All,
Paschen's Law is the result of two functions in the breakdown of gases. Both
are related to the mean-free-path of ionized particles. As particles are
ionized, they are then polarized and accelerate from one high voltage
electrode to another. This can result the generation of secondary
Yes, it is. And jet engines don’t spool up as quickly as piston engines.
Ghery S. Pettit
From: emc-p...@ieee.org [mailto:emc-p...@ieee.org] On Behalf Of
ralph.mcdiar...@ca.schneider-electric.com
Sent: Monday, March 01, 2010 4:49 PM
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: Re: [PSES] Toyota
I remember that video and it seemed to me, a layman, that the aircraft was in
a flared attitude as it would be just before touchdown. It looked to me as if
it intentionally landed well past the end of the runway, into the trees. To
climb, isn't a large increase in thrust necessary?
This has been well discussed in aviation circles. The fly by wire systems in
the Airbus will not allow the pilots direct control. The pilot tells the
computer what he wants to do and the flight rules programmed into the computer
limit the aircraft to a certain performance envelope. In the Paris
In message
d500012385dca64883637ab4ccf491e30134c...@ms-cda-02.advanced-input.com,
McInturff, Gary gary.mcintu...@esterline.com writes
They got to the end of the pass saw the trees and tried to pull up, but
the software looked at the flight envelope and said no because the low
airspeed meant
I am looking for a list of accredited labs worldwide for RoHS testing. I
have tried to find such a list from the IEC but was not lucky. Can anyone
point me in the right direction? Thank you.
Scott Griggs
-
This message is from the IEEE Product Safety Engineering Society emc-pstc
Three rules of aviation relating to the Airbus –
1. Look what it's doing now!
2. It just did it again!
3. How do we make it stop doing that?
Ghery S. Pettit
From: emc-p...@ieee.org [mailto:emc-p...@ieee.org] On Behalf Of McInturff, Gary
Sent: Monday, March 01, 2010 3:57 PM
To:
Ralph,
When you get into designing things for the FAA, depending on the
criticality of the system, it becomes almost impossible to use any CPU or von
Nuemann architecture. Because of the V V requirements (verification and
validation) requirements for those systems CPU’s are usually
It seems to me that the 'wrong position' is difficult to define and equally
difficult to protect against. Would a watch-dog circuit always detect
firmware departing from normal control flow into an unintended state?If
the unintended state was caused by the instruction pointer fetching from
Hi Dan,
If a keynote speaker is needed, I have a keynote talk that is both
technically interesting and also will keep them laughing on the floor.
The funny part is titled Funny Airport Stories and involves some
interesting airport stores, a few of them acted out in a skit. This can
be mixed
Anybody know Dr. Griffin at SIU or have contacts at SIU? He might make a
timely keynote speaker for the Boston Symposium or perhaps one of his students
could do a paper at the Symposium. (See previous email with subject [PSES]
FW: [LF] Expert recreates Toyota sudden acceleration)
Dan
From:
Brian,
Several years ago, in a workshop at one of the first Product Safety
Engineering Society (PSES) symposiums, the question came up: How can
you certify software for safety-critical applications?
One of the people in the audience answered Treat the software as a
switch with two positions, ON
Reviewing the following link, I see that for EN 60204-33 the Stage code
deadline is 1 March 10. It also shows the Target date for vote as 30 June
10.
http://tinyurl.com/FprEN60204-33-2009
1. What do these two dates imply?
2. When will the Dor, Dav...Dow dates be set?
3. Historically, what
Please ignore my earlier (snide) comments about s/w vs h/w reliability. This
is an important topic that will probably become a recurring theme. Someone
needs to give a seminar at a PSES symposium for testing
microprocessor-controlled systems. And I am not talking about another
standards conformity
Hi Ian Charles,
When we put in our chamber (Boston area, MA), we used dielectric breaks to all
connections and mounting, isolated the power to the chamber and test equipment
and then used a dedicated ground from ground rods. We were required to drive 3
rods, 6 ft down, we ended up driving a 4th
A colleague of mine is looking for guidance on this EU specific question(s):
Is CE Mark required for equipment installed in power transmission facilities,
power plants, hydroelectric plants, substations and transmission towers? If
the answer is yes, is self-declaration acceptable, or is
This is just a definition not a requirement.
Best regards
Andy
Andy Clifford
Conformance Ltd - Product safety, approvals and CE-marking consultants, The
Old Methodist Chapel, Great Hucklow, Buxton, SK17 8RG England Tel. +44 1298
873800, Fax. +44 1298 873801, www.conformance.co.uk Registered in
Hi Ian,
Hans makes some great points. I installed a grid system under my entire
building and all metal building structure is bonded to that around the
periphery. The shield room is bonded all four corners to this mesh. Power for
the chamber is supplied from a dedicated power supply, which itself
My company would like to start manufacturing in China so I am looking for a
local Shenzhen company who specializes in quality inspections /audits
Mechanical /electrical sub assemblies e .
Joel Mandel
Manager
Quality Assurance
Environmental Testing
Teledata Networks
Tel: +972.9.9591850
Fax:
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