That is within the grand plan of the empire. The OJ has now listed EN62368-1 in
the LVD harmonized standards list. 60950-1 has not be assigned an 'expiration'
date per the standards list (as of last week), but there are dates in the
standards themselves. TUVR, ETL, UL, etc have web pages that pr
http://eur-lex.europa.eu/legal-content/EN/TXT/HTML/?uri=CELEX:52015XC1028(01)&from=EN
The chemical principle of local concentration vs equilibria, and likelihood for
direct exposure to users, seems to have been ignored.
Brian
Sr Janitorial Assistant For the Vulcan Science Academy
-
---
Makes little sense to this simple mind. The manufacturer's D of C has nothing
to do with any particular NB, and an NB cannot issue a product declaration per
meaning of ISO17050-1, -2. The D of C could, and should, cite the NB's report
as basis for presumption of conformity to particular directiv
According to a speaker at an EMC society chapter meeting, final release for
461G at end of 2015. The last draft for review was published in March 2015.
There are still no test methods for Klingon cloaking device interference.
If feeling adventurous, project reference is EMCS-2013-001. The comman
Dunno, as has been at least three or four years since any appliance work done,
but do remember problems with this document. The SCC indicates the requirement
here: https://www.scc.ca/en/ord/551
But the CSA standards store (at least when last looked) had no such standard
available. In general tec
IEC60601-1-2 points to the IEC61000-4-X and -6 stuff for immunity, and
IEC60601-1-11 extends EMC stuff for home healthcare equipment. The latest
edition of -1-2 has some interesting stuff about test levels in annex E, and
all medical EMC is based on intended end-use environment with no allowance
'Cars' and 'busses' are two different regulatory subjects. Requirements
standards can range from nothing to ISO 26262 (nee IEC61508); and from nothing
to CISPR25/VCA for EMC.
And happen to know that Crestron has, or did have, more than one compliance
engineer. Your local compliance engineer sho
Not aware of specific products, but as you probably know, NEC section 330.10
has stuff for wet environment. UL has CCNs for this particular classification,
but cannot remember.
Brian
From: Adam Dixon [mailto:lanterna.viri...@gmail.com]
Sent: Tuesday, December 01, 2015 10:33 AM
To: EMC-PSTC@LI
For the additional substances published in June 2015, is there an associated
effectivity date that a company must publish a so-called 'REACH-163' statement,
even where the additional chemicals are not part of construction?
Thanks,
Brian
-
Thread has some good artifacts of compliance engineering philosophy. But
industry has determined some resultant intended side effects.
1. EMC standards and limits are referenced by some electrical efficiency
regulations to determine if scoped for a product.
2. Some AHJs and governm
Do not disagree with this point, and the Klingon High Command has forbidden
disagreement with Mr. Woodgate, for many a good reason of canon, there is this:
"This generic EMC immunity standard is applicable if no relevant dedicated
product or
product-family EMC immunity standard exists."
It woul
Do not disagree in principal, but the Type Tests and construction requirements
of L/N/PE terminals vs L1/L2/N terminals can vary with the scoped product
safety standards and building code.
Brian
From: Nyffenegger, Dave [mailto:dave.nyffeneg...@bhemail.com]
Sent: Tuesday, December 15, 2015 12:0
Have also been looking at this for the 6th edition:
" Its emission limits apply now to low voltage (LV) a.c. and d.c. power ports,
irrespective of the direction of power transmission."
As CISPR11 is the family standard for 'ISM', scope for PV stuff seems intended.
And there is also IEC61000-6-3.
Dunno, perhaps you might want to look at this stuff:
http://value.rohde-schwarz.com/vi/value/emc-precompliance.html
Keysight nee Agilent nee HP is recommending the N9000ACXA for pre-comp; and
have seen on ebay for under $14k USD.
Am an EMC amateur, and do very little pure EMC work, but prefer th
Saw this on the SpaceX web site.
http://www.spacex.com/careers/position/8459
damn, makes me wish that my specialty is EMC.
-
This message is from the IEEE Product Safety Engineering Society emc-pstc
discussion list. To post a mess
Not certain of your end-use construction, but for 60065, " Conductive parts,
covered only by lacquer, solvent-based enamel, ordinary paper, untreated
textile, oxide films or beads are considered to be bare...". Wire rated as DI
or RI can be considered adequate (IEC60950 anx U and/or UL2353), but
Also, forgot to let ya know that after December 2015 (that would be now for
those that believe time exists), KN22 and KN24 will no longer normative for
Korea.
Brian
-Original Message-
From: Brian O'Connell
Sent: Tuesday, January 26, 2016 2:54 PM
To: EMC-PSTC@LISTSERV.IEEE.ORG
Su
Have never seen an 'official' translation of Korea standards, but the IECEE
published a table for clause-equivalent differences and the EU trade site has
published several guidebooks.
Also, your side of the pond has entered into a formal agreement with Korea
regulatory bodies to enable easier (
See terminology in 47 CFR 15.33, similar stuff in CISPR32.
Brian
From: Gary McInturff [mailto:gary.mcintu...@esterline.com]
Sent: Thursday, January 28, 2016 11:16 AM
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: [PSES] Highest clock frequency in a device.
I was looking through standards I have but ca
Correct - CISPR22 not scoped for automotive end-use installation. And there is
additional stuff for ambulance (60601-1-2), where there are additional immunity
and emissions requirements. Also, class A stuff will probably degrade P25 and
TETRA radio systems.
Methinks mundane ACMA requirements no
Starting last year, noticed that some NRTLs are charging twice for same audit.
For example - same equipment category, same file reference, but getting charged
factory FUS audit fees for both audit of products in production and 'Production
Ready'. Previously, was charged for PR audit only when no
cts. The compliance engineering community should push back. No
longer view many compliance agencies as being part of a sustainable and
rational economic model.
Brian
-Original Message-
From: Richard Nute [mailto:ri...@ieee.org]
Sent: Thursday, February 11, 2016 11:31 AM
To: Brian O'Conn
ement in the construction
report.
Brian
-Original Message-
From: Richard Nute [mailto:ri...@ieee.org]
Sent: Thursday, February 11, 2016 2:27 PM
To: Brian O'Connell; EMC-PSTC@LISTSERV.IEEE.ORG
Subject: RE: [PSES] NRTL invoices
When I was hosting the FUS, I had a rule that
inspection
Reference articles 250 and 690 of the NEC (NFPA70). Canada and Mexico code
similar.
Brian
From: Boštjan Glavič [mailto:bostjan.gla...@siq.si]
Sent: Monday, February 15, 2016 9:05 PM
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: [PSES] grounding of output of solar inverter
Dear experts,
Is anyone fa
-PDFs/SAV4704.pdf
Brian
-Original Message-
From: Brian O'Connell [mailto:oconne...@tamuracorp.com]
Sent: Tuesday, February 16, 2016 9:28 AM
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: Re: [PSES] grounding of output of solar inverter
Reference articles 250 and 690 of the NEC (NFPA70). Canad
Typically, your calibration contractor will be the repair facility of 'choice'.
And many test equipment rental companies have in-house repair shops that will
do outside stuff.
Brian
From: Gary McInturff [mailto:gary.mcintu...@esterline.com]
Sent: Wednesday, February 17, 2016 9:42 AM
To: EMC-PS
Generally agree, but government people can be capricious. For several years,
have loaned a 'measurement device' to customers having issues with interfacing
our stuff to their stuff. The device is marked "Property of the Empire. For
Test and Evaluation Only". The device is a small plastic box wit
Assume reference is to nitroglycerin; approximately 1MJ resultant release for
construction-style (25 cm/200gm) stick.
'Gasoline' is not determinate but can probably be found in CRC.
Brian
-Original Message-
From: Macy [mailto:m...@basicisp.net]
Sent: Friday, February 19, 2016 9:59 AM
Played with this stuff in the military. TNT is NOT the composition of
industrial or military 'dynamite'.
Typical dynamite, at least the stuff we played with, is cornstarch binders +oil
+TNT+RDX; and there were some compositions that were buffered with sodium
carbonate. Dynamite, depending on th
.com
The opinions expressed are my own and do not necessarily reflect those of my
employer.
-----Original Message-
From: Brian O'Connell [mailto:oconne...@tamuracorp.com]
Sent: Friday, February 19, 2016 2:44 PM
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: Re: [PSES] Energy in certain items
Actually ΔE ≈ Δmc2, but not relevant because energy (for ICE) is based on
available molecular bond energy, so Sir Isaac’s kinetic models will prevail.
Although probably relevant for a small percentage of photonic energy released
during explosion or rapid combustion.
Brian
-Original Me
Had to do this for an Asian LE and fire LMR radio customer, and the metrics are
sometimes referenced as 'psychoacoustics' (we called it psychotic acoustics).
And Ken is correct, this is difficult stuff to measure in a consistent and
reproducible manner.
Should reference ITUR468, unless the cust
The adjective ancillary is intended to mean auxiliary or subordinate.
An EPS or battery can be considered as non-effective 'ancillary' equipment only
where the selection of various models or sources do not affect the outcome of
the EMC or safety reports.
Brian
From: McDiarmid, Ralph [mailto:
Concur about below vendors and Ed's comments.
Need to look at the power supply installation instructions and Conditions of
Acceptability. Wrote some install instructions for a model series stating that
output is floated, so grounding of output not recommended unless noise currents
returned to/u
Generally agree, but be careful with using a spray-type application for the
accelerant. Prefer to use an eye dropper. Had a tech, while doing tests for
UL5085-3, that caught a small linear transformer on fire because the (very
volatile) accelerant had not completely evaporated after spray applic
UL and CSA have published specific procedures and material recommendations for
T/C use in Type Tests. Most NRTLs have some type of CIP program where a sample
power supply is sent to a company lab to verify test technique via TRF data
veracity.
So the moral of the story is to use whatever techni
Would think that the normative reference would be IEC61051-2 for IEC/EN61010-1
report and requirements. UL1449 only referenced in UL61010-1. Cannot remember
specifics, but SPD classifications not exactly same. SPD type can be determined
by national differences, where used in equipment panels, a
concern the high operating
> temperature may bring negative effect to solder joints (become soft solder
> and cracked joint during vibration) and other components such as solid state
> capacitors and electrolytic capacitors, etc.
>
> Regards.
>
> Scott
>
>
>
>
Correct –> CSA No. 0.4 specifies 40A test level.
Brian
From: Mike Sherman - Original Message - [mailto:msherma...@comcast.net]
Sent: Thursday, March 03, 2016 11:52 AM
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: Re: [PSES] Insulation testing
I've always thought the Canada requirement was 40
Just remembered that OP was asking about immunity, not emissions, so change
IEC61000-6-4 to -2.
Brian
-Original Message-
From: Brian O'Connell
Sent: Thursday, March 03, 2016 1:59 PM
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: RE: [PSES] Standards for Photo Voltaics Inverter
Assum
Assumption that this is EMC question. Insufficient information on your inverter
enviroment. For industrial in U.S. could need to look at part 18, otherwise
look at the normative references in IEC61000-6-4. For office/residential
micro-grid, just the mundane CISPR22/24 and 47CFR15 stuff.
If this
New registration requirements (991/2015) in effect for Egypt. Look at GOEIC
regulations, probably on the Trade and Industry Ministry site.
Egypt tends to adopt and harmonize with EU stuff, so import cert with
declarations per the applicable directives, and the respective 3d party reports
is wha
Joe is probably the subject-matter expert for this stuff. My NEBS experience is
based on the grand total of ONE project. Depends on the carrier/provider. Some
service providers now use their own (internal) version of GR-core standards.
While original NEBS not scoped for pole-mounted stuff, the n
People more familiar with the Brussels mime and actor troupe needs to expound.
But for U.S., the IEC-based standards, even where adopted by ANSI and listed by
the OSHA NRTL site, cannot be released to the public domain because the
original IP belongs to an NGO not financed by the public. Suppose
Did some PV stuff before EN62109-2 published. Wrote the report in-house; much
was based on the IEC62109-1 and UL1741 assessments, with some additional
construction and Type Test data stuff. EMC was just good ol' CISPR11,22, and 24
stuff, along the usual suspects (V and frequency tolerances, THD,
Off the top of my pointy head - CSA No 223, UL1310, UL1741 are examples where
this marking phrase could be required. There are no known Klingon national
versions of any standards with this warning statement. The meaning is literal,
but 'indoor' is typically defined via the IP rating that would b
The current *style* is the Risk Assessment. The RA is an assumed probability.
Dunno, as much of the supposed 'probability' for failure does not map well with
resultant MTBF numbers. The sample space is not the probability space, but
probability space does contain a sample space. American enginee
ield data to do LDA or Weibull. Otherwise, we have no way of
reliably predicting (at least until a product recall must be issued) the
long-term effectiveness of implemented safeguards.
Brian
-Original Message-
From: Nyffenegger, Dave [mailto:dave.nyffeneg...@bhemail.com]
Sent: Wednesda
Not much reading of machinery safety stuff. Does ISO13849-1 or IEC62061 list
ISO12100 as the normative ref for RA?
Per equipment not scoped by machinery directive, what would be rationale of
using ISO12100 as basis for presumption of conformity?
Thanks,
Brian
From: Gary Swale [mailto:gary.sw.
UL finally understands that their 'effective' dates is not authoritative (for
those not on this side of pond, use of new version of safety standards belongs
to OSHA or the controlling governmental agency for that type of equipment).
Typically, OSHA does not set obsoletion dates for safety standa
Power conversion equipment companies have traditionally been very conservative
with PCB material ratings. Over the last 25+ years, have noticed significant
variability in the mechanical, chemical, and electrical properties of resist
for PCBs used in power conversion equipment, all from reputable
PQ monitor is not same animal as power analyzer. If for "occasional field use",
do not understand your I/O requirements.
For PQ/datalogging, make my own stuff. For power analyzer, tend to prefer
Voltech and Fluke. Note that Voltech PAs were transferred to Tektronix.
Rent the most likely candida
Gave a (extremely) short intro at APEC on the *design* of Type Tests for power
conversion stuff. There were two experienced (grey beards) design managers that
both expressed surprise at the depth and difficulty of standards analysis and
its effects on compliance testing. And based on my experien
1. intended market?
2. end-use equipment standard?
3. Class 'B' does not indicate that the windings or insulation can be anywhere
near 130 degC (max of 120 allowed). Class 155?
My employer adopts recognized EISs published by the major suppliers for our
transformers - see the UL materials databas
>From my experience, the European NCBs seem happy to accept construction
>reports using an UL-recognized EIS, which may be part of the reason for that
>IEC60085 application statement. Should be noted that the STC for UL1446 is
>'forking the project' for distribution transformers. Reason is that
Dunno if this is understood. For typical component SMPS per 60950 or 62368,
evaluation of the transformer is same regardless of the material thermal class
required. For the over 100 power supply submittals done last ten years, did not
see any significant difference in assessments whether class 1
Rich,
Congratulations on your IEEE Fellow appointment. Do we address you as ‘Sir
Richard’ ?
The tablet was probably trioxane solid fuel; typically in a tablet or bar
from-factor. See Mil-F-10805. In addition to being used for heating C-rats and
MREs, were also used for gas mask training by ign
Similar articles, but somewhat different view:
http://www.ti.com/lit/an/scaa120a/scaa120a.pdf
https://www.maximintegrated.com/en/app-notes/index.mvp/id/4466
'Jitter' is both a specification and a measurement method that is specific to
the equipment and the protocol. Its use for EMC characterizati
Interesting. Two questions:
1. Is the discharge actually multi-path(parallel), or is the image exposed for
period of time where multiple, sequential streamers were recorded?
2. Would there not also be significant current flowing that is less than the
1MHz rating of the probe?
Brian
-Origina
: Brian O'Connell; EMC-PSTC@LISTSERV.IEEE.ORG
Subject: Re: [PSES] High Voltage target for measuring currents of HV events
The first picture of Doug is not so surprising...
The next one with the blue corona cloud and at least three discharges is
interesting. Was the HV increasing on a ramp of
Appreciate the link to last med standards list per OJ. You people deserve an
excellent burrito for lunch.
Noted that EN60601-2-12 still has no withdrawal date and nothing for
EN80601-2-12. But there are some EU states have published national versions of
EN80601-2-12 that indicate a DoW for EN60
Love the internet as a platform; hate the WWW. A customer pointed me to the
below link as an authoritative source. Told the sales manager that the
customer's purchasing manager needs to let his engineers make technical
decisions and to restrict his WWW use to viewing cat videos and working on hi
Different things. 100VA for Class 2 and 3 stuff (see UL1310/CSA223 and
UL5085-3), and 240VA is for LPS (see 2.5 in 60950-1). There are other numbers
for some industrial stuff.
The energy limit for a good burrito, based on empirical data, is approximately
400VA
Brian
-Original Message-
Moi hath misspoke, as 240 VA is part of SELV requirements (Canada national dif)
and the limit for a 60Vdc mains, and definition for hazardous energy level for
ITE.
Brian
-Original Message-
From: Richard Nute [mailto:ri...@ieee.org]
Sent: Wednesday, June 08, 2016 2:21 PM
To: EMC-PSTC@LI
The 15W is the *dissipated* power level to determine if PIS. The standard is
somewhat ambiguous because it uses the term 'location' in definition, but
'circuit' in 6.2.
Brian
-Original Message-
From: Richard Nute [mailto:ri...@ieee.org]
Sent: Wednesday, June 08, 2016 4:58 PM
To: EMC-P
Nothing that follows necessarily represents the opinions or policies of my
employer or my dog; and certainly not my cat. Did a quick browse (ok, not so
quick - took several hours for the transformer temp to stabilize). But will
have to clear with senior management before more of my thought-provo
Mr. McAuley,
Has been my experience that the better test equipment rental companies and
calibration labs have the more competent repair shops. Would not recommend
shipping your instrument across the pond.
Brian
-Original Message-
From: John McAuley [mailto:john.mcau...@cei.ie]
Sent:
Responses to various thread posts below. Assumption is that the wall wart is
not certified as a component, but as end-use item, and is Class II construction.
1. " A example: the 60950 power supply does not necessarily meet insulation
requirements (among other requirements) of the 60065."
Class
len-heath.com]
Sent: Thursday, June 16, 2016 1:01 AM
To: Brian O'Connell; EMC-PSTC@LISTSERV.IEEE.ORG
Subject: RE: Power Supply Safety approval
Hello Brian.
The wall wart psu is class II construction and is LPS/LCC.
The CB report for the power supply was issued under the responsibility of UL
and spe
Dunno. You might consider incorporating the RCM onto your existing marking
nameplate, and not use a separate label. The ACMA has downloadable artwork. And
4417.1 requires that the mark be next to the model ID.
Brian
From: Kunde, Brian [mailto:brian_ku...@lecotc.com]
Sent: Monday, June 20, 201
Found the AMA release here:
www.ama-assn.org/ama/pub/news/news/2016/2016-06-14-community-guidance-street-lighting.page
Almost ten years ago, saw an article that AMA says color over 3000 K not good.
And much external LED stuff seems to be 4000 K or more. Am still waiting for
data indicating actua
LED assembly typically powered by CC source (essentially DC), so should be no
mains-frequency flicker. There are some dimming schemes using constant
freq/variable duty cycle, but the unless the off period is very long, freq
should be too high for persistency of human vision.
The cheaper drivers
Have never seen this in a product safety standard, but the phrase is commonly
used in building code (see NEC -> NFPA70).
For building code, would be where derived separately from the distribution
panel and/or distribution transformer. Independent circuits do not have to be
older than 18 years.
Use of part 18 depends on whether the RF being emitted is being used to 'do
work'.
Brian
-Original Message-
From: John Woodgate [mailto:jmw1...@btinternet.com]
Sent: Friday, June 24, 2016 2:39 PM
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: Re: [PSES] FCC Part 15 vs 18
How different are the
And an additional note that the CSA No. 0.4 test done at 40A.
Brian
From: IBM Ken [mailto:ibm...@gmail.com]
Sent: Monday, June 27, 2016 8:33 AM
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: Re: [PSES] earthing through PCB traces
PS: UL/CSA 60950 always required a limited short circuit test from CSA
At least for myself, ‘do not want to’ may be an inappropriate specification,
so ‘should not’ or 'shall not' for the below cited case would apply to my ilk.
EPO is common usage, while EMO can have several meanings, so is dependent on
context. FWIW, U.S. OSHA regs only use the term 'emergency sto
This was the general sentiment for the same discussion we previously had on
this, which was memorialized in EDN or ED (do not remember).
Am not certain that many standards are developed with public monies, as the
ANSI, ISO, and IEC are NGOs, so the EN/UL/CSA/etc adoption of a national
version o
Generally concur. Even for a 61010-1 shop, there will be times when you will
need this if an incorporated component is assessed to 62368-1. Also might want
to consider the 'rationale' publication (TR62368-2). Another good source for
learning the HBSE stuff is all of the PSES symposium stuff - fo
standards bodies will run compulsory 14-day total immersion courses in the
appropriate language. But they will be free of charge.
With best wishes DESIGN IT IN! OOO – Own Opinions Only www.jmwa.demon.co.uk J M
Woodgate and Associates Rayleigh England We live in exiting times
-Original Message
ise in any
specialty. Which is why, as common engineering practioners, we grovel and beg
our employers for the time and money to attend these august gatherings.
Brian
-Original Message-
From: John Woodgate [mailto:jmw1...@btinternet.com]
Sent: Wednesday, July 06, 2016 9:25 PM
To: Brian
-Original Message-
From: Brian O'Connell [mailto:oconne...@tamuracorp.com]
Sent: Wednesday, July 6, 2016 5:09 PM
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: Re: [PSES] Electronic versions of standards and DRM - off topic
Greetings to Human-unit RalphMcDiarmid,
Suppose that you could be
Think of it in terms of hysteresis loss and eddy current, which are
proportional to freq. Eddy current loss would depend on construction (hi-R
magnetics and lam thickness). Might want to verify xfmr temp. And it may be
noisy.
The biggie is to never use a 400Hz xfmr at 60Hz (core sat).
If you a
Anyone read the new TR60601-4-2:2016?
EMC pros wanna provide an over-view statement and/or critical clause notes for
us plebeians?
Thanks,
Brian
-
This message is from the IEEE Product Safety Engineering Society emc-pstc
discussi
Z mismatch can cause peaking errors for hi dv/dt signals once you get over
several hundred kHz. Probe calibration only valid for a specific scope model
and a specific probe, for a specific combination of scope settings. Remember
seeing some app notes from Tek or Agilent on probe calibration; and
While NRTLs are allowed to apply just about any standard deemed 'necessary',
should be noted that 2272 not yet recognized by ANSI. My opinion - no
discernable rationale for a new and separate safety standard for
"electric-powered self-balancing scooters". The 2272 proposed standard is
essential
My professional advice for Mr. Coleman is to press the Big Red Button.
Brian
From: John Woodgate [mailto:jmw1...@btinternet.com]
Sent: Friday, July 15, 2016 12:31 AM
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: Re: [PSES] Help [General Use]
I can understand that anyone in Basildon would cry for help
" It may be that the authorities that be decided that they wanted a
step-by-step guide on how to make these scooters safer and a standard specific
to the scooters accomplishes this task better than proposing an existing
standard."
Sounds reasonable, and would be willing to accept that rationale
One of my customers was having problems contacting Turk import authorities.
Told them they might have to wait a while - another coup d'etat in progress.
Brian
-
This message is from the IEEE Product Safety Engineering Society emc
By 'NEC", will assume that the reference is something like NFPA70 or 79. There
are, as we all know, many other elements of NFPA construction requirements .
NFPAs can reference ANSI, IEC, NEMA, ASME, IEEE, and other standards; and many
ANSI, NEMA, and IEEE standards reference one or more NFPA ele
lace safety.
Brian
From: msherma...@comcast.net
Sent: Monday, July 25, 2016 6:02 PM
To: Brian O'Connell; EMC-PSTC@LISTSERV.IEEE.ORG
Subject: Re: [PSES] Safety requirements in US
NEC is specifically NFPA 70, otherwise known as the National Electrical Code.
Sent from Xfinity Connect Mobile App
Power supplies intended to be built in are subject to regulations that would
scope the end-use equipment.
Battery charger and EPS efficiency standards and test methods and regulations
are developed by the DoE/EPA and/or the CEC. Both embedded chargers and
external chargers are covered. USB C mu
Mr Perkins,
Aware of the article 725 changes and other code stuff that would track this?
Brian
From: Pete Perkins [mailto:0061f3f32d0c-dmarc-requ...@ieee.org]
Sent: Thursday, July 28, 2016 10:47 AM
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: Re: [PSES] NEC 2017
Mike, et al,
Tha
Dear Hardware People on the third rock from Sol,
Software beings (self included) are idiotically clever and tend to be rather
subversive. We can devise profoundly evil schemes that can 'go around' fault
conditions in electrical components that forces our equipment to pump out
giggle watts of po
but there is still a
microcontroller or DSP core in there that is a serial Von Neumann machine. So
code safety assessment remains a dog's breakfast. Woof.
Brian
-Original Message-
From: Gary McInturff [mailto:gary.mcintu...@esterline.com]
Sent: Wednesday, August 03, 2016 11:06 AM
To:
Please beat a rapid and clear path to the local expert at your preferred
conformity assessment body. In the meantime, read UL1998, IEC61508, MISRA, and
perhaps UL991 for FIT. And there is another IEC standard for power systems SIL
that cannot remember.
As for my employer's stuff - my 'tactic' h
Whom considers Ada (the language name is not an acronym) provably correct? How
do you prove the program is deterministic? What if a Verification Condition is
not proven? Is the code incorrect? Is the assertion not correct or incomplete?
Does P = NP ? SPARK 2014 did attempt to address some of thi
Mr. Pickard, thanks much for link.
Et al, am confused - is this saying that 1221/2009 (ISO 14k and 17k stuff) is
now part of a marking directive?
Brian
From: Ronald Pickard [mailto:ronald.pick...@compoundphotonics.com]
Sent: Friday, August 12, 2016 8:38 AM
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subjec
1:16 PM
To: Brian O'Connell; EMC-PSTC@LISTSERV.IEEE.ORG
Subject: RE: EU OJ today
Hello Brian,
I don't think this is new. The oldest reference I have is from November 2013.
However, this is just because my files on the subject don't go back further. I
believe these have been harmon
Is typically two different things - the ASTM E2019/EN13821 MIE stuff or the Mil
stuff based on an LEL mix.
Has been a very long while since these tests were witnessed, but do remember
that the MIE tests can be rather sensitive to the shape of the VI curve per
time, so L needs good control. Reme
What is a "compliant report" ?
Brian
From: Scott Xe [mailto:scott...@gmail.com]
Sent: Friday, August 19, 2016 9:38 PM
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: Re: [PSES] Automotive EMC
Hi David,
Appreciate your clear guidance!
UN ECE R10.05 is only for products that are defined as immunity-re
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