I have got some good results using a choke in the safety ground (or
protective earth-PE, as you wish) for reducing conducted emissions in
switched mode power supplies.
I also remember that I read somewhere (i think it was Clayton Paul's book)
that the use of this choke on safety wire is a
Hello List,
I friend of mine is manufacturing a device for surge protection (for
residential, commercial and industrial environments) and he is interested in
selling this equipment in the European Market.
I'd like to know which european standards (EN's, IEC) are related to this
kind of device.
me most, but I think that I
could forget someone! ;-) and it would no be just...
Once again, I'd like to emphasize the importance and relevance of this list
to my work and another works of research world-wide.
Best Regards,
Muriel Bittencourt de Liz
August, 11, 2003
Florianópolis, Santa Catarina
confuse. Please reply to me if I have not
been clear enough.
Best Regards,
Muriel Bittencourt de Liz
This message is from the IEEE EMC Society Product Safety
Technical Committee emc-pstc discussion list.
Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/
To cancel your
Group,
I have a doubt concerning radiated emissions measurement:
- For radiated emissions measurement of switched mode power supplies using a
TEM cell, should I leave the loads of the supply inside or outside the
cell?? My TEM cell have filtered connections for DC loads.
Thanks in advance for
these
deficiencies of lumped circuit theory??
- Can I, only using stray resistances, capacitances and inductances, model a
circuit until it's simulated behavior achieve a good aproximation with
measured data?
Thanks in advance and Best Regards!!
Muriel Bittencourt de Liz
Hello Group,
For EMC measurements (conducted and radiated emissions), electromagnetic
fields measurements (via antennas), what is the difference between using a
EMI Receiver or a Spectrum Analyzer??
Some guesses that I've been thinking are:
- The Receiver is more accurate than the Spectrum
Group,
I was doing some tests of conducted EMI measurements according to CISPR 22,
Class B. This standard uses the 150kHz to 30MHz frequency range.
The equipments under test (EUT) that I tipically use are switched mode power
supplies (SMPS), mainly with flyback topology. In a number of these
Hello Group,
Could someone confirm to us if the IEC 61000-4-3 standard is the right one
to verify the radiated electromagnetic fields in pacemakers?
We are using this standard and the following limits:
- 80MHz-2.5GHz, 10V/m
Could someone tell us if this procedure is the correct one?? Or there
Hello Group,
We already know the standards related to human exposure to electromagnetic
fields (e.g. ANSI/IEEE). However some people have asked us if there is any
standard/recommendations limiting the exposure of forests, lakes/rivers,
animals, etc to RF fields.
Do you know any FDA and EPA (or
Robert and EMC-PSTC,
According to some books of physics (e.g., Halliday and Resnick) and Web
pages concerning measurements:
http://www.chemie.fu-berlin.de/chemistry/general/si_en.html#prefixes
The right usage of kilohertz is kHz, and not KHz.
Best Regards
Muriel
- Original Message
and Best Regards!
Muriel Bittencourt de Liz
**Group of Electromagnetic Compatibility**
Universidade Federal de Santa Catarina
Florianópolis, SC
Brasil
---
This message is from the IEEE EMC Society Product Safety
Technical Committee emc-pstc discussion list
this
separator myself. Any other suggestion and comments are greatly appreciated.
Best Regards,
**
Muriel Bittencourt de Liz
Ph.D. Student
Federal University at Santa Catarina
Florianópolis, SC
Brazil
energy when I add a filter?? It cannot be lost...
- ... And, supposing that the energy keeps arrested inside the equipment, isn't
it worse for radiated emissions?? i.e., it can increase the level of radiated
emissions??
Thanks in advance for your attention.
Regards,
Muriel Bittencourt de Liz
Hello Group,
I'd like to know what EMC Standards are used for compliance of medical
equipment in Europe.
I've already know that IEC 60601-1 and CISPR 11 (ISM equipment) are applicable
standards. Is there any additional standard that does apply?
Thanks in advance for your help.
Best Regards
Hello Group,
In a transformer's set of specifications that I have, there is one named
HVF. Does anyone know what it means??
Thanks and Best Regards
Muriel B. de Liz
Post-Graduate Student, EMC for Power Electronics.
---
This message is from the IEEE
Hello Group,
What are the differences that result using:
1. A Spectrum Analyzer (SA)
or
2. A Receiver
When I make measurements of conducted emissions of an equipment??
Best Regards
Muriel
---
This message is from the IEEE EMC Society Product Safety
Hello Group,
I'd like to know what requirements apply to the following standards:
- FCC 15 (47 CFR 0-19)
- FCC 68 (49 CFR 40-69)
Thanks in advance
%%
Muriel Bittencourt de Liz
Electrical Engineering Department
Federal University at Santa Catarina
Florianópolis, SC
---
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majord...@ieee.org
with the single
Muriel
***
Muriel Bittencourt de Liz - Test Engineer
Lab of Applied Electromagnetism for Engineering
Dept. of Electrical Engineering
Federal University at Santa Catarina State
Florianópolis, Santa Catarina State
Brazil
In a message dated 6/28/01, Geoff Lister writes
Hello Group,
I'd like to know if telephone devices (plain telephone devices) must be tested
for conducted emissions (CISPR 22, Class B). And if they must, what is the
proceeding for testing them? Should I test with the telephone in stand-by (no
calls) or during a call??
Thanks in advance for
to ask
the basic questions sometimes.
Well, I think that's all. Thanks in advance for those who can help me.
Best Regards
Eng. Muriel Bittencourt de Liz
EMC Testing and Troubleshooting
Group of Conception and Analysis
(equipment with DC feeding through the LISN),
the three detectors are still needed? Why?
- The Quasi-Peak and the Average detectors can be viewed as filters
that reduce the EMI seen by the receiver?
Thanks in advance for the help.
Best Regards
Muriel
==
Muriel Bittencourt de Liz - EMC Engineer
Group
I make my words the words of Gert. There's a lot of interesting
questions that are answered privately and the group loses...
Regards
Muriel
Gert Gremmen wrote:
hello George,
But we can't.
Could you resume the results of the answers for the group.
And : IN GENERAL
Could the members
receivers?? Is
this the goal of the regulations imposed by the agencies (CISPR, FCC,
etc.)???
Thanks in advance for the answers
Regards
Muriel Bittencourt de Liz
Group for Conception and Analysis of Electromagnetic Devices
GRUCAD/EEL/UFSC
Florianópolis, SC
Brazil
Hello Group,
There are some doubts about some parameters of an EMC receiver that I'd
like to understand better:
- IF bandwith: What it mean/is? How do I set it up? If I have a HF
signal, what IF is better? Or if I have a low freq. signal, what is the
better IF?
- Measurement time: If I don't
Hello Group,
My doubt is on the question below:
If I am a manufacturer of surge protection devices for cable TV
networks, what standards should I comply with (IEC, ANSI, IEEE, etc.)???
Thanks in advance
Muriel
Florianópolis, Brasil
---
This message is
Hello Group,
I'd like to know if is it safe for somebody to have his office 7 meters
away from a high voltage line (132KV, 50Hz)?? The working time of the
person is 8 hours a day.
Thanks in advance
Muriel
---
This message is from the IEEE EMC Society
Jim and everybody who answered,
Thanks a lot for making this subject clear for me... One more time, the
list shows all its power so solve problems, even worldwide!
Best Regards
Muriel
---
This message is from the IEEE EMC Society Product Safety
Group,
I think this discussion of language is very important. Why? I'll speak
for myself...
During the last centuries/years, most of the third-world or
developing countries (as you prefer) has adopted the idea of buying
technologies instead of developing its own. Together with that, has
come
(the one
that's in the three pin plug) should be at the same ground than the
ground plane?
Thanks in advance and Regards!
Muriel
--
8-)8-)8-)8-)8-)8-)8-)8-)8-)8-)8-)8-)8-)8-)8-)8-)8-)8-)8-)8-)8-)8-)8-)
Muriel Bittencourt de Liz, M.Sc. - EMC Engineer
GRUCAD - Group for Conception Analysis
)
###: Is it right?
Well! that's all for today. Thanks in advance!
Best Regards
Muriel
--
8-)8-)8-)8-)8-)8-)8-)8-)8-)8-)8-)8-)8-)8-)8-)8-)8-)8-)8-)8-)8-)8-)8-)
Muriel Bittencourt de Liz, M.Sc. - EMC Engineer
GRUCAD - Group for Conception Analysis of Electromagnetic Devices
Santa Catarina Federal
, but potentially more gain. Does the 30 dB attenuation have to be
inherent in the coax, or can you use an external pad? Answer these
questions, and I can tell you exactly what to get.
--
8-)8-)8-)8-)8-)8-)8-)8-)8-)8-)8-)8-)8-)8-)8-)8-)8-)8-)8-)8-)8-)8-)8-)
Muriel Bittencourt de Liz, M.Sc. - EMC
Bittencourt de Liz, M.Sc. - EMC Engineer
GRUCAD - Group for Conception Analysis of Electromagnetic Devices
Santa Catarina Federal University - UFSC
PO Box: 476 ZIP: 88040-900 - Florianópolis - SC - BRAZIL
Phone: +55.48.331.9649 - Fax: +55.48.234.3790
e-mail: mur...@grucad.ufsc.br
ICQ#: 9089332
).
--
==
Muriel Bittencourt de Liz
GRUCAD - Group for Conception Analysis of Electromagnetic Devices
Santa Catarina Federal University - UFSC
PO Box: 476 ZIP: 88040-900 - Florianópolis - SC - BRAZIL
Phone: +55.48.331.9649 - Fax: +55.48.234.3790
e-mail: mur...@grucad.ufsc.br
ICQ#: 9089332
Alternativa
Regards
Muriel
--
==
Muriel Bittencourt de Liz
GRUCAD - Group for Conception Analysis of Electromagnetic Devices
Santa Catarina Federal University - UFSC
PO Box: 476 ZIP: 88040-900 - Florianópolis - SC - BRAZIL
Phone
, the interference may be due to radiated
emissions.
George
-Original Message-
From: Muriel Bittencourt de Liz [mailto:mur...@grucad.ufsc.br]
Sent: Wednesday, September 01, 1999 12:55 PM
To: Lista de EMC da IEEE
Subject: Doubt on household equipment interference
Dear Members
I'd
Bittencourt de Liz
GRUCAD - Conception Analysis of Electromagnetic Devices Group
Federal University of Santa Catarina
PO Box: 476 ZIP: 88040-900 - Florianópolis - SC - BRAZIL
Phone: +55.48.331.9649 - Fax: +55.48.234.3790
e-mail: mur...@grucad.ufsc.br
ICQ#: 9089332
-
This message is coming from
is with the vendor..
If someone has experience with this, please feel free to do any
comments...
Regards
Muriel
--
==
Muriel Bittencourt de Liz
GRUCAD - Conception Analysis of Electromagnetic Devices Group
Federal University of Santa Catarina
-mail directly to me.
Thanks in advance for the ones who can help.
Best Regards
Muriel
--
==
Muriel Bittencourt de Liz
GRUCAD - Conception Analysis of Electromagnetic Devices Group
Federal University of Santa Catarina
PO Box: 476
help!
Best Regards,
Muriel
--
==
Muriel Bittencourt de Liz
GRUCAD - Grupo de Concepção e Análise de Dispositivos Eletromagnéticos
Universidade Federal de Santa Catarina
Caixa Postal - 476 88040-900
administrators).
--
==
Muriel Bittencourt de Liz
GRUCAD - Grupo de Concepção e Análise de Dispositivos Eletromagnéticos
Universidade Federal de Santa Catarina
Caixa Postal - 476 88040-900 - Florianópolis - SC - BRASIL
Fone
equipment..
Thanks in advance
Muriel
--
==
Muriel Bittencourt de Liz
GRUCAD - Grupo de Concepção e Análise de Dispositivos Eletromagnéticos
Universidade Federal de Santa Catarina
Caixa Postal - 476 88040-900 - Florianópolis - SC
with the single line: unsubscribe emc-pstc (without the
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==
Muriel Bittencourt de Liz
INEP - Instituto
administrators).
--
==
Muriel Bittencourt de Liz
INEP - Instituto de Eletronica de Potencia
Universidade Federal de Santa Catarina
Caixa Postal - 5119
88.040-970 - Florianopolis - SC - BRASIL
Phone: +55.48.331.9204 - Fax: +55.48.234.5422
e
Hello All,
I have a LISN from EMCO and it has a Ground Choke. What's the goal of
this Ground Choke? Is it really needed in the conducted measurements?
Could somebody make this clear to me?
Thanks in advance
Muriel
--
==
Muriel Bittencourt de
doing right?
# is it possible to use a transformer?
# isn't the transformer acting like a unintentional filter?
Any help will be welcome.
Sincerely
Muriel
--
==
Muriel Bittencourt de Liz
INEP - Instituto de Eletronica de Potencia
Universidade
with this?
Best Regards
Muriel
--
==
Muriel Bittencourt de Liz
INEP - Instituto de Eletronica de Potencia
Universidade Federal de Santa Catarina
Caixa Postal - 5119
88.040-970 - Florianopolis - SC - BRASIL
Phone: +55.48.331.9204 - Fax
Hello
I'd like to know if anyone could pass me the schematic of the LISN used
for CISPR22 measurements, with the value of inductors, capacitors and
resistors.
Thanks
Muriel
--
==
Muriel Bittencourt de Liz
INEP - Instituto de Eletronica de
--
==
Muriel Bittencourt de Liz
INEP - Instituto de Eletronica de Potencia
Universidade Federal de Santa Catarina
Caixa Postal - 5119
88.040-970 - Florianopolis - SC - BRASIL
Phone: +55.48.331.9204 - Fax: +55.48.234.5422
e-mail: mur...@inep.ufsc.br
Homepage: http://www.inep.ufsc.br
information will be welcome.
Muriel
--
==
Muriel Bittencourt de Liz
INEP - Instituto de Eletronica de Potencia
Universidade Federal de Santa Catarina
Caixa Postal - 5119
88.040-970 - Florianopolis - SC - BRASIL
Phone: +55.48.331.9204 - Fax
Hello
Does anyone have any information about a software for EMI filter design?
Any information will be welcome.
Sincerely
Muriel
--
==
Muriel Bittencourt de Liz
INEP - Instituto de Eletronica de Potencia
Universidade Federal de Santa
--
Muriel Bittencourt de Liz - Mestrando
Instituto de Eletronica de Potencia
Universidade Federal de Santa Catarina
Caixa Postal - 5119
88.040-970 - Florianopolis - SC - BRASIL
Phone: +55.48.331.9204 - Fax: +55.48.234.5422
e-mail: mur...@inep.ufsc.br/Internet:www.inep.ufsc.br---BeginMessage
: run-time error 6 - overflow.
Could anyone help me with these??
--
Muriel Bittencourt de Liz - Mestrando
Instituto de Eletronica de Potencia
Universidade Federal de Santa Catarina
Caixa Postal - 5119
88.040-970 - Florianopolis - SC - BRASIL
Phone: +55.48.331.9204 - Fax: +55.48.234.5422
e-mail
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