. Checks are made that none of it will interfere with other
services. I suspect that there is no check on immunity, but the F1
people may do their own checks on what emissions are present in the
area.
--
Regards, John Woodgate, OOO - Own Opinions Only. Phone +44 (0)1268 747839
Fax +44 (0)1268
00e301c0b7d0$2e84a760$2ba7e7d8@default, Lou Aiken ai...@gulftel.com
inimitably wrote:
240V x 3 sqr = 416V, not much different from the mil spec you mention.
How is 240 V involved? The supply is 115 V 3-phase.
--
Regards, John Woodgate, OOO - Own Opinions Only. Phone +44 (0)1268 747839
Fax +44
or advice about this.
Dave Palmer
500 V is OK if the supply is designed never to have any transient
overvoltage more than some value less than 500 V.
--
Regards, John Woodgate, OOO - Own Opinions Only. Phone +44 (0)1268 747839
Fax +44 (0)1268 777124. http://www.jmwa.demon.co.uk Why
they haven't overcome it, but work on US mains that have very
little voltage distortion. Use in Europe (even if the voltage and
frequency differences were overcome) could be dangerous, since up to 5%
voltage distortion is present almost everywhere.
--
Regards, John Woodgate, OOO - Own Opinions Only. Phone
, one specific harmonic, then a
filter would be practicable.
--
Regards, John Woodgate, OOO - Own Opinions Only. Phone +44 (0)1268 747839
Fax +44 (0)1268 777124. http://www.jmwa.demon.co.uk Foxhunters suffer from
tallyhosis. PLEASE do not mail copies of newsgroup posts to me
in January this
year. Does anyone know what it was about?
--
Regards, John Woodgate, OOO - Own Opinions Only. Phone +44 (0)1268 747839
Fax +44 (0)1268 777124. http://www.jmwa.demon.co.uk Foxhunters suffer from
tallyhosis. PLEASE do not mail copies of newsgroup posts to me
disturbance of the
brightness of a 60 W lamp on the same circuit. But the proposed new
('amended' - they retained the commas and put new words between them)
doesn't allow you to do that - you HAVE to use the flicker meter, which
means hiring a test-house that has one.
--
Regards, John Woodgate, OOO - Own
the new texts.
While yo do not HAVE to apply the amendments yet, most manufacturers
will find it very helpful to do so.
--
Regards, John Woodgate, OOO - Own Opinions Only. Phone +44 (0)1268 747839
Fax +44 (0)1268 777124. http://www.jmwa.demon.co.uk Foxhunters suffer from
tallyhosis. PLEASE do
dollars. 'That's 200 000 for you, 200 000 for me, and we
let A do the work.'
--
Regards, John Woodgate, OOO - Own Opinions Only. Phone +44 (0)1268 747839
Fax +44 (0)1268 777124. http://www.jmwa.demon.co.uk Foxhunters suffer from
tallyhosis. PLEASE do not mail copies of newsgroup posts to me
the product is.
--
Regards, John Woodgate, OOO - Own Opinions Only. Phone +44 (0)1268 747839
Fax +44 (0)1268 777124. http://www.jmwa.demon.co.uk Foxhunters suffer from
tallyhosis. PLEASE do not mail copies of newsgroup posts to me.
---
This message is from the IEEE
than 'housekeeping' text. But there is a
great deal of work going on in order to produce a realistic, consensual
standard. Limits will need to be fully justified technically.
--
Regards, John Woodgate, OOO - Own Opinions Only. Phone +44 (0)1268 747839
Fax +44 (0)1268 777124. http
008a01c0a262$97a76a80$0f133ad8@zi8755, Ralph Cameron ral...@igs.net
inimitably wrote:
How about an insulated wrench?
Missing, just when you want it.
--
Regards, John Woodgate, OOO - Own Opinions Only. Phone +44 (0)1268 747839
Fax +44 (0)1268 777124. http://www.jmwa.demon.co.uk Foxhunters suffer
of IEC P-members) attempts to address. The next revision will
go even further.
--
Regards, John Woodgate, OOO - Own Opinions Only. Phone +44 (0)1268 747839
Fax +44 (0)1268 777124. http://www.jmwa.demon.co.uk Foxhunters suffer from
tallyhosis. PLEASE do not mail copies of newsgroup posts to me
.
--
Regards, John Woodgate, OOO - Own Opinions Only. Phone +44 (0)1268 747839
Fax +44 (0)1268 777124. http://www.jmwa.demon.co.uk Foxhunters suffer from
tallyhosis. PLEASE do not mail copies of newsgroup posts to me.
---
This message is from the IEEE EMC Society
regulating agencies. I find that
this is the best way to weigh the opinions of others and the sales spin of
the test labs. After all, it is the regulating agencies who can throw you
out of their country.
That's VERY good advice.
--
Regards, John Woodgate, OOO - Own Opinions Only. Phone +44 (0)1268
', at least the requirements will be
technically justified. Cars, after all, are not the same every where.
--
Regards, John Woodgate, OOO - Own Opinions Only. Phone +44 (0)1268 747839
Fax +44 (0)1268 777124. http://www.jmwa.demon.co.uk Foxhunters suffer from
tallyhosis. PLEASE do not mail copies
://www.eiafoundation.org/eng/lfeic/docpublic/default.htm.
I expect they refer to US conditions. We now know why harmonics create
far fewer problems in USA than in Europe. I mentioned some of them in
another message on this group.
--
Regards, John Woodgate, OOO - Own Opinions Only. Phone +44 (0)1268
on the
DoC. The rules about that vary a bit from one country to another, so the
authorities should be contacted.
--
Regards, John Woodgate, OOO - Own Opinions Only. Phone +44 (0)1268 747839
Fax +44 (0)1268 777124. http://www.jmwa.demon.co.uk Foxhunters suffer from
tallyhosis. PLEASE do not mail copies
networks.
This has only quite recently been demonstrated to the IEC committee: the
evidence from outside Europe was not submitted previously.
Capacitors and motors are the other things that are said to be
particularly vulnerable.
--
Regards, John Woodgate, OOO - Own Opinions Only. Phone +44 (0)1268
, but the intent of the current standards work is to try to minimise
the total cost, thus being fair to the consumer, the equipment
manufacturers and the supply industry. It's not an easy task, because
relevant data is scarce, and costly to collect.
--
Regards, John Woodgate, OOO - Own Opinions Only. Phone
but the 'protective earth conductor'. Outside
the equipment, avoid blue, brown and black, which could be mistaken for
mains wiring.
--
Regards, John Woodgate, OOO - Own Opinions Only. Phone +44 (0)1268 747839
Fax +44 (0)1268 777124. http://www.jmwa.demon.co.uk Foxhunters suffer from
tallyhosis. PLEASE do not mail
. But if they are published, go to
hppt://www.cenelec.org and search for 'EN 50360' and 'EN 50361'.
--
Regards, John Woodgate, OOO - Own Opinions Only. Phone +44 (0)1268 747839
Fax +44 (0)1268 777124. http://www.jmwa.demon.co.uk Foxhunters suffer from
tallyhosis. PLEASE do not mail copies of newsgroup posts to me
decreased due to design improvements and
'green' pressures.
I lead an IEC group which is producing an IEC Report on the subject
(future IEC61000-1-4).
--
Regards, John Woodgate, OOO - Own Opinions Only. Phone +44 (0)1268 747839
Fax +44 (0)1268 777124. http://www.jmwa.demon.co.uk Foxhunters suffer
contains harmonics? What happens to the I^2R loss and the dielectric
loss? What happens to hysteresis loss in motors and transformers?
--
Regards, John Woodgate, OOO - Own Opinions Only. Phone +44 (0)1268 747839
Fax +44 (0)1268 777124. http://www.jmwa.demon.co.uk Foxhunters suffer from
tallyhosis
to technological blackmail, and making
resistance to such nonsense that much more difficult for others.
I suppose the idea is that the calibrated equipment might catch an
'uncalibrating' infection from other equipment. (;-)
--
Regards, John Woodgate, OOO - Own Opinions Only. Phone +44 (0)1268 747839
) requires (inter alia ) testing incoming power AC
frequency from 0.95 to 1.05 of the nominal.
(As you may expect, the requirement is that the EUT must function
properly both during and after the tests.)
Noted, thank you.
--
Regards, John Woodgate, OOO - Own Opinions Only. Phone +44 (0)1268 747839
by people who are
apparently authoritative but are woefully ill-informed.
We now KNOW why the major problem with harmonic currents in the Americas
is 'hot neutrals', whereas in Europe there are several other problems as
well.
--
Regards, John Woodgate, OOO - Own Opinions Only. Phone +44 (0)1268 747839
no professional test engineer would use test equipment
that had not been calibrated at least annually!!!
The objection is to the 'expensive' word 'NAMAS'. Calibration, mainly by
less costly means, is certainly necessary.
--
Regards, John Woodgate, OOO - Own Opinions Only. Phone +44 (0)1268 747839
Fax +44
who answered my previous questions.
Shaike Raz
You can buy the identical BS EN55014-2 from http://www.bsi-global.org,
but your own national standards body can probably supply it:
http://www.sii.org.il
Note that EN55014-2 is not identical to CISPR14-2.
--
Regards, John Woodgate, OOO - Own
, not through DejaVu.
--
Regards, John Woodgate, OOO - Own Opinions Only. Phone +44 (0)1268 747839
Fax +44 (0)1268 777124. http://www.jmwa.demon.co.uk Foxhunters suffer from
tallyhosis. PLEASE do not mail copies of newsgroup posts to me.
---
This message is from
to supply
frequency variations?
--
Regards, John Woodgate, OOO - Own Opinions Only. Phone +44 (0)1268 747839
Fax +44 (0)1268 777124. http://www.jmwa.demon.co.uk Foxhunters suffer from
tallyhosis. PLEASE do not mail copies of newsgroup posts to me
the cost of meeting
the EC Directive on electromagnetic compatibility.' in August 1993.
It should probably be re-issued. I can e-mail a scanned copy (.pdf) if
anyone wants one.
--
Regards, John Woodgate, OOO - Own Opinions Only. Phone +44 (0)1268 747839
Fax +44 (0)1268 777124. http
noise from fans
and/or motors? Performance of a built-in loudspeaker?
--
Regards, John Woodgate, OOO - Own Opinions Only. Phone +44 (0)1268 747839
Fax +44 (0)1268 777124. http://www.jmwa.demon.co.uk Foxhunters suffer from
tallyhosis. PLEASE do not mail copies of newsgroup posts to me
that
the part is identifiable so that your procurement people can't buy
Celluloid ones from Sum Yung Gai (apocryphal purveyor of guaranteed
UNtraceable components to the unwary trade).
--
Regards, John Woodgate, OOO - Own Opinions Only. Phone +44 (0)1268 747839
Fax +44 (0)1268 777124. http
'.
--
Regards, John Woodgate, OOO - Own Opinions Only. Phone +44 (0)1268 747839
Fax +44 (0)1268 777124. http://www.jmwa.demon.co.uk Foxhunters suffer from
tallyhosis. PLEASE do not mail copies of newsgroup posts to me.
---
This message is from the IEEE EMC
+ flicker meter, it will meet
EN61000-3-3.
NOTE THAT EN61000-3-2 and EN61000-3-3 have recently been extensively
amended so as to relax many requirements.
--
Regards, John Woodgate, OOO - Own Opinions Only. Phone +44 (0)1268 747839
Fax +44 (0)1268 777124. http://www.jmwa.demon.co.uk Foxhunters
, and it also depends on whether
it has an antenna attached (presumably it does).
--
Regards, John Woodgate, OOO - Own Opinions Only. Phone +44 (0)1268 747839
Fax +44 (0)1268 777124. http://www.jmwa.demon.co.uk Foxhunters suffer from
tallyhosis. PLEASE do not mail copies of newsgroup posts to me
. UL will tell you this if you ask.
--
Regards, John Woodgate, OOO - Own Opinions Only. Phone +44 (0)1268 747839
Fax +44 (0)1268 777124. http://www.jmwa.demon.co.uk Foxhunters suffer from
tallyhosis. PLEASE do not mail copies of newsgroup posts to me
but
they are likely to produce it on request.
Or does someone knows a better newsgroup to ask for this? (please let me
also know the server, I'm now on pandora (belgium)).
There is another newsgroup, sci.engr.electrical.compliance but you won't
get a different answer there.
--
Regards, John Woodgate, OOO - Own
not have a very high level of immunity.
We can begin to see why this subject is controversial.
--
Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk
After swimming across the Hellespont, I felt like a Hero.
---
This message is from
document (which I have not
studied, so will not comment on) *may* also be an indication that there
is more emotion surrounding this subject than is desirable.
--
Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk
After swimming across the Hellespont, I felt like a Hero
.
In the future work of the IEC, it is to be hoped that other equally
senior experts will participate, so that a real international consensus
is established BEFORE any standard is adopted unilaterally in Europe,
either de facto or de jure.
--
Regards, John Woodgate, OOO - Own Opinions Only. http
if the EUT is large enough to subtend quite a
large angle at the receiving antenna, so that the measured field
strength is actually an average over a considerable volume of space.
--
Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk
After swimming across the Hellespont, I
, the Directive applies.
--
Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk
After swimming across the Hellespont, I felt like a Hero.
---
This message is from the IEEE EMC Society Product Safety
Technical Committee emc-pstc discussion
to be applied to the 24 V a.c. port.
--
Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk
After swimming across the Hellespont, I felt like a Hero.
---
This message is from the IEEE EMC Society Product Safety
Technical Committee emc-pstc
the product is 24VAC it falls
under low voltage/signal lines. Test is as a signal line.
No, the standard uses the term 'a.c. power port' in Table 4. It says
noting about 'mains'.
--
Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk
After swimming across the Hellespont, I felt
B limits are related to a 10 m separation of source
and potential victim, and that implies far-field conditions for
emissions above about 5 MHz.
--
Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk
After swimming across the Hellespont, I felt like a Hero
originally 'best
guess', over the years they have been altered if/when too many
complaints of interference were received by the spectrum-control
authorities.
--
Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk
After swimming across the Hellespont, I felt like a Hero
of 10^6 sites (Remember that even
in a small country there are probably 10^8 'sites'). So an uncompensated
measurement error that changes this figure to 10^6 - 1.001 does not seem
worth spending USD10 000 to track down.
--
Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk
, the 'No' answer *to the question asked* was
strictly correct. I was well aware of the document you cite and if it
had been relevant, I would have mentioned it.
The IEE document is not without its critics, if anyone is thinking of
treating it as Revealed Truth.
--
Regards, John Woodgate, OOO - Own Opinions Only
, not DC, power port.
--
Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk
After swimming across the Hellespont, I felt like a Hero.
---
This message is from the IEEE EMC Society Product Safety
Technical Committee emc-pstc discussion
with the fundamental.
Harmonics are integer multiples; it is overtones that are defined in
terms of resonances. In many mechanical systems, overtones are not exact
harmonic frequencies.
--
Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk
After swimming across the Hellespont, I
-like body.
Pegasus
Dragons
To name but a few !
AFAIK, none of these have ever lived at the eastern end of the
Mediterranean.
--
Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk
After swimming across the Hellespont, I felt like a Hero
' the water table as
a ground plane.
--
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After swimming across the Hellespont, I felt like a Hero.
---
This message is from the IEEE EMC Society Product Safety
Technical Committee emc
.
If this is a new product, you should be using EN61000-6-1. Look at
clause 8. It is indeed not reasonable to apply the mains surge test to a
24 V power port.
Make sure you explain this fully in your technical file.
--
Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk
After
and schematics). Instead it was about the IEC60417 Graphical symbols for
use on equipment (labels).
Go to http://www.iec.ch and search diligently. You will find out how to
get access to IEC60417 on line (not free!).
--
Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk
harmonics, we would have to rethink that,
correct?
Indeed.
--
Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk
After swimming across the Hellespont, I felt like a Hero.
---
This message is from the IEEE EMC Society Product Safety
legs,
so that they *appear* to have only four.
--
Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk
After swimming across the Hellespont, I felt like a Hero.
---
This message is from the IEEE EMC Society Product Safety
Technical
of the Compliance group
in the design process right ? with full power to sign off the design changes
IMHO, the European EMC and Low Voltage Directives effectively require
this to be the case.
--
Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk
After swimming across
because fuse specifications
are now so complex for the layman: 'F 1.6 A E 250 V'. Since it's at
least exceedingly difficult to ensure continued safety with a 'T 6.3 A L
32 V' fuse in this position (!), I think user-accessible fuses (i.e. no
tool required) have to go!
--
Regards, John Woodgate, OOO
and contact the IEC directly. There is a new
URL.
--
Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk
After swimming across the Hellespont, I felt like a Hero.
---
This message is from the IEEE EMC Society Product Safety
Technical
of a poly-phase system.
--
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After swimming across the Hellespont, I felt like a Hero.
---
This message is from the IEEE EMC Society Product Safety
Technical Committee emc-pstc
(obviously,
most of it was not safety approved))
My impression is that it does exactly what it is supposed to, but the
user does not follow the instructions. In fact, have you ever seem W E C
even read them? (;-)
--
Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk
After
by the central county library.
Where, more precisely, in England does this operate?
--
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After swimming across the Hellespont, I felt like a Hero.
---
This message is from the IEEE EMC
survived being a BSI Project Manager. (;-)
--
Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk
After swimming across the Hellespont, I felt like a Hero.
---
This message is from the IEEE EMC Society Product Safety
Technical Committee
are downloadable free from
http://www.iec/.ch
The examples of delays in revising or amending standards that were cited
by the OP are due to technical difficulties, not administrative delays.
--
Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk
After swimming across the Hellespont
stage.
--
Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk
After swimming across the Hellespont, I felt like a Hero.
---
This message is from the IEEE EMC Society Product Safety
Technical Committee emc-pstc discussion list
already adopted a cost-free policy, and the ITU will let you have
three publications free in any 12 months.
--
Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk
After swimming across the Hellespont, I felt like a Hero
I read in !emc-pstc that John Woodgate j...@jmwa.demon.co.uk wrote (in
flrep9a0m3d8e...@jmwa.demon.co.uk) about 'GTEM for full compliance
testing?', on Thu, 6 Dec 2001:
I read in !emc-pstc that Gelfand, David david.gelf...@ca.kontron.com
wrote (in DAE684A26044B6469EF0A1E1565116820F0AFC@semsl131
the product is.
It must be something unusual if you have to apply the Generic Standard.
What about 61000-3-2 and -3?
--
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After swimming across the Hellespont, I felt like a Hero
' step and in the '2951
MHz' step, both showing the signal at 3 dB down on its real level.
--
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After swimming across the Hellespont, I felt like a Hero.
---
This message is from
.
--
Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk
After swimming across the Hellespont, I felt like a Hero.
---
This message is from the IEEE EMC Society Product Safety
Technical Committee emc-pstc discussion list.
Visit our
technical file for using the method.
--
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After swimming across the Hellespont, I felt like a Hero.
---
This message is from the IEEE EMC Society Product Safety
Technical Committee
any emissions.
--
Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk
After swimming across the Hellespont, I felt like a Hero.
---
This message is from the IEEE EMC Society Product Safety
Technical Committee emc-pstc discussion
.
--
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After swimming across the Hellespont, I felt like a Hero.
---
This message is from the IEEE EMC Society Product Safety
Technical Committee emc-pstc discussion list.
Visit our web site
objects,
but clearly this is impracticable and unnecessary - iron-based pigments
also have these colours and are toxic only in huge quantities.
--
Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk
After swimming across the Hellespont, I felt like a Hero
UNLESS you ship the filter with it, and the manual must explain
that it is essential to use it, and give instructions on how to install
it. The draft new Directive changes this a bit, but the new Directive is
long-delayed and may never appear.
--
Regards, John Woodgate, OOO - Own Opinions Only
* to these conditions, you use the
tests in IEC60068, unless there is an environmental test standard
specific to your product.
--
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After swimming across the Hellespont, I felt like a Hero
to
customers, and the wiring to them.
--
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After swimming across the Hellespont, I felt like a Hero.
---
This message is from the IEEE EMC Society Product Safety
Technical Committee
standards, using your technical and professional judgement. You cannot
even delegate this responsibility to a test-house.
--
Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk
After swimming across the Hellespont, I felt like a Hero
% increase.
Migrating from a 4-layer board to a
6-layer board by adding 2 layers would result in the
6-layer board being 6/4 or a 50% increase.
That really is 50%.
--
Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk
After swimming across the Hellespont, I felt like
that the odd distance, 2.1 m, shows that the limit is
related to effects on aircraft instruments rather than anything else.
--
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After swimming across the Hellespont, I felt like a Hero
occur, but generally conducted emissions are stronger at low
radio frequencies, which are not radiated efficiently because the
equipment is physically smaller than a half-wavelength.
--
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After swimming across the Hellespont
.
--
Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk
After swimming across the Hellespont, I felt like a Hero.
---
This message is from the IEEE EMC Society Product Safety
Technical Committee emc-pstc discussion list.
Visit our web site
and papers on
corrosion testing. I doubt that there is a very well-informed web site,
but you never know with the web! The world authority on contact
corrosion might be a web enthusiast.
--
Regards, John Woodgate, OOO - Own Opinions Only. Phone +44 (0)1268 747839
Fax +44 (0)1268 777124. http
in the enclosure) for
absorption of certain RF?
The simple answer is 'with extreme difficulty'. This is something you
need an advanced text-book for, not a mailgroup response.
If you really mean 'absorption', and not 'screening effectiveness'.
--
Regards, John Woodgate, OOO - Own Opinions Only. http
. It appears that a 0.75 sq mm
cord could be 20 meters in length (0.92 ohms) and
still operate the overcurrent device.
The disconnection time in Europe has to be much less than 1 minute.
--
Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk
After swimming across the Hellespont
devices.)
Any other thoughts on this interpretation?
I believe you are correct.
--
Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk
After swimming across the Hellespont, I felt like a Hero.
---
This message is from the IEEE
the maximum short-circuit
current that can flow.
--
Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk
After swimming across the Hellespont, I felt like a Hero.
---
This message is from the IEEE EMC Society Product Safety
I read in !emc-pstc that Chris Maxwell chris.maxw...@nettest.com wrote
(in 83d652574e7af740873674f9fc12dbaa675...@utexh1w2.gnnettest.com)
about 'LISN Calibration', on Fri, 30 Nov 2001:
reference CISPR 16 or EN 55016
I don't think there is an EN55016.
--
Regards, John Woodgate, OOO - Own
'
training course will recognise this. *Anything* that is changed can have
'unexpected' effects, if you don't actively look for them.
--
Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk
After swimming across the Hellespont, I felt like a Hero
, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk
After swimming across the Hellespont, I felt like a Hero.
---
This message is from the IEEE EMC Society Product Safety
Technical Committee emc-pstc discussion list.
Visit our web site
as possible.
--
Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk
After swimming across the Hellespont, I felt like a Hero.
---
This message is from the IEEE EMC Society Product Safety
Technical Committee emc-pstc discussion list
, and what isn't.
There is no need to alter warranty documents that conform to the present
requirements (such as the statement about not restricting the customer's
legal rights), except to change the period from one to two years. AIUI.
--
Regards, John Woodgate, OOO - Own Opinions Only. http
compliance
from the date it is notified in the Official Journal. But it MUST be
used after the 'dow' date in its Foreword, which is the 'date of
cessation of presumption of conformity of the superseded standard'.
--
Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk
After swimming
(from http://www.iec.ch) or
the DIN equivalent, or find it in a library.
--
Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk
After swimming across the Hellespont, I felt like a Hero.
---
This message is from the IEEE EMC Society
, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk
After swimming across the Hellespont, I felt like a Hero.
---
This message is from the IEEE EMC Society Product Safety
Technical Committee emc-pstc discussion list.
Visit our web site
on the incoming supply. CISPR16-1 mentions
that this may be necessary and, by implication, allows it.
--
Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk
After swimming across the Hellespont, I felt like a Hero.
---
This message
understand that the
saxophone is a metal woodwind. Didn't it come from Brussels, like EU
Directives? (;-)
--
Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk
After swimming across the Hellespont, I felt like a Hero
vastly over-complicated - that huge
inductor is just crazy unless you really need it to carry 25 A. I made
one that will carry 10A without overheating for quite long enough to do
a test, and compares in performance quite well with a purchased product.
--
Regards, John Woodgate, OOO - Own Opinions
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