Lou,
It is impressive and my boss Doug Smith uses it during
some of his seminars. I have tried hitting the coins
in the bag with a hammer several times very near the
antenna - nothing. I even smacked two big screwdrivers
together on the metal near the antenna for several
minutes - nothing.
Posted for Jim Knighten:
From: Knighten, James L jk100...@exchange.sandiegoca.ncr.com
Subject: RE: Visible Light EMC
Date: Fri, 12 Mar 1999 08:45:31 -0800
To: Allen Tudor allen_tu...@pairgain.com, emc-p...@majordomo.ieee.org
Allen,
Electromagnetic
I am working on a project where some digitial signal processing electronics
will reside inside of a digital movie projector for a large theatre. The
digital projector does not use film. The projector will contain a Xenon Short
Arc Lamp of up to 7kW. The ignition voltage for the lamp is
Hello Everyone,
While reviewing the new EN 61326 standard I noticed that the test value for
AC power voltage dip/short interruptions (IEC 61000-4-11) is 0.5 cycle,
each polarity/100%.
I understand the 0.5 cycle and the 100%, the question that I have is with
each polarity. I am assuming that
I signed up for a mailing list from the IEC and this is my first receipt
from them Looks like it may prove useful in the long run, even if I have
to ignore some of it. Thought I would share it with you in case you
haven't seen this yet.
Regards,
Scott
s_doug...@ecrm.com
Regulatory Management Humor from a past employer.
Like most companies, the Regulatory department was considered a bottleneck in
the development cycle. Our Director (that's right, we had a Director of
Regulatory Compliance) always fought to get prototypes into our lab as soon as
possible to speed
Dear all
I am currently looking for a new job within the EMC industry. I have had 5
years experiance as a test engineer working for a UKAS accredited test
facility. If any one within the UK knows of any EMC jobs please could you
point me in the right direction. A current copy of my CV is
You should definitely check with IEC 1000-4-6 .
The usefulness of current probes is physically limited to 200 Mhz. The
higher the frequency the smaller the probe needs to be
and the lesser the interwinding capacitance is required. These are two
restraints that cross each other in opposite
hello group,
Let me emphasize that criterion B only requires any performance measurements
to be done AFTER
the surge test is done. During the test loss of function and/or performance
to ANY degree is allowed
as long as no change of operating status or loss of stored data happens.
Of course,
Wasn't Apollo 11 the one that was struck by lightning during launch?
My hat is off to all you NASA guys.
Brian
--
From: Lou Gnecco l...@tempest-inc.com
Sent: Thursday, March 11, 1999 3:47 PM
To: emc-p...@ieee.org
Subject:worst emc problem contest
Hello members!
My source believes that the Radio and Telecommunications Terminal Equipment
Directive will be published in the OJ in April and will take effect after
one year. What do you hear?
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Jeff,
I use folks in Europe, would you like their contact info?
Derek.
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Hello Douglas
I have often asked the same questions.
I found a site which had an article written by Keith Armstrong about Adding Up
Emissions.
The part that would interest you, as well as the other parts, is the section
Why CE+CE does not equal CE
Check site
Amund:
I think you have forgotten one aspect: the business aspect. The strict,
arcane, and constantly changing european specs artificially create business
for testing labs (like us). It is no coincidence that the specs were written
by representatives of the European Laboratories. (God bless them!
Doug,
Despite the sampling window, the spectrum analyzer has a wide open
front end. It is easily saturated by broadband signals, even though you
think you are only looking at say, 100 to 200 MHz, the front end amplifiers
see everything.
A lot of things have a piezoelectric effect,
dmck...@corp.auspex.com writes:
To whom it may concern,
Question: Is any retest of the sub-systems by themselves required?
If so, why so?
If not, why not?
Retest is required. Subsystems are generally tested as components or not
at all. If tested as a component,
From: kim.boll.jen...@i-data.com
To:emc-p...@ieee.org
Date: Fri, 12 Mar 1999 09:26:37 +0100
Subject: ISDN and transient protection
Reply-to: kim.boll.jen...@i-data.com
Can somebody tell me what I need to do for protecting an ISDN-S and -U
interface
Hello All
Does anybody know of any safety or EMC regulations that apply to passive
loudspeakers?
Two particular areas of concern have been raised by colleagues:
1) Stability tests, especially for North America (or anywhere else)
2) Insulation of terminals - I have heard claims that as a
We use a Yokogawa 3226 Universal Leakage Current Tester
together with a 3227 Test Box. The meter has both an AC and
an AC+DC current range, and switchable 1K, 1.5K, and 2K
input resistance. The test box has a polarity and an on-off switch to
simplify testing, and has a US mains socket into
Hello all !
I have compered the conducted emission limits for MIL-STD-461D (CE102)
and EN55022. In the identical frequency range it seems that there is a
gap of approximate 20dB between the limit lines. It was a surprise for
me that EN55022 have lower limits than CE102, even though the EN55022
Hi Jeff:
Quotes from the 1996 NEC:
110-2. Approval. The conductors and equipment required
or permitted by this Code shall be acceptable only if
approved.
Approved: Acceptable to the authority having jurisdiction.
90-7. Examination of Equipment for Safety. For specific
items of
After reading a number of responses Re: Awards for Worst EMC/PS
qualities, I feel it will be refreshing to see responses on brilliant
EMC solutions.
Thanks,
Sainath
--
Sainath Nimmagadda, Ph.D.
Avant! Corporation
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