The problem I have seen is related to harmonic current, but really is more
easily understood in the time domain. Electronic power supplies, either
linear or switched, draw large slugs of current when 50/60 Hz filter
capacitor potentials drop two diode drops below line potential, at which
time the
I read in !emc-pstc that Tania Grant wrote (in
) about 'CE test suite for
computers', on Sat, 18 Aug 2001:
>Most people will never understand anything unless it is explained
>to them. Merely stating
>that the power distribution in Europe and America is not the same,
>is not an
Hi John and Tania:
Actually, the harmonic current problem is no
different between Europe and North America.
The basic problem is that the harmonic currents
generated in the load equipment are dissipated
in the delta primary of a delta-wye distribution
transformer. If the harmonic content i
Dear Mr. Woodgate,
Most people will never understand anything unless it is explained to them..
Merely stating
that the power distribution in Europe and America is not the same, is not an
explanation but could even be construed as a lofty put-down.
If anyone out there can explain the difference
I read in !emc-pstc that Dave Hutchins wrote
(in <01c12740.dd271200.hutch...@protek-tvs.com>) about 'CE Mark for AC
Power Line Protection Module', on Fri, 17 Aug 2001:
>Dose anyone know what directive or EN standard is required for applying the CE
>mark to an AC Power Line Protection Module.
'M
I read in !emc-pstc that Scott Proffitt wrote (in
<200108172147.oaa09...@goose.mail.pas.earthlink.net>) about 'Battery
Charger:Testing for CE Compliance', on Fri, 17 Aug 2001:
>Stuart,
>
>I think that not only has our EMC discussions not fully answered your
>original question, "what specific test
I got one too but some unpronouncable name and it contained the Magistr
worm. Recognized by the title which contins the colured logo for
VirusAlert. If you get it don't open it , just delete it.
In spite of what Mr. Norton says Norton Anti Virus 2000 with all current
updates doesn't catch it.
R
Hi Richard:
A number of good comments have been made.
I'm not sure anyone covered the fact that
two wires make a bundle, and therefore each
single in that bundle must be derated.
So, a single 10 AWG is good for 32 amps at
20 C. But, two 10 AWG wires in the same
bundle are only good for 31
Dose anyone know what directive or EN standard is required for applying the CE
mark to an AC Power Line Protection Module.
B. Rgds.
David W. Hutchins
Director
World Wide Marketing & Applications Fax: 602-431-2288
Tel: (direct) 602-414-5107 eFax 50
Hi George and Ravinder:
We really like to discourage off-topic discussions,
including virus warnings.
Here are some points I'd like to make:
1. The IEEE majordomo listserver includes virus checking
(for known viruses) of all messages posted to the
listserver. IEEE virus checking
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