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
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
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
Removing DIPS
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
: 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
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 by Hewlett
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
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
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