Mike,
Amendment A1:1999 to EN 55011:1998 mainly:
* Changes the Measured on a test site, Group 1, Class A column of
Table 3 to be measured at 10m instead of 30m; all the limits increase
10dB.
* Changes the On a test site column of Table 5 to be measured at 10m
instead of 30m; all the
Can someone please provide a quick synopsis of Amendment A1:1999 to EN
55011:1998? Line conducted emissions?
thanks!
Mike Sherman
FSI International
Actually, the EFT test pre-dates the IEEE reference. IEEE included a
reference to IEC 801-4 in the earlier IEEE 587 document, which has now
become ANSI/IEEE C62.41 (now reissued as a 2002 document as a Trilogy:
C62.41, C62.42, and C62.45). In the 70's, EFT tests were being conducted in
Europe
To your advantage in using the 60950-1 standards, under the
scenario you painted.
Peter
From: Brian O'Connell
Sent: Wednesday, June 04, 2003 8:32 AM
According to EN60950-1, table 4B, note 1, a
winding temperature measured using embedded
thermocouples no longer requires the 10ºC
To all interested parties:
The presentation slides of two presentations from May20th meeting titled:
Avoiding typical EMI problems in Multilayer printed circuit boards/Power and
Ground Plane Decoupling
(NOTE: Please record the password to open the file)
and
Predicting the Future - The GTEM
According to EN60950-1, table 4B, note 1, a winding temperature measured using
embedded thermocouples no longer requires the 10ºC differential.
luck,
Brian
-Original Message-
From: Peter L. Tarver [ mailto:peter.tar...@sanmina-sci.com]
Sent: Wednesday, June 04, 2003 8:04 AM
To:
Brian -
In using the older standards, the temperature compensation
inequalities are slightly different. In 1.4.12 of the 60950
standards, if Tmax is specified,
(T - Tamb) ltet (Tmax - Tmra)
or
(T) ltet (Tmax - Tmra + Tamb)
From 60950-1,
(T) ltet (Tmax + Tamb - Tma).
Other than variable
On Mon, 02 Jun 2003 16:51:47 -0400, Stephen Irving
sirv...@lutron.com wrote:
We are investigating the Electrical Fast Transient (EFT) test as detailed in
IEC/EN 61000-4-4. I am looking for some experience/advise with this test.
My understanding is that the IEC created this test to standardize
Hi All,
I am writing this from Oxford University where I will be teaching the
next few days. This dorm room makes me feel like I am back in college
(except these days dorm rooms come with high speed internet access).
My June article talks about using an asparagus can in the developement
lab
This is a multi-part message in MIME format.
I would recommend you provide a letter from the manufacturer (you?)
instructing approximately as below. Conductor re-identification with tape is
permitted by the code and better explained in the code handbook (ref
310.12). Keep in mind a disconnect
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