Hi Vyas,
You should apply first 5 positive and then 5 negative pulse.
-Mathan
From: Balmukund Vyas [mailto:balmukund.v...@ymllabs.com]
Sent: 31 July 2018 10:19
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: [PSES] impulse test
In IEC 60950 for impulse test (6.2.2.1) it is mentioned that "10 impu
In IEC 60950 for impulse test (6.2.2.1) it is mentioned that "10 impulses of
alternating polarity" to be applied.
Does this means "5 positive and subsequently 5 negative impulses " or "one
positive, second negative, third positivetenth negative" impulses?
Thanks
B M Vyas
This e-mail an
Hello Vincent,
The following link is old, but it is still a reasonable comparison of the U.S.
and European codes and installation requirements.
https://www.nema.org/Standards/ComplimentaryDocuments/nec-iec60364.pdf
Ted Eckert
Microsoft Corporation
The opinions expressed are my own and do not ne
John Woodgate OOO-Own Opinions Only
J M Woodgate and Associates www.woodjohn.uk
Rayleigh, Essex UK
On 2018-07-30 22:33, Vincent Lee wrote:
Hi all,
Good evening,
1) With the publication of IET BS 7671:2018, may I know what are the
major differences between IET BS 7671:2018 and its 2008 versi
Rather general questions. And a rather specific replies (at least for what
would apply to my employer's stuff). Also note that there is a renown engineer
at Microsoft that is quite intimate with the NEC - perhaps he will comment.
- allowed ground-fault current different.
-allowed bonding resist
Hi all,
Good evening,
1) With the publication of IET BS 7671:2018, may I know what are the major
differences between IET BS 7671:2018 and its 2008 version?
2) Apart from voltage rating of 120Vrms vs 230Vrms, how does USA National
Electrical Codes (NEC) different from IET BS 7671?
3) Do USA NEC
Go to:
http://www.iec.ch/dyn/www/f?p=103:22:0FSP_ORG_ID:1410
and look at the standards from IEC SC21 A. You don't give enough data to
be sure which standard you want. Note that by clicking on the standard
number you can see an abstract and a preview.
John Woodgate OOO-Own Opinions Only
IEC EN 61960:2011, superseded recently by IEC EN 61960-3, contains a
standardized way to measure battery capacity. Preview of the latter is
available at: https://www.evs.ee/preview/evs-en-61960-3-2017-en.pdf
Mike Sherman
Graco Inc.
- Original Message -
From: "Brian O'Connell"
To:
Brian
The questions is purely performance based - for hand-held electronics such as
mobile phones, e-readers, gaming controllers etc etc
Thanks for your comments - I don't think either battery nor ambient
temperatures were recorded.
Regards
Charlie
Charlie Blackham
Sulis Consultants Ltd
Tel:
List members:
I am in the unfortunate position that I require a frontend repair on a Keysight
CXA N9000A analyzer. I have received a quote from Keysight and am looking for
other possible more cost-effective options for repair.
Has anyone on the list been in a similar position and/or possibly kn
Hi,
Juniper Networks has an open position for Compliance/Safety Engineer at
Sunnyvale location.
Major focus is on Product Safety: design, testing, report writing, planning.
NEBS, Telecom and Wireless are desired.
Please see full description at:
https://careers.juniper.net/careers/careers/jobd
Not clear what is being asked. Is context safety or purely performance? In any
case, data from in vitro tests done with the intended end-use equipment are the
'ultimate' indicator. Should include the full range of rated operating
conditions.
The SAE, IEEE, IEC, Vulcan Science Academy, and other
Forgot to mention that battery impedance and internal temperature monitoring
are two parametrics oft ignored; and both may explain much weirdness with
battery performance.
Brian
-Original Message-
From: Brian O'Connell
Sent: Monday, July 30, 2018 10:31 AM
To: 'Charlie Blackham'; EMC-P
All
Client is have a "discussion" with their battery vendor over how capacity of a
3.7V 1000 mAh battery is being measured/demonstrated:
Are there any recommendations and/or mandatory requirements for
charge/discharge current to be used to demonstrate battery capacity and
capacity degradation o
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