%
> 55%
>
> Walking across carpet
> 35,000 V
> 15,000 V
> 7,500 V
>
> Walking across vinyl floor
> 12,000 V
> 5,000 V
> 3,000 V
>
> Motions of bench worker
> 6,000 V
> 800 V
> 400 V
Looks like the only solution is to work under water. All of the
voltages exceed the 30 volts or so level we have heard cause damage
to sensitive components.
73
Rick Dettinger K7MW
On Jul 26, 2008, at 9:51 AM, Ron D'Eau Claire wrote:
This is a subje
This is a subject that comes up here regularly among those working on
their Elecraft (and other) rigs.
Doing some research on a project, I ran across the following values
published by Hewlett-Packard Company. They provide some insight about
why it's important to use ESD-safe handling procedures.
Jerry Flanders wrote:
I simply clip a little alligator clip lead to my metal watch
wristband. The lead is connected to my shack ground through a 1 meg
resistor. A few feet of wire allows me mobility. I have been doing
this for several years and it apparently works well for zero cost.
A potentia
I simply clip a little alligator clip lead to my
metal watch wristband. The lead is connected to
my shack ground through a 1 meg resistor. A few
feet of wire allows me mobility. I have been
doing this for several years and it apparently works well for zero cost.
Jerry W4UK
At 11:11 PM 5/21/2
Robert,
There was lots of discussion of this on the list a month or two ago,
but suffice to say there are many sources and it seems a lot of them
cost about $25. Nobody had any significant reasons to recommend one
kind over another.
Here's a cheaper source, and while you're at it, a fine
Robert,
There are lots of choices. Google on antistatic mat to find several.
I can't say that one is better than the other, just pick one and use it
- it will be better than nothing at all.
73,
Don W3FPR
Robert Klein wrote:
My K3 kit will arrive in a month or so (I hope). I have been moni
My K3 kit will arrive in a month or so (I hope). I have been monitoring
this reflector for a few weeks, but I haven¹t seen this addressed.
I would appreciate it if I could get some recommendations on purchasing an
ESD mat with a wrist band so I can be ready when my kit arrivesbrands,
models, s
://www.cobaeurope.com/index.asp
Ron AC7AC
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of OE5CSP-Chris
Sent: Thursday, April 03, 2008 3:24 AM
To: elecraft@mailman.qth.net
Subject: [Elecraft] ESD-Matte
Wo bekommt man im deutschsprachigen Raum eine günstige und gute ESD
Computer Werkzeuge, z.b.
http://www.brack.ch/aspx/Shop/lager.aspx?ArtID=61180
Simon Brown, HB9DRV
--
From: "OE5CSP-Chris" <[EMAIL PROTECTED]>
Wo bekommt man im deutschsprachigen Raum eine günstige und gute ESD-Matte
plus Armgelenksband-oder loh
Wo bekommt man im deutschsprachigen Raum eine günstige und gute ESD-Matte
plus Armgelenksband-oder lohnt sich der Selbstbau?
73,Chris-OE5CSP
--
View this message in context:
http://www.nabble.com/ESD-Matte-tp16467379p16467379.html
Sent from the Elecraft mailing list archive at Nabble.com.
I ran into the same problem, then discovered the mat
lead reaches to the floor, so I put the strap around
my ankle. No more knocking the parts trays across the
workspace. I DO have to remember it's attached when I
get up :-o
Rob
KC6ROC
K2/100 #5924
--- WA6OCP <[EMAIL PROTECTED]> wrote:
>
> I am
I am sure others may have discovered this, but I will mention it anyway.
It takes about one second to find out that a wrist strap, and its lead, are
frequently in the way. I solved that problem by sliding the wrist band
halfway up my forearm.
Unfortunately, it doesn't remond you to take it off
On Wed, 30 Jan 2008 09:32:37 -0700, DW Holtman wrote:
>Hello,
>
>One source of ESD stations is Radio Shack.
>
>The RS Part number is, 276-2370. It is a complete kit, priced at $24.99
>
That's about right. Probably a good 25 cents worth of material
there...
73,
Drew
AF2Z
___
I have that homebrew article if anyone needs it.
73, Jerry K3BZ
- Original Message -
From: "DW Holtman" <[EMAIL PROTECTED]>
To: "Lee Buller" <[EMAIL PROTECTED]>; "Elecraft Reflector"
Sent: Wednesday, January 30, 2008 11:32 AM
Subject: Re: [E
I picked up a good quality name brand mat on Ebay
for $35. It included the ground kit and a bottle
of cleaning solution.
The seller is Stanley Supply and Services.
They have more - see Ebay item 200195839901
No connection with the seller, just a happy buyer.
73,
john WA1ABI
> > Where can
I went on the CompUSA website and ordered mine. I thought they were a
resonsable price
Mike, N4GW
-- Original message from Lee Buller <[EMAIL PROTECTED]>:
--
>
>
> Where can one find a inexpensive ESD mat? Or what can be used as an ESD mat?
> Also, what about a ES
t;
>
> Best,
> DW Holtman
> WB7SSN
>
> - Original Message -
> From: "Lee Buller" <[EMAIL PROTECTED]>
> To: "Elecraft Reflector"
> Sent: Wednesday, January 30, 2008 9:24 AM
> Subject: [Elecraft] ESD Mats
>
>
>>
&g
s also an article in QST, Jan 2000 on homebrewing an ESD mat, but I
don't have it. Wish I did.
Best,
DW Holtman
WB7SSN
- Original Message -
From: "Lee Buller" <[EMAIL PROTECTED]>
To: "Elecraft Reflector"
Sent: Wednesday, January 30, 2008 9:24 AM
Sub
Where can one find a inexpensive ESD mat? Or what can be used as an ESD mat?
Also, what about a ESD wrist attachment? Where do you find them?
Also, I guess you would hook them to the station ground?
Comments are welcome
Lee - K0WA
In our day and age it seems that Common Sense is in shor
David Woolley wrote:
In IEE terms, the PME system is TN-C-S. The older system is TN-S.
There is a rare configuation (TT), used for rural overhead supplies,
where each house has its own earth electrode, but these are not
connected to the neutral, which is only earthed at the sub-station.
TT i
Don Wilhelm wrote:
residential AC power in the US - All exposed metallic components of the
electrical wiring system must be connected to the electrical safety
ground. There is an earth ground connection at the service entry point
- which is to be the only direct ground point in the system (ye
Very true David. "Earthing" to the mains ground is the proper way to do it.
If there's a separate ground rod for any reason, such as an RF ground, most
codes require that it be connected to the mains earth ground as well.
It's worth making sure the mains ground is connected too! I've encountered
a
Jerry and all,
There are a few soldering stations that have isolated tips (they also
say they are ESD safe) that can be used when working on live circuits.
The Solomon soldering station that I have is an isolated tip.
73,
Don W3FPR
Jeremiah McCarthy wrote:
Until retirement in 1993, I worke
Until retirement in 1993, I worked for 35 years soldering in the aerospace
industry...In every soldering station and straight soldering iron I ever
encountered that had a 3 prong AC connector, the soldering tip was connected
directly to house ground...I have an old Weller WTCP, a Hakko 936, an o
David,
Having to study the National Electrical Code prior to building and
wiring my house, I can talk a bit about the safety grounding for
residential AC power in the US - All exposed metallic components of the
electrical wiring system must be connected to the electrical safety
ground. The
Ron D'Eau Claire wrote:
That's why a connection to earth ground is recommended and important. It's
often pointed out that it doesn't matter if everything is grounded as long
as it's at the same potential. That's true, but connections to the earth are
usually all around us, often in unexpected pla
[mailto:[EMAIL PROTECTED] On Behalf Of Darrell Bellerive
> Sent: 24 November 2007 17:12
> To: elecraft@mailman.qth.net
> Subject: Re: WARNING! WARNING! WARNING! (was [Elecraft] ESD recommendation)
>
> What about touching the circuit board pads with my Weller soldering sta
Ron D'Eau Claire wrote:
> To be sure I'm not being fuzzy-headed, I checked the Hakko on my bench and
> its tip is certainly connected directly to the mains ground (< 1 ohm).
Well, fair point, if you somehow manage to come into contact with 110v
AC AND make good contact with the tip of your solderi
: WARNING! WARNING! WARNING! (was [Elecraft] ESD recommendation)
Check the resistance to earth - it may have a resistor in series already.
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Darrell Bellerive
Sent: 24 November 2007 17:12
To: elecraft@mailman.q
Check the resistance to earth - it may have a resistor in series already.
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Darrell Bellerive
Sent: 24 November 2007 17:12
To: elecraft@mailman.qth.net
Subject: Re: WARNING! WARNING! WARNING! (was [Elecraft
That's why a connection to earth ground is recommended and important. It's
often pointed out that it doesn't matter if everything is grounded as long
as it's at the same potential. That's true, but connections to the earth are
usually all around us, often in unexpected places.
It's the same as th
What about touching the circuit board pads with my Weller soldering station
that has a grounded tip?
On Friday 23 November 2007 10:52, Gary Hvizdak wrote:
> YOU ABSOLUTELY POSITIVELY SHOULD NOT GROUND THE CHASSIS while
> assembling
>
> your K3 or anything else that has ESD sensitive componen
At 07:21:12 EST 2007 on Fri Nov 23, David Ferrington, M0XDF wrote ...
You need
:
:
* a ESD wire - to connect the rig chassis to your bonding point
(some may say this isn't absolutely necessary)
--
All,
YOU ABSOLUTELY POSITIVELY SHOULD NOT GROUND THE CHASSIS while assembling
your K3 or
I have had that esd wrist strap and mat for years
and the K3 was an obvious place to start using them...
bill
At 07:51 AM 11/23/2007, Julian G4ILO wrote:
On Nov 23, 2007 12:48 PM, Dave G4AON <[EMAIL PROTECTED]> wrote:
> You must use anti-static precautions. It's foolish to assemble a
On Nov 23, 2007 12:48 PM, Dave G4AON <[EMAIL PROTECTED]> wrote:
> You must use anti-static precautions. It's foolish to assemble a $2500
> radio only to damage it for the sake of perhaps $25 worth of anti-static
> products.
Even I, notorious tightwad that I am, have forked out on an
anti-static ma
You must use anti-static precautions. It's foolish to assemble a $2500
radio only to damage it for the sake of perhaps $25 worth of anti-static
products. Mats and wrist straps must be tested for continuity before
use, a pin through the mat will usually give a good enough connection
for a multi-
Yes you do have to go to the effort of ESD projection - without it, you may
just get lucky and not blow a component - but then you've just waited months
for your K3 and why risk it? ESD stuff (like everything else) over in the US
is so damn cheap anyway.
I can't suggest where to buy - Radio Shack
Hello all -- Like everyone else I'm looking forward to a K3 showing
up sometime before I become a SK...hi hi...(third production
run...ugh)...but I'm trying to get prepared so everything will be
ready to go when the kit gets here. I don't have any special "ESD"
protection and was wondering wha
I save all of the black foam that ICs often come pressed into.
I sort all my leaded components by sticking them into it.
73
jim ab3cv
___
Elecraft mailing list
Post to: Elecraft@mailman.qth.net
You must be a subscriber to post to the list.
Subscriber I
John,
Interesting. The link is related to CMOS, which is extremely
sensitive to ESD.
Capacitors: I don't understand how a cap can be damaged unless ESD
has a transient faster than the cap can charge or there is enough
current to charge the cap beyond it's limits. But isn't that what th
Kurt Pawlikowski wrote:
Keith,
As far as I know, resistors, capacitors and most (if not all) diodes
will not be damaged by ESD. Note: Diodes will either conduct when
forward biased or "zener" and conduct when backwards biased - thought
I'm not sure about "special" diodes [barrier, shotkey
While building an XV144, I assume it is wise to take ESD precautions?
I have everything I need except the wrist strap, which seems to have gone
missing over the last 10 years or so.
Can anyone in the UK recommend a supplier? Looking at RS they are rather
expensive.
--
If you must play, decide on t
I will buck the trend and state I did nothing special
about esd, and never do, and don't seem to ever have problems.
If I am aware of it being very dry and having a lot of static
buildup, I would then take precautions like grounding
myself before working with chips, but I just don't think
most s
On 6/7/07, Nancy and Bob Widmaier <[EMAIL PROTECTED]> wrote:
Do most kit builders do this or is there a different solution?
I "protect" my work bench with a large mess, which seems to discourage
people wandering into my workshop.
Where can I get or buy large ESD bags in small quantities at a
Foils OK if you don't snag a bit on a sharp pin and short something later.
Also don't use foil if there are any batteries involved. You can kill a
computer motherboard if you wrap it in foil with the battery installed.
Check
http://www.esdbagsonline.com/General_purpose_esd_bags_.php
for
On Jun 7, 2007, at 6:49 PM, Nancy and Bob Widmaier wrote:
Where can I get or buy large ESD bags in small quantities at a
reasonable price?
Just wrap them in aluminum foil if you are concerned.
73 de Brian, WB6RQN
Brian Lloyd - brian HYPHEN wb6rqn AT lloyd DOT com
__
It seems that the K2 circuit boards should be stored in ESD bags while being
assembled.
I am concerned that family members might inadvertently touch the boards being
built.
Is this correct?
Do most kit builders do this or is there a different solution?
Where can I get or buy large ESD bags
RC asked:
> Hi Gang
> I am slightly confused! When using ESD protective
> measures you should use:
> 1) a wrist strap connected to
> 2) an anti-static mat.
> 3)You should build/work on the anti-static mat to be
> certain that all components (and you)are at the same electrical
> potential there by
When you walk across carpet in the winter, and touch a door handle and
generate a spark, you are producing in excess of 3000 volts. It takes
significantly less than that to damage many silicon circuit elements.
The damage can be done without and indication of the event.
A ground strap with a
On 2/15/07, RC <[EMAIL PROTECTED]> wrote:
Hi Gang
I am slightly confused! When using ESD protective
measures you should use:
1) a wrist strap connected to
2) an anti-static mat.
3)You should build/work on the anti-static mat to be
certain that all components (and you)are at the same
electrical po
Hi Gang
I am slightly confused! When using ESD protective
measures you should use:
1) a wrist strap connected to
2) an anti-static mat.
3)You should build/work on the anti-static mat to be
certain that all components (and you)are at the same
electrical potential there by minimizing any ESD dam
To: Mike Short
Cc: Elecraft@mailman.qth.net
Subject: Re: [Elecraft] ESD Risk vs Relative Humidity
My 2c worth. I have posted on this reflector before my experiences with ESD
and my K2 as I was building it. First, understand that I live in the
mountains of Colorado at about 8200' ASL. It i
ur mileage may
vary but these are my experiences.
/joe k8fc
- Original Message -
From: "Mike Short" <[EMAIL PROTECTED]>
To:
Sent: Wednesday, December 20, 2006 5:24 AM
Subject: RE: [Elecraft] ESD Risk vs Relative Humidity
ESD damage does not always show up immediately. ES
In some manufacturing you cannot get through the security doors into the
assembly area unless your boots and body strap pass the ESD test at the entry
point.
David
G3UNA
>
> From: "Mike Short" <[EMAIL PROTECTED]>
> Date: 2006/12/20 Wed PM 12:24:56 GMT
> To:
&
an.qth.net
Subject: Re: [Elecraft] ESD Risk vs Relative Humidity
Mike and Don,
Thanks for your input. I suspect that ESD damage occurs more often than one
realises. Don's report confirms. I read reports that quite a few of the
NATO IC-781s went down in the last gulf conflict for no apparent rea
st of problem
causes.
Best 73
Wyn, VR2AX
- Original Message -
From: "Mike Harris" <[EMAIL PROTECTED]>
To: "Wyn Hughes" <[EMAIL PROTECTED]>;
Sent: Tuesday, December 19, 2006 5:42 AM
Subject: Re: [Elecraft] ESD Risk vs Relative Humidity
> G'da
G'day,
Today in Hong Kong we have relative humidity (RH) of 55% (temp a
'freezing' 16 C), compared to our norm of 90 - 100% RH and temp 30 C+
I assume the 16C was outside not inside.
RH in the house is of the order 40-60% temp 20-22C most of the time. No
cats, no ESD countermeasures besid
Wyn,
Congratulations on your moderate weather - enjoy it while you can.
It would take a large ESD surge to cause any problem with assembled
electronics, including the K2 and the XV144 - all the sensitive devices are
connected in circuit to their normal termination.
The problem during assembly IS
What is considered a 'normal' ESD safety limit?
Today in Hong Kong we have relative humidity (RH) of 55% (temp a 'freezing' 16
C), compared to our norm of 90 - 100% RH and temp 30 C+
These past two days my daughter and xyl have mentioned several 'static shocks'
when they play with our cats, all
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
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