Hi Gary:
> I have a small double insulated wall wart type power supply. 120 Vac
> in,
12 Vdc out has a symbol of a house with an arrow pointing inside the house.
What is that symbol and whence did it come.
The house with an arrow pointing into the house means
"for indoor use."
>From
Thanks for the tip. DGE has since posted a note, apparently on Dec 17th, at
http://europa.eu.int/comm/enterprise/ne
approach/standardization/harmstds/reflist/emc.html
:
"Important notice:
The references of EN 12895:2000 and EN 13309:2000 were published in OJ C
190 of 2002-08-10. These reference
Gary,
The "house" symbol means indoor use only.
John Barnes KS4GL, NCE, ESDC Eng, SM IEEE
dBi Corporation
http://www.dbicorporation.com/
This message is from the IEEE EMC Society Product Safety
Technical Committee emc-pst
Hi Gary,
For the symbol with the arrow pointing into the house, I would say that the
wall wart is intended to
be used indoors, not outdoors. As to the symbols origin, I have no idea. But,
you might want to
check out ISO7000. There's many, many symbols in my 1989 copy (many I'm sure
that you'd re
Happy New Year to you all.
Long live the listserver!
Fast on the heels of the EMC & RTTE updates (see Helge's posting in
December), yet another Xmas present from the the Enterprise
Directorate-General of the European Commission.
LVD: Commission communication in the framework of the implementatio
I have a small double insulated wall wart type power supply. 120 Vac
in, 12
Vdc out has a symbol of a house with an arrow pointing inside the house. What
is that symbol and whence did it come.
This one is going to be tough to describe, and is on a little wireless
device.
I read in !emc-pstc that Bill Lyons wrote (in
<97...@lyons.demon.co.uk>) about 'Changes to IEEE emc-pstc web-based
services' on Thu, 2 Jan 2003:
>As an alternative, if sadly EMC-PSTC does go this retrograde way, we
>could all simply move to the sci.engr.electrical.compliance (s.e.e.c)
>newsgroup
Sam,
It is specified in ANSI C63.4 and CISPR 22 to perform initial emissions
testing to determine worst-case configuration and then to perform final
emissions testing. The differences in setup can include cable arrangement,
EUT/peripheral arrangement and modes of operation.
Reducing the number
Not having had a product with this variability, I can't offer much from
experience. However,
I would think that not all tests have to be performed at all frequencies.
Conducted and Radiated
emissions and immunity definitely - board layout vs.operating speed vs.wide
frequency range of
these tests.
Hi Luke:
> This won't work. If you want to look at how badly online forums work,
look at the IEE website.
Unfortunately, this requires a membership and a
login.
I really would like to know more about the
success of web-based forums.
Best regards,
Rich
Thank you for all the comments on the listserver-
based service versus the web-based service.
The IEEE listserver WILL continue.
I apologize for not being clear on this point.
We started with listserver service. However, the
listserver does not satisfy all of the needs of
our subscribers
Hi Jim:
Thanks for your message.
> The EMC Laboratory that I work for (Acme Testing Company in Acme,
> Washington) has the quietest open-field Emissions Sites (OATS) within a
1000
> mile radius. We planned it that way. The village of Acme has a total
> population of under 100 peopl
Group,
Happy Holidays. Thank you for your responses to my last post concerning AC
Power sources. I got a lot of good information.
Next question:
Client has a product that he is offering with various CPU types and speeds(5
to be exact) and is pursuing CE compliance. That is the only differenc
Good People
Is there a formal definition for "End User", as found in the proposal for the
new EMC Directive ( 2002/0306(COD) )?
Would a component power supply be considered an "apparatus" under this
proposal?
thanks much.
R/S,
Brian O'Connell
Taiyo Yuden (USA), Inc.
In message Nick Williams writes:
>
> I missed the original post which generated this thread in the last
> few days. Please could someone send it to me directly?
Happy New Year, Nick. It was attached to e.g. Luke Turnbull's post.
Copy below.
> I too would be very concerned to see the forum ch
This is a multi-part message in MIME format.
Luke
I sympathise with people with dial up connections and would be sorry to see
the loss of these contributors. However, there is a Yahoo group called
EMC-PSTC that was formed in 1998.
Is there any way that this could be used?
I have attached a link.
I missed the original post which generated this thread in the last
few days. Please could someone send it to me directly?
I too would be very concerned to see the forum changed from its
current e-mail delivery format, to the extent that if necessary (and
subject to it being possible - it's not
This won't work. If you want to look at how badly online forums work, look at
the IEE website.
Maybe one of the group can set up a list server elsewhere if the IEEE is sure
it wants to stop the service.
Luke Turnbull.
>>> Rich Nute 12/31/02 06:19pm >>>
Effective today, we are replacing our w
Happy New Year to you all.
Proposal for a DIRECTIVE OF THE EUROPEAN PARLIAMENT AND OF THE COUNCIL on
the approximation of the laws of the Member States relating to
electromagnetic compatibility is available at:
http://europa.eu.int/eur-lex/en/com/pdf/2002/com2002_0759en01.pdf
Best regards
Helge
I shall be sorry to lose access to the daily interchange among the EMC
professionals who've made this list worth subscribing to. Provision of a
link in e-mails is not even a poor substitute for those of us who wish to
use off-line readers. This is reminiscent, in its own inexorable way, to
the cr
I would have to agree with the last few posts.
My business partner and I are adding forums on our new site as more of a
courtesy for those that are interested. When we were deciding on this, we
thought about approaching the IEEE and ask them to have us host their
forums/listserv. Of course this w
Without the list server, you will lose a massive following. This includes
myself.
Tony Nikolassy
T-Tech Engineering Labs
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