Re: [PSES] Friday Question

The definition is clearly out-of-date; it doesn't even cover an autonomous lawn-mower. The police device wasn't a robot, let alone an autonomous one. They could have used an unmanned police vehicle or a shopping trolley. There are no ethical issues beyond the general one of the

Re: [PSES] Changes in Safety-Rated Capacitor Approval

, assuming I'm translating the Latin correctly. Ted Eckert Microsoft Corporation The opinions expressed are my own and do not necessarily reflect those of my employer. From: John Woodgate [mailto:jmw1...@btinternet.com] Sent: Tuesday, July 19, 2016 8:13 PM To: Ted Eckert <ted.eck...@microsoft.

Re: [PSES] Changes in Safety-Rated Capacitor Approval

That is true, EXCEPT de facto when the part requires its own independent approval and the old standard is withdrawn. In that case, no test house will grant approval to a withdrawn standard. This does raise serious questions for the committees whose standards have dated references to the 2005

Re: [PSES] Changes in Safety-Rated Capacitor Approval

A good place to look is the IEC web site itself, www.iec.ch . It appears that the withdrawal was by IEC (not CENELEC), because of the publication of these three new standards: IEC 60384-14:2013+AMD1:2016 CSV Fixed capacitors for use

Re: [PSES] Information for Mr. Woodgate

Eternal gratitude! With best wishes DESIGN IT IN! OOO - Own Opinions Only www.jmwa.demon.co.uk J M Woodgate and Associates Rayleigh England Memo to self: Think of a new sig-tag, quick! From: Harris, Kevin J (DSC) [mailto:kevinharr...@tycoint.com] Sent:

Re: [PSES] Applicable standards for hoverboard in EU

Nute [mailto:ri...@ieee.org] Sent: Friday, July 15, 2016 9:11 PM To: 'John Woodgate' <jmw1...@btinternet.com>; EMC-PSTC@LISTSERV.IEEE.ORG Subject: RE: [PSES] Applicable standards for hoverboard in EU > So are you working on a proposal to ACOS (via ANSI and SMB, of course) > to start

Re: [PSES] Applicable standards for hoverboard in EU

- From: Richard Nute [mailto:ri...@ieee.org] Sent: Friday, July 15, 2016 7:49 PM To: 'John Woodgate' <jmw1...@btinternet.com>; EMC-PSTC@LISTSERV.IEEE.ORG Subject: RE: [PSES] Applicable standards for hoverboard in EU > One standard for each energy source is a good idea, but ther

Re: [PSES] Help [General Use]

] Sent: Friday, July 15, 2016 4:50 PM To: EMC-PSTC@LISTSERV.IEEE.ORG Subject: Re: [PSES] Help [General Use] 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

Re: [PSES] Help [General Use]

I can understand that anyone in Basildon would cry for help on general principles, but could you be a bit more explicit on what sort of help you are seeking? With best wishes DESIGN IT IN! OOO - Own Opinions Only www.jmwa.demon.co.uk J M Woodgate and Associates

Re: [PSES] Applicable standards for hoverboard in EU

gullibility? -Original Message- From: Richard Nute [mailto:ri...@ieee.org] Sent: Thursday, July 14, 2016 10:49 PM To: 'John Woodgate' <jmw1...@btinternet.com>; EMC-PSTC@LISTSERV.IEEE.ORG Subject: RE: [PSES] Applicable standards for hoverboard in EU > how long would it take to tur

Re: [PSES] Applicable standards for hoverboard in EU

Consider the profound question, 'How do we get there from here?'. Taking into account how long it took to produce 62386-1 from two former standards ('how long' is indeterminate, because it’s still being improved), how long would it take to turn the 111 standards in 60335 into one? Answer in

Re: [PSES] scope probe free webinar joining information

Probeably. With best wishes DESIGN IT IN! OOO – Own Opinions Only www.jmwa.demon.co.uk J M Woodgate and Associates Rayleigh England Is there a homeopathic remedy for excessive gullibility? -Original Message- From: Doug Smith [mailto:d...@emcesd.com] Sent: Wednesday, July 13, 2016 6:12

Re: [PSES] Oscilloscope probe calibration

Richmond [mailto:k...@earthlink.net] Sent: Tuesday, July 12, 2016 2:02 PM To: EMC-PSTC@LISTSERV.IEEE.ORG Subject: Re: [PSES] Oscilloscope probe calibration On 7/11/2016 9:08 PM, John Woodgate wrote: > a deep misunderstanding Metrology department heads should be taken to the lab so they can see w

Re: [PSES] Oscilloscope probe calibration

Slight under-compensation would cause a brief overshoot to 138 V. In my opinion, probes can't be calibrated except with the scope they are exclusively used with. Covering the cal adjuster with a sticker shows a deep misunderstanding of how passive probes work. With best wishes DESIGN IT IN! OOO

Re: [PSES] Fire requirements in standards

You can be sure that integrated safety standards with very broad scope would be large, complex and very costly. For example, IEC 60335, for 'household appliances and similar' alone, consists of 111 separate standards at present. Few cost less than USD100. With best wishes DESIGN IT IN! OOO - Own

Re: [PSES] BLE and air plane travel

What is BLE? I'm into hearing aids, but I've not met that TLA. 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 From: Curtis McNamara [mailto:mcnam...@umn.edu]

Re: [PSES] Strain Relief Test (SEMI S2)

Work around by fitting an appliance connector? 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 From: Doug Powell [mailto:doug...@gmail.com] Sent: Friday, July 8,

Re: [PSES] Electronic versions of standards and DRM - off topic

Could the reason for 'parting thought' be that those subjects require deep understanding, not just a facility for coding? Like the difference between a peer-reviewed paper and a science column in a newspaper? With best wishes DESIGN IT IN! OOO – Own Opinions Only www.jmwa.demon.co.uk J M

Re: [PSES] Electronic versions of standards and DRM

dcopy to PDF, then run the OCR scanner on it to make it searchable. From: John Woodgate [mailto:jmw1...@btinternet.com] Sent: Tuesday, June 28, 2016 10:59 AM To: EMC-PSTC@LISTSERV.IEEE.ORG <mailto:EMC-PSTC@LISTSERV.IEEE.ORG> Subject: Re: [PSES] Electronic versions of standards and DRM It

Re: [PSES] [BULK] Re: [PSES] Fire requirements in standards

I've seen transformer varnish in different colours. I'm sure the makers would oblige for $$$. 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- From: Brian O'Connell

Re: [PSES] SV: [PSES] SV: [PSES] insulated wires

Isn't a European thing? If so, it doesn't gel with AWG (American Wire Gauge). Conductors in Europe are specified by area of cross-section. 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

Re: [PSES] Fire requirements in standards

Actually, are there any proposed fire enclosure changes to IEC 60950-1? The committee keeps trying to avoid changing 60950-1 and 60065, encouraging everyone to switch to 62368-1 as soon as possible. It takes a lot of learning to get up to speed with it, so it's most unwise to put off the switch

Re: [PSES] earthing through PCB traces

Actually, that NOTE is very much not permitted by IEC rules. A committee cannot mandate a future requirement. There absolutely must be a vote of National Committees at the time. The normal voting processes for a Edition 3 would be sufficient, but it would not be permissible to claim that Edition 3

Re: [PSES] Electronic versions of standards and DRM

epitaphs such as "your mother programs in basic", or "your computer does not meet class B limits". Brian -Original Message- From: John Woodgate [mailto:jmw1...@btinternet.com] Sent: Tuesday, June 28, 2016 9:53 AM To: EMC-PSTC@LISTSERV.IEEE.ORG Subject: Re: [PSES]

Re: [PSES] Electronic versions of standards and DRM

Cervelat. 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- From: Nyffenegger, Dave [mailto:dave.nyffeneg...@bhemail.com] Sent: Tuesday, June 28, 2016 6:42 PM To:

Re: [PSES] Electronic versions of standards and DRM

[mailto:k...@earthlink.net] Sent: Tuesday, June 28, 2016 5:27 PM To: EMC-PSTC@LISTSERV.IEEE.ORG Subject: Re: [PSES] Electronic versions of standards and DRM On 6/28/2016 10:59 AM, John Woodgate wrote: > ny standards publisher that makes it difficult to use their standards > qualifies for a Darwin

Re: [PSES] Electronic versions of standards and DRM

It depends very much on who publishes the standards. For example, many European and IEC standards can be obtained from the Estonian Standards body in English at attractive prices and a choice of means of delivery. https://www.evs.ee/shop ITU and ETSI standards are downloadable and free. Any

Re: [PSES] EMO vs EPO

Yes, it's essential to *study* what to do when something goes wrong. You do NOT want to cut power to a magnetic crane with a 10 ton load suspended! With best wishes DESIGN IT IN! OOO – Own Opinions Only www.jmwa.demon.co.uk J M Woodgate and Associates Rayleigh

Re: [PSES] EMO vs EPO

RE: you could hit the nearest red bottom That would get you shut down these days! 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 From: Kunde, Brian

Re: [PSES] Brexit and the European Compliance Complex

, 2016 7:08 PM To: 'John Woodgate' <jmw1...@btinternet.com>; EMC-PSTC@LISTSERV.IEEE.ORG Subject: RE: [PSES] Brexit and the European Compliance Complex John et al, Anyone betting on a CEuk marking yet? :>) br, Pete Peter E Perkin

Re: [PSES] FCC Part 15 vs 18

the product is and how it is used, marketed, and sold, OR by how it performed during EMC testing? Thanks, The Other Brian -Original Message- From: John Woodgate [mailto:jmw1...@btinternet.com] Sent: Friday, June 24, 2016 5:39 PM To: Kunde, Brian; EMC-PSTC@LISTSERV.IEEE.ORG Subject: RE: [PSES

Re: [PSES] Brexit and the European Compliance Complex

Since the result was known only on Friday, it's hardly surprising that Article 50 hasn't been invoked yet, since today is Monday. But, according to Press reports, Juencker has demanded that it be invoked by tomorrow. With best wishes DESIGN IT IN! OOO – Own Opinions Only

Re: [PSES] Brexit and the European Compliance Complex

I can't see any reason to invalidate the CE mark. The former 'BEAB' mark was demoted to voluntary after the general agreement in Europe to move away from 3rd-party certification, mostly due to legal liability issues - the test houses were being asked to declare safe products whose contents were

Re: [PSES] Brexit and the European Compliance Complex

I've written a short piece for publication on this subject. It's very early days to discuss detail, but it's clear that there will be no short-term changes on matter so politically insignificant as electronics safety and EMC. In the longer term, it depends somewhat on whether Britain joins EFTA

Re: [PSES] New EMC Directive 2014/30/EU

It depends on whether Britain joins EFTA or not. If it does, all EU Directives will probably continue to be adopted. In any case, most exports will still have to meet the relevant EMC standards, and if the Directive didn't apply within Britain, imported horrible emitters could not be controlled.

Re: [PSES] FCC Part 15 vs 18

: Friday, June 24, 2016 10:59 PM To: EMC-PSTC@LISTSERV.IEEE.ORG Subject: Re: [PSES] FCC Part 15 vs 18 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

Re: [PSES] FCC Part 15 vs 18

How different are the requirements? Can you economically comply with both, so you can stop worrying? 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- From: Kunde, Brian

Re: [PSES] AMA Warns of Harm from LED Streetlights’ Blue Light

They are powered at a high frequency, generated by a sort of SMPS without the secondary-side rectifier. This is to get high efficiency and minimize mains harmonic current emissions. With best wishes DESIGN IT IN! OOO – Own Opinions Only www.jmwa.demon.co.uk J M Woodgate and Associates Rayleigh

Re: [PSES] AMA Warns of Harm from LED Streetlights’ Blue Light

They might be right if you use yellow-tinted glasses, because discharge lamps are brighter across the spectrum. But the blue component is very efficiently scattered, so without suppressing it, vision would be worse. France used to require yellow headlights and I suspect Morocco copied the

Re: [PSES] AMA Warns of Harm from LED Streetlights’ Blue Light

My personal experience is opposite. I found 'warm white' light very annoying; I could 'see' but I couldn't 'focus'. I don't mean that my vision was blurred, but that it was imprecise. In particular, engineering drawing was very difficult. So I found 3800K to 4000K lighting much better. Part of

[PSES] FW: [PSES] AMA Warns of Harm from LED Streetlights’ Blue Light

With best wishes DESIGN IT IN! OOO – Own Opinions Only <http://www.jmwa.demon.co.uk/> www.jmwa.demon.co.uk J M Woodgate and Associates Rayleigh England From: John Woodgate [mailto:jmw1...@btinternet.com] Sent: Wednesday, June 22, 2016 6:46 PM To: 'John Allen' <

Re: [PSES] Magnetic Field at 400 A/m

Single-turn loops are calculable, provided they are far from any metalwork, magnetic or not. Rectangular loops are often easier to construct than circular. For these, the mag force H in the centre of the plane is 2D/(pi*A*B), where A and B are the sides in metres and D is the diagonal. With

Re: [PSES] New EMC Directive 2014/30/EU

Re: As the Directive has been transposed into national legislation in at least one member state, e.g. Ireland S.I. No.145/2016 , it is considered to be implemented across the EU for the purpose of declaring compliance against it.

Re: [PSES] Power Supply Safety approval

It's 60950-1, but yes, you are correct. I suspect the reason is as I gave before, that the test house wanted to check that what was inside the unit was in accordance with the CB report. But they should tell you why they did it. With best wishes DESIGN IT IN! OOO - Own Opinions Only

Re: [PSES] Power Supply Safety approval

If it's not multimedia, why was 60065 applied? With best wishes DESIGN IT IN! OOO - Own Opinions Only www.jmwa.demon.co.uk J M Woodgate and Associates Rayleigh England -Original Message- From: Richard Nute [mailto:ri...@ieee.org] Sent: Wednesday, June 15, 2016 9:03 PM To: 'John

Re: [PSES] Power Supply Safety approval

There are differences, but I suppose citing Guide 112 would deal with that. With best wishes DESIGN IT IN! OOO – Own Opinions Only www.jmwa.demon.co.uk J M Woodgate and Associates Rayleigh England -Original Message- From: ce-test, qualified testing bv - Gert Gremmen

Re: [PSES] Power Supply Safety approval

Did you ask why they did that? Presumably, they were not confident that what was in the sample was the same as what was in the CB-certificated sample. Unfortunately, that is very often the case. With best wishes DESIGN IT IN! OOO - Own Opinions Only

Re: [PSES] Screened room mains filter

Where do you connect the ground wire of the internal screen? If the two screens are not connected closely together, voltages exist between them. The reason the external connection should not penetrate the wall is so that VHF (and above) signals are confined to the outer surface by skin effect. I

Re: [PSES] Research Use Only Equipment on the EU Market

Words in the 'Whereas' only count 25 cents on the dollar. You need to cite relevant words from the main text of the Directive (if they exist) on your shipment paperwork. But you may need to do more. Have any of the recipient bodies obtained equipment in the way you want to use? If so, how did

Re: [PSES] Screened room mains filter

I wouldn't assume that. There is really no such thing as 'earth'. Any voltage induced on the protective conductor passes to the screening, which has capacitances to other objects, including the planet. So currents can flow through those capacitances, causing voltages to appear between different

Re: [PSES] Magnetic H Field Strength Density

The term is always associated with a 10 kHz resolution bandwidth, so your conclusion appears correct. With best wishes DESIGN IT IN! OOO - Own Opinions Only www.jmwa.demon.co.uk J M Woodgate and Associates Rayleigh England From: McCallum, Andy

Re: [PSES] fire safety test methods for different country standards

The requirements in the standards include 'safety factors' intended to allow for unquantified variations between samples. >-Original Message- >From: Ralph McDiarmid [mailto:ralph.mcdiar...@schneider-electric.com] >Sent: Wednesday, June 8, 2016 9:22 PM >To: EMC-PSTC@LISTSERV.IEEE.ORG

Re: [PSES] fire safety test methods for different country standards

Tried a flint and steel recently? Lots of history! >-Original Message- >From: Ralph McDiarmid [mailto:ralph.mcdiar...@schneider-electric.com] >Sent: Wednesday, June 8, 2016 5:27 PM >To: EMC-PSTC@LISTSERV.IEEE.ORG >Subject: Re: [PSES] fire safety test methods for different country

Re: [PSES] Universal travel adaptor with 2 USB ports

.uk/> www.jmwa.demon.co.uk J M Woodgate and Associates Rayleigh England From: Scott Xe [mailto:scott...@gmail.com] Sent: Monday, May 30, 2016 4:37 PM To: John Woodgate <jmw1...@btinternet.com> Cc: EMC-PSTC@LISTSERV.IEEE.ORG Subject: Re: [PSES] Universal travel adaptor with 2 USB ports

Re: [PSES] Universal travel adaptor with 2 USB ports

This is quite a difficult issue. Ideally, there would be a Part of the national standard that deals with all of the requirements for these devices, but there is none. You have to apply BS 1363-3:1995+A4:2012:

[PSES] CISPR 35 FDIS

The final voting document (FDIS) for CISPR 35 has just been circulated to national Committees, with a closing date for voting of July 8 2016. It is dual-voted in CENELEC as well, but it might pass in IEC but not in CENELEC, so the future of the EN clone, EN 55035, is still somewhat uncertain.

Re: [PSES] EN 55035 / CISPR 35

5024, 55020 or 55103-2? Thanks, Regards Rob. From: John Woodgate [mailto:jmw1...@btinternet.com] Sent: 19 May 2016 13:16 To: Robert Dunkerley; EMC-PSTC@LISTSERV.IEEE.ORG <mailto:EMC-PSTC@LISTSERV.IEEE.ORG> Subject: RE: [PSES] EN 55035 / CISPR 35 It is most unlikely that 550

Re: [PSES] fire safety test methods for different country standards

There isn't, almost certainly, a single reason, and we must take care that evidence that standards need to change isn't swamped by a greater body of evidence of non-compliance. For example, we recently had, in Britain, many tumble-dryer fires. The standard may allow a warning in the

Re: [PSES] fire safety test methods for different country standards

EE.ORG; 'John Woodgate' <jmw1...@btinternet.com> Subject: RE: [PSES] fire safety test methods for different country standards BTW: if that “safety expert” had looked closer, I think he would have found that something like 60065 would have been far more difficult with which to comply than

Re: [PSES] fire safety test methods for different country standards

RE: The odd thing that I noted very clearly at the time was that the standard did not include any concept of a real partially- or fully-sealed enclosure where any internal fires could be contained within the enclosure without external flame spread or other related hazards. That, I thought

Re: [PSES] EN 55035 / CISPR 35

It is most unlikely that 55035 will be brought into mandatory effect without at least 3 years transition. It appears that the CISPR FDIS is forecast for October 2016, and CENELEC will for sure need time to process it into an EN. With best wishes DESIGN IT IN! OOO – Own Opinions Only

Re: [PSES] Transformer insulation class

Ask them to cite the standard that supports their claim. It's up to them to justify, not to set you on a chase through the standards catalogue. If they refuse, find a different test house. With best wishes DESIGN IT IN! OOO – Own Opinions Only www.jmwa.demon.co.uk

Re: [PSES] “Design It In!”

Sorry, misunderstanding. I can only cite one instance in Britain from personal knowledge. An organization decided not to run a safety training course, because it feared that it could be sued if a trainee followed advice in the course and an unsafe product resulted. Not product liability but

Re: [PSES] “Design It In!”

odgate and Associates Rayleigh England From: John_e_allen [mailto:john_e_al...@blueyonder.co.uk] Sent: Wednesday, May 11, 2016 10:29 PM To: EMC-PSTC@LISTSERV.IEEE.ORG; John Woodgate <jmw1...@btinternet.com> Subject: Re: [PSES] “Design It In!” John W W.r.t. your 2nd, para, I think that the US

Re: [PSES] “Design It In!”

Great minds…. (;-) With best wishes DESIGN IT IN! OOO – Own Opinions Only <http://www.jmwa.demon.co.uk/> www.jmwa.demon.co.uk J M Woodgate and Associates Rayleigh England From: Nyffenegger, Dave [mailto:dave.nyffeneg...@bhemail.com] Sent: Wednesday, May 11, 2016 9:36 PM To: John Wo

Re: [PSES] “Design It In!”

odgate and Associates Rayleigh England From: Richard Nute [mailto:ri...@ieee.org] Sent: Wednesday, May 11, 2016 8:26 PM To: 'John Woodgate' <jmw1...@btinternet.com>; EMC-PSTC@LISTSERV.IEEE.ORG Subject: “Design It In!” I would agree that “Design It In!” is a good and appropriate slogan. U

Re: [PSES] Meet some of the list admins at the PSES Symposium next week

Bacher [mailto:j.bac...@ieee.org] Sent: Wednesday, May 11, 2016 1:55 PM To: John Woodgate <jmw1...@btinternet.com> Subject: RE: [PSES] Meet some of the list admins at the PSES Symposium next week John, hopefully your starting this discussion, along with Kevin's and my details will get that goin

Re: [PSES] Meet some of the list admins at the PSES Symposium next week

May 11, 2016 1:24 PM To: John Woodgate <jmw1...@btinternet.com> Subject: Re: [PSES] Meet some of the list admins at the PSES Symposium next week John, that is the one of the purposes of the IEEE Product Safety Engineering Society. That is why we sponsor this list server, have a newslet

Re: [PSES] Meet some of the list admins at the PSES Symposium next week

h sometimes took 6+ months to complete. Changes to printed circuit boards are especially painful and costly! I would guess the same percentages are probably true for safety such as 45 - 50 % had minor issues. Jim j.bac...@ieee.org <mailto:j.bac...@ieee.org> On Tue, May 10, 2016 a

Re: [PSES] Meet some of the list admins at the PSES Symposium next week

I'm not too surprised that a more or less 'out-of-the blue' enquiry aroused suspicions. I think IEEE should adopt and promote the 'Design it in!' movement, so that test houses could be 'encouraged' to provide the categorized data, wholly anonymized. Those data would form a strong part of the

Re: [PSES] Meet some of the list admins at the PSES Symposium next week

ngland From: Richard Nute [mailto:ri...@ieee.org] Sent: Tuesday, May 10, 2016 10:45 PM To: 'John Woodgate' <jmw1...@btinternet.com>; EMC-PSTC@LISTSERV.IEEE.ORG Subject: RE: [PSES] Meet some of the list admins at the PSES Symposium next week A failure at a certification house potentially

Re: [PSES] Meet some of the list admins at the PSES Symposium next week

Re your last paragraph. Is it possible to categorize that 90% into, e.g. trivial, documentation only, significant, serious? This is all to support the 'Design it in!' movement, which potentially saves the industry megabucks annually. With best wishes OOO – Own Opinions Only

[PSES] FW: [PSES] EN 62133 2013

With best wishes OOO – Own Opinions Only <http://www.jmwa.demon.co.uk> www.jmwa.demon.co.uk J M Woodgate and Associates Rayleigh England From: John Woodgate [mailto:jmw1...@btinternet.com] Sent: Wednesday, April 27, 2016 5:50 PM To: 'Scott Xe' <scott...@gmail.com> Subject: R

Re: [PSES] Partly Completed Machinery...or not???

Yes, this is an important distinction. A pulley is just a wheel with a grooved rim and cannot be used by itself except for trivial or humorous purposes (e.g. coffee cup stand). A shave block is a pulley mounted on an axle in a frame and the frame may have an 'eye' at one or both ends, and maybe a

Re: [PSES] [SPAM] Re: [PSES] Commom mode current vs. differential mode current and LISN

Quite right. The assumption doesn’t even work in most European countries, that use the ‘Schuko’ reversible mains plug. From: Scott Aldous [mailto:scottald...@google.com] Sent: Thursday, April 14, 2016 4:33 PM To: John Woodgate <jmw1...@btinternet.com> Cc: EMC-PSTC@LISTSERV.IEEE.ORG Subje

Re: [PSES] SV: [PSES] EU's new approach directive transitions

y persons other than the designated recipient(s) is prohibited. If you have received this e-mail in error, please notify the sender either by telephone or by e-mail and delete the material from any computer. Thank you for your co-operation. From: John Woodgate [mailto:jmw1...@btinternet.com] Sent: Thursday

Re: [PSES] SV: [PSES] EU's new approach directive transitions

A scale of 1 to 5 has been considered too coarse, but again 'where to stop?' 1 to 1000 gives, perhaps, a better impression of the RA of a comet strike to non-technical managers and politicians, but in these days of big numbers, there is a case for 1 to 1 million. From: McCallum, Andy

Re: [PSES] [SPAM] Re: [PSES] Commom mode current vs. differential mode current and LISN

I suppose it has been realised (or assumed?) that the impedance from N to E, even at quite high frequencies, is already low enough that an additional 4.7 nF makes insufficient difference to justify its inclusion. An experiment is indicated. From: Richard Marshall

Re: [PSES] "For indoor use only" on External Power Supply

It's not helpful to quote a dictionary or grammar when the terminology is not agreed. For Rich, misuse is defined differently from your definition. Game over. This topic is a 'thicket' - something that gets more difficult to penetrate the further you go in. One aspect not commonly studied

Re: [PSES] [SPAM] RE: [PSES] EU's new approach directive transitions

odgate and Associates Rayleigh England From: Douglas Smith [mailto:d...@emcesd.com] Sent: Friday, April 1, 2016 4:26 PM To: John Woodgate <jmw1...@btinternet.com> Cc: EMC-PSTC@LISTSERV.IEEE.ORG Subject: Re: [PSES] [SPAM] RE: [PSES] EU's new approach directive transitions I agree with John. A

Re: [PSES] [SPAM] RE: [PSES] EU's new approach directive transitions

e-test, qualified testing bv - Gert Gremmen > [mailto:g.grem...@cetest.nl] > Sent: Friday, April 1, 2016 8:40 AM > To: John Woodgate <jmw1...@btinternet.com> > Cc: EMC-PSTC@LISTSERV.IEEE.ORG > Subject: [SPAM] RE: [PSES] EU's new approach directive transitions > > FMEA:

Re: [PSES] EN 50370-1/-2

Only <http://www.jmwa.demon.co.uk> www.jmwa.demon.co.uk J M Woodgate and Associates Rayleigh England From: Mel Soliven [mailto:mel_soli...@yahoo.com] Sent: Monday, March 21, 2016 9:25 AM To: John Woodgate <jmw1...@btinternet.com>; EMC-PSTC@LISTSERV.IEEE.ORG Subject: EN 50370-1/-2

Re: [PSES] Will the ECJ end the New Approach?

Link doesn't work for people not members of the Linked-in list With best wishes OOO - Own Opinions Only www.jmwa.demon.co.uk J M Woodgate and Associates Rayleigh England From: John Allen [mailto:john_e_al...@blueyonder.co.uk] Sent: Friday, March 18, 2016 6:38 PM

Re: [PSES] Will the ECJ end the New Approach?

That indeed is an important issue. ENs based on IEC and ISO standards would have to be completely re-written so as to be 'technically equivalent' but not copies. However, the IEC publishes only in English, French, Spanish and (rarely) Russian. It is not clear what would happen about ENs in other

Re: [PSES] test message

if any), is confidential. Any > unauthorized use, distribution or disclosure is prohibited.  If you have received > this e-mail message in error, please notify the sender by reply e-mail or > telephone and delete it and any attachments from your computer system and > records. > > -O

Re: [PSES] My replies to post aren't appearing on the list

t: Friday, March 18, 2016 7:13 PM > To: John Woodgate <jmw1...@btinternet.com>; EMC- > p...@listserv.ieee.org > Subject: RE: [PSES] My replies to post aren't appearing on the list > > John, > > I've noticed that if EMC-PSTC@LISTSERV.IEEE.ORG isn't included in "To:"

[PSES] test message

Test message. I'm still not seeing any of my posts reflected back to me. Are they appearing on the list? With best wishes OOO - Own Opinions Only www.jmwa.demon.co.uk J M Woodgate and Associates Rayleigh England - This message is

[PSES] Test message 160319

Test message 160319 at the request of Scott Douglas. With best wishes OOO - Own Opinions Only www.jmwa.demon.co.uk J M Woodgate and Associates Rayleigh England - This message is from the IEEE Product Safety Engineering Society

Re: [PSES] test message

6 6:16 PM > To: John Woodgate <jmw1...@btinternet.com> > Subject: RE: [PSES] test message > > John, > > I'm not sure if you're referring to when you replied to my question earlier today, > but if you are, you replied only to me and not the list. > > Regards,

[PSES] My replies to post aren't appearing on the list

Aha! It seems my *replies* to others' posts aren't appearing, or aren't appearing to everyone. Will a moderator please look into that? With best wishes OOO - Own Opinions Only www.jmwa.demon.co.uk J M Woodgate and Associates Rayleigh England -

[PSES] Test message only

Test message. Please ignore. With best wishes OOO - Own Opinions Only www.jmwa.demon.co.uk J M Woodgate and Associates Rayleigh England - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list.

Re: [PSES] EN55032 definition of residential environment

I regret that the standards disagree with you. See the Scope clauses of IEC/EN 61000-6-1 and -2. With best wishes. OOO - Own Opinions Only J M Woodgate and Associates Rayleigh, UK www.jmwa.demon.co.uk From: Ghery S. Pettit [mailto:n6...@comcast.net] Sent: 10 December 2015 16:57 To:

[PSES] Test message

I think my posts about EMC environments are not being reflected. Has anyone seen my quotes from the Scopes of 61000-6-1 and -2? With best wishes. OOO - Own Opinions Only J M Woodgate and Associates Rayleigh, UK www.jmwa.demon.co.uk -

Re: [PSES] Wireless charging

ing of metal objects placed in the charging field -- OOO - Own Opinions Only. With best wishes. See www.jmwa.demon.co.uk When I turn my back on the sun, it's to look for a rainbow John Woodgate, J M Woodgate and Associates, Raylei

Re: [PSES] Wireless charging

In message <oicvxjsjuwawf...@jmwa.demon.co.uk>, dated Wed, 23 Sep 2015, John Woodgate <j...@jmwa.demon.co.uk> writes: In message <cabc1af+opjh2s1tcz5kqk9x8bcv2dt1oshcabkueb+8fzmt...@mail.gmail.com>, dated Wed, 23 Sep 2015, Dale Reid <re...@lexmark.com> writes

Re: [PSES] Wireless charging

-- OOO - Own Opinions Only. With best wishes. See www.jmwa.demon.co.uk When I turn my back on the sun, it's to look for a rainbow John Woodgate, J M Woodgate and Associates, Rayleigh, Essex UK - This message is from the IEEE Product Safety

Re: [PSES] Unexplained High Fallout of Power Supplies

ust know that they can be provoked into spontaneous energetic disassembly. -- OOO - Own Opinions Only. With best wishes. See www.jmwa.demon.co.uk When I turn my back on the sun, it's to look for a rainbow John Woodgate, J M Woodgate and Associat

Re: [PSES] Unexplained High Fallout of Power Supplies

ous condition, because a filter with open-circuit output can produce high voltages. -- OOO - Own Opinions Only. With best wishes. See www.jmwa.demon.co.uk When I turn my back on the sun, it's to look for a rainbow John Woodgate, J M Woodgate and Associat

Re: [PSES] Unexplained High Fallout of Power Supplies

ou take the mains feed for the power supply from upstream of the high-current filter, so it is much less likely to cause anything? -- OOO - Own Opinions Only. With best wishes. See www.jmwa.demon.co.uk When I turn my back on the sun, it's to look for a rainbow John Woodgate, J M Woodgate and Assoc

Re: [PSES] Complaint-Driven Immunity

wishes. See www.jmwa.demon.co.uk When I turn my back on the sun, it's to look for a rainbow John Woodgate, J M Woodgate and Associates, Rayleigh, Essex UK - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion l

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