Bob Heller
3M EMC Laboratory, 76-1-01
St. Paul, MN 55107-1208
Tel: 651- 778-6336
Fax: 651-778-6252
=======================================================
----- Forwarded by Robert E. Heller/US-Corporate/3M/US on 12/13/2004 07:35
AM -----
Robert E.
Heller/US-Corpora
te/3M/US To
[email protected]
12/13/2004 07:35 cc
AM
Subject
Re: Simple EMC Prediction(Document
link: Robert E. Heller)
EMC and design knowledge is by far the cheapest, most efficient, and
quickest "filter" that exists. You can expand your resources, go to second
and third shifts, or speed up your radiated emissions procedure. If one
could make the simple EMC predictions that you want, you would not have a
job.
Bob Heller
3M EMC Laboratory, 76-1-01
St. Paul, MN 55107-1208
Tel: 651- 778-6336
Fax: 651-778-6252
=======================================================
robert.kado@valeo
.com
Sent by: To
owner-emc-pstc@li [email protected]
stserv.ieee.org cc
Subject
12/13/2004 06:30 Simple EMC Prediction
AM
Good Morning EMC Gurus,
We have the constant issue here in our lab of test time vs. resources.
Often we are proposing different design changes for various reasons (cost
savings, new supplier because of discontinued component etc.) This deals
with existing products that can be updated for various reasons.
The problem is we have a hard enough time keeping up with our new
business/projects that require full validations. In most cases failures
occur and solutions must be implemented to sell the products to the
customer.
In the case of a current production product often design changes are
proposed but of course some sort of validation must be performed before
making this design change. The design change can consist of electronic
components, material change, and mechanical changes.
My question is if anyone else has a similar issue in their lab and what
kind of tools can be used as a quick and efficient "filter" to either
proceed with a full boat of testing or eliminating the idea and moving on
to something else. The most common problem is most design changes require
Radiated Emissions testing. With only one Anechoic Chamber and the length
of the test this is hard to deal with.
Any ideas besides knowledge of a quick and simple test we can use to
perform this type of filtering? Our products are automotive so in some
cases we are talking PCB level but in most we are talking about various dc
motors. Of course we have the knowledge but as you all know in the EMC
world that is far from the final say all.
I would be interested in all responses.
Thank you.
Rob Kado
EMC Engineer
VWS - Auburn Hills, USA
Tel: 248-340-3828 / Fax: 248-340-3316
Internal Location 3M2
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