Re: [PSES] Trusted resources for RoHS/Reach

2019-08-02 Thread John Woodgate
OJ listings.  I hope this is what you want. Best wishes John Woodgate OOO-Own Opinions Only J M Woodgate and Associates www.woodjohn.uk Rayleigh, Essex UK On 2019-08-02 21:02, Grasso, Charles wrote: Hello experts, I am (trying!) to put together a list of trusted resources that cover the

Re: [PSES] Plasma generator

2019-08-02 Thread John Woodgate
I think the answer to that is 'Not for sure'. It might well be possible for a prosecutor to show that different NBs (if they still exist) offer different advice in such problematic cases. Best wishes John Woodgate OOO-Own Opinions Only J M Woodgate and Associates www.woodjohn.u

Re: [PSES] Seeking clean copy of a great EMC Design Tips

2019-07-29 Thread John Woodgate
I seem to be able to open it OK in PDF Exchange editor.  I could send you two screenshots that are only a little fuzzy if you give me an email address. Best wishes John Woodgate OOO-Own Opinions Only J M Woodgate and Associates www.woodjohn.uk Rayleigh, Essex UK On 2019-07-29 19:33, IBM Ken

Re: [PSES] Product safety leading edge

2019-07-26 Thread John Woodgate
Best wishes John Woodgate OOO-Own Opinions Only J M Woodgate and Associates www.woodjohn.uk Rayleigh, Essex UK On 2019-07-26 22:03, Ted Eckert wrote: In my opinion, increasing environmental compliance requirements are putting the development of new flame retardants at the forefront of s

Re: [PSES] Electric actuators EMC

2019-07-25 Thread John Woodgate
For a domestic setting, IEC 61000-3-2, 61000-3-3 apply, together with CISPR 14-1 and CISPR 14-2.  It is possible that there are other standards that might apply, but those should be adequate. Best wishes John Woodgate OOO-Own Opinions Only J M Woodgate and Associates www.woodjohn.uk Rayleigh

Re: [PSES] UL 61010-1 7.4 stabilty

2019-07-22 Thread John Woodgate
I would have thought that a polite request for information would be less likely to damage relations than a challenge to the ruling. Best wishes John Woodgate OOO-Own Opinions Only J M Woodgate and Associates www.woodjohn.uk Rayleigh, Essex UK On 2019-07-23 06:34, Doug Powell wrote: It may be

Re: [PSES] UL 61010-1 7.4 stabilty

2019-07-22 Thread John Woodgate
Is it possible to ask the inspector to give publication and clause references to the claimed provisions? Best wishes John Woodgate OOO-Own Opinions Only J M Woodgate and Associates www.woodjohn.uk Rayleigh, Essex UK On 2019-07-23 01:11, Doug Powell wrote: An interesting requirement came up

Re: [PSES] Listing confusion

2019-07-19 Thread John Woodgate
Unfortunately, the DLC logos include the L-word: https://www.designlights.org/terms/logo-guidelines/ Best wishes John Woodgate OOO-Own Opinions Only J M Woodgate and Associates www.woodjohn.uk Rayleigh, Essex UK On 2019-07-19 15:43, Doug Powell wrote: All, Well actually, I'm not con

Re: [PSES] Railway Earthing and Isolation Requirements - Rolling Stock and Trackside Equipment

2019-07-19 Thread John Woodgate
It replicates, because both are based on IEC TC109 insulation co-ordination standards. Best wishes John Woodgate OOO-Own Opinions Only J M Woodgate and Associates www.woodjohn.uk Rayleigh, Essex UK On 2019-07-19 13:54, James Pawson (U3C) wrote: Thanks all, I’ve found some voltage isolation

Re: [PSES] Railway Earthing and Isolation Requirements - Rolling Stock and Trackside Equipment

2019-07-19 Thread John Woodgate
Have you looked at IEC TC9 publications? Go to: https://www.iec.ch/dyn/www/f?p=103:22:0FSP_ORG_ID:1248 Best wishes John Woodgate OOO-Own Opinions Only J M Woodgate and Associates www.woodjohn.uk Rayleigh, Essex UK On 2019-07-19 09:40, James Pawson (U3C) wrote: Hello experts, I’m working

Re: [PSES] IEC 60601-1-2: 2014 Testing on Device Powered from Computer USB Port

2019-07-16 Thread John Woodgate
I wouldn't use a generic laptop, just because that could be questioned. Is it not possible to use one of the manufacturer-designated laptops? That can't be reasonably questioned. Best wishes John Woodgate OOO-Own Opinions Only J M Woodgate and Associates www.woodjohn.uk Rayleigh, Es

Re: [PSES] Ground on ship

2019-07-08 Thread John Woodgate
wristwatch, it's about a square millimetre of PCB foil. Best wishes John Woodgate OOO-Own Opinions Only J M Woodgate and Associates www.woodjohn.uk Rayleigh, Essex UK On 2019-07-08 20:48, Richard Nute wrote: Hi Peter: Sea water is a very good conductor, better than soil.  Fresh water is an

Re: [PSES] Ground on ship

2019-07-08 Thread John Woodgate
'Ground' only means 'the places which we agree have zero volts on them', nothing more. So wherever that is, on a ship or an aircraft (or inside an appliance with a  2-core power cable), that is 'ground'. Best wishes John Woodgate OOO-Own Opinions On

Re: [PSES] Fail analysis on a micro switch - who have this service?

2019-07-08 Thread John Woodgate
First, if you haven't already, consult the manufacturer. Maybe the contact material is not suitable for the voltage or the current in your application. Microswitches now rarely fail due to contamination. Best wishes John Woodgate OOO-Own Opinions Only J M Woodgate and Assoc

Re: [PSES] Tilt stability and CoG test lab

2019-07-05 Thread John Woodgate
Don't forget to put a spot of red paint on it, so you can find it again. Best wishes John Woodgate OOO-Own Opinions Only J M Woodgate and Associates www.woodjohn.uk Rayleigh, Essex UK On 2019-07-05 18:07, Doug Powell wrote: A quick and dirty way to find the center of gravity is to han

Re: [PSES] Observation Period during Flicker Emissions Test

2019-06-28 Thread John Woodgate
;t correct to allow it to run in stand-by during the test. Best wishes John Woodgate OOO-Own Opinions Only J M Woodgate and Associates www.woodjohn.uk Rayleigh, Essex UK On 2019-06-28 14:24, Brian Kunde wrote: Reference IEC/EN 61000-3-3:2013 section 6.5 regarding Observation Period. The Electr

Re: [PSES] Guidelines v Standards v Codes

2019-06-27 Thread John Woodgate
That's only one sort of standard, a performance standard. There are other sorts, such as 'methods of measurement' standards. In general, a standard is 'an agreement between interested parties'. Best wishes John Woodgate OOO-Own Opinions Only J M Woodgate and Associates

Re: [PSES] Guidelines v Standards v Codes

2019-06-27 Thread John Woodgate
The use of the word 'code' in that context is not usual in Europe. In British English we have 'codes of practice', which may be mandatory within some professions but can also be 'guidelines' in your context. Best wishes John Woodgate OOO-Own Opinions On

[PSES] IEC/EN 61000-3-12

2019-06-20 Thread John Woodgate
reproduced; there should be a lot more graphics and text. I do not know if this applies also to other versions of the EN. -- Best wishes John Woodgate OOO-Own Opinions Only J M Woodgate and Associates www.woodjohn.uk Rayleigh, Essex UK

Re: [PSES] Grounding

2019-06-18 Thread John Woodgate
at it doesn't, but it does for some other standard, that doesn't apply to your EUT. Best wishes John Woodgate OOO-Own Opinions Only J M Woodgate and Associates www.woodjohn.uk Rayleigh, Essex UK On 2019-06-18 19:38, Steve Brody wrote: HI all, I have a client with whom I am havi

Re: [PSES] Tilt test

2019-06-11 Thread John Woodgate
Clause 8.6 of IEC 62368-1. I don' t know if the UL version differs. Best wishes John Woodgate OOO-Own Opinions Only J M Woodgate and Associates www.woodjohn.uk Rayleigh, Essex UK On 2019-06-11 21:18, Frank Tang wrote: Hi Engineering community, I'm trying to find information regard ti

Re: [PSES] Does anyone make this filter?

2019-06-09 Thread John Woodgate
rines run on batteries. I assumed it was hydrazine. Best wishes John Woodgate OOO-Own Opinions Only J M Woodgate and Associates www.woodjohn.uk Rayleigh, Essex UK On 2019-06-09 19:48, Ken Javor wrote: Re: [PSES] Does anyone make this filter? I have done exactly that in the past (well, not the beer

Re: [PSES] Does anyone make this filter?

2019-06-09 Thread John Woodgate
ly transformer that way; admittedly it was 'negotiated' over beer, but resulted in a $100 part for free. Best wishes John Woodgate OOO-Own Opinions Only J M Woodgate and Associates www.woodjohn.uk Rayleigh, Essex UK On 2019-06-09 18:31, Ken Javor wrote: Re: [PSES] Does anyone make thi

Re: [PSES] Stacking Grounds on a Stud

2019-06-07 Thread John Woodgate
eport. Best wishes John Woodgate OOO-Own Opinions Only J M Woodgate and Associates www.woodjohn.uk Rayleigh, Essex UK On 2019-06-07 14:09, Brian Kunde wrote: My question(s) is about stacking ground lugs on a single stud for the Protective Earth Terminal inside of a piece of electrical equipment (

Re: [PSES] DC/DC EMI Input Filter Stability

2019-06-05 Thread John Woodgate
Re solve or prevent. In one way they are the same, because the solution is usually the same. But 'prevent' is far cheaper than 'solve'. Best wishes John Woodgate OOO-Own Opinions Only J M Woodgate and Associates www.woodjohn.uk Rayleigh, Essex UK On 2019-06-04 17:52, G

Re: [PSES] HP 8753B Vector Network Analyser

2019-05-23 Thread John Woodgate
Come back John's Radio! May I forward your request to the IEEE EMC/PSTC mailing list? I suppose the module is not in any way repairable by someone who can do surface-mount work? Best wishes John Woodgate OOO-Own Opinions Only J M Woodgate and Associates www.woodjohn.uk Rayleigh, Essex U

Re: [PSES] GB or GC?....that is the question....

2019-05-22 Thread John Woodgate
itself, let alone finding a manufacturing error. Eyeball inspection of the grounding circuit probably is sufficient. Best regards, Rich *From:*John Woodgate *Sent:* Wednesday, May 22, 2019 9:44 AM *To:* ri...@ieee.org; EMC-PSTC@LISTSERV.IEEE.ORG *Subject:* Re: [PSES] GB or GC?that is the

Re: [PSES] GB or GC?....that is the question....

2019-05-22 Thread John Woodgate
Thanks, Richard, for the true facts. However, we can look at the facts another way. Since the test is passed, provided the fault does not get worse, the product remains safe. It's not an ideal situation, but it seems that something like a 100 A test would be required in order to detect a fault

Re: [PSES] GB or GC?....that is the question....

2019-05-17 Thread John Woodgate
ld be obvious. I really do not want a piece of equipment that has a bond conductor almost cut through during the assembly process. Still less than 0.1 ohm, but won't carry 25 A. Best wishes John Woodgate OOO-Own Opinions Only J M Woodgate and Associates www.woodjohn.uk Rayleigh, Essex UK T

Re: [PSES] 62368-1 Openings in a fire enclosure

2019-05-17 Thread John Woodgate
Noted. The products I deal with can't afford bulkhead connectors. Best wishes John Woodgate OOO-Own Opinions Only J M Woodgate and Associates www.woodjohn.uk Rayleigh, Essex UK The UK is a sovereign state, not a Zollverein state On 2019-05-17 19:33, Nyffenegger, Dave wrote: Bul

Re: [PSES] 62368-1 Openings in a fire enclosure

2019-05-17 Thread John Woodgate
rial.  In that case, one can distinguish between the opening and the items that enter/exit through it. But why would anyone put a component half-inside and half outside a fire enclosure? Best wishes John Woodgate OOO-Own Opinions Only J M Woodgate and Associates www.woodjohn.uk Rayleigh,

Re: [PSES] 62368-1 Openings in a fire enclosure

2019-05-17 Thread John Woodgate
I would not agree with the test house. If their interpretation was mean, the wording would be different. Best wishes John Woodgate OOO-Own Opinions Only J M Woodgate and Associates www.woodjohn.uk Rayleigh, Essex UK The UK is a sovereign state, not a Zollverein state On 2019-05-17 14:40, Payne

Re: [PSES] IEC 61000-4-9: Section 7.3 - use of a non-conductive table

2019-05-13 Thread John Woodgate
the magnetic field because eddy currents would flow. Best wishes John Woodgate OOO-Own Opinions Only J M Woodgate and Associates www.woodjohn.uk Rayleigh, Essex UK The UK is a sovereign state, not a Zollverein state On 2019-05-13 21:36, Richard Georgerian wrote: Greeting colleagues, In IE

Re: [PSES] RoHS 3 question

2019-05-09 Thread John Woodgate
Commission-delegated Directives, don't have /EU at the end. 2015/863 is an amendment to 2011/65/EU, not a 'new version'. Best wishes John Woodgate OOO-Own Opinions Only J M Woodgate and Associates www.woodjohn.uk Rayleigh, Essex UK The UK is a sovereign state, not a Zollverein st

Re: [PSES] RoHS 3 question

2019-05-09 Thread John Woodgate
You normally only cite the latest version. As far as I know, all these references end in /EU now. Best wishes John Woodgate OOO-Own Opinions Only J M Woodgate and Associates www.woodjohn.uk Rayleigh, Essex UK The UK is a sovereign state, not a Zollverein state On 2019-05-09 19:12

Re: [PSES] EMC and safety basics (process documentation)

2019-05-09 Thread John Woodgate
These are very big questions. Your employer should arrange for you to attend appropriate training courses. Best wishes John Woodgate OOO-Own Opinions Only J M Woodgate and Associates www.woodjohn.uk Rayleigh, Essex UK The UK is a sovereign state, not a Zollverein state On 2019-05-09 17:53

Re: [PSES] Auto-Deletion of 558 Subscribers to EMC-PSTC

2019-04-24 Thread John Woodgate
ith individual subscribers or their ISPs. Best wishes John Woodgate OOO-Own Opinions Only J M Woodgate and Associates www.woodjohn.uk Rayleigh, Essex UK On 2019-04-24 18:10, lauren.cr...@us.tel.com wrote: So did I get ‘booted’ because I was out of office a couple times this month? Has restoratio

Re: [PSES] Fully anechoic chamber FAC

2019-04-24 Thread John Woodgate
I suspect that the rule applies to chambers of the same useful volume. The FAC needs some special arrangement for the floor, which costs. Best wishes John Woodgate OOO-Own Opinions Only J M Woodgate and Associates www.woodjohn.uk Rayleigh, Essex UK On 2019-04-24 18:28, Amund Westin wrote: Is

Re: [PSES] E-Stop Questions

2019-04-24 Thread John Woodgate
Mushrooms come in all sorts of shape, so the description is not very scientific.  It's only a concern if the AHJ thinks it is! Whether the English is acceptable is a matter for national legislation, so there are probably several incompatible answers. Best wishes John Woodgate OO

Re: [PSES] Auto-Deletion of 558 Subscribers to EMC-PSTC

2019-04-24 Thread John Woodgate
Are you going to set the trigger for auto-delete to some more reasonable number of email failures, on a 'per month' basis, not 'over all time'? Best wishes John Woodgate OOO-Own Opinions Only J M Woodgate and Associates www.woodjohn.uk Rayleigh, Essex UK On 2019-04-24

Re: [PSES] Automated listserv error message

2019-04-24 Thread John Woodgate
e ISP. For instance, a DNS-lookup failure at the IEEE could cause an 'email address does not exist' failure. Best wishes John Woodgate OOO-Own Opinions Only J M Woodgate and Associates www.woodjohn.uk Rayleigh, Essex UK On 2019-04-24 16:32, Doug Powell wrote: All, Yesterday I received

[PSES] Who is this fellow?

2019-04-22 Thread John Woodgate
I see that a certain Mr. Perkins is now an IEEE Fellow.  Well deserved. -- Best wishes John Woodgate OOO-Own Opinions Only J M Woodgate and Associates www.woodjohn.uk Rayleigh, Essex UK - This message is from the IEEE Product

Re: [PSES] Question re: Measuring a signal in a noisy environment

2019-04-21 Thread John Woodgate
By 'they' in the quote below, I mean test house personnel. Best wishes John Woodgate OOO-Own Opinions Only J M Woodgate and Associates www.woodjohn.uk Rayleigh, Essex UK On 2019-04-21 08:42, John Woodgate wrote: *JMW: People take or send an EUT to the test house, which finds that

Re: [PSES] Question re: Measuring a signal in a noisy environment

2019-04-21 Thread John Woodgate
Hello, Ed. I've inserted responses below. Best wishes John Woodgate OOO-Own Opinions Only J M Woodgate and Associates www.woodjohn.uk Rayleigh, Essex UK On 2019-04-20 20:50, Edward Price wrote: *John:* ** ** *I don’t see how a test house can “impose” compliance.* *I thought all they

Re: [PSES] Dated and undated references

2019-04-20 Thread John Woodgate
;Which 'Woodgate4' of the three on file do you mean?' Best wishes John Woodgate OOO-Own Opinions Only J M Woodgate and Associates www.woodjohn.uk Rayleigh, Essex UK On 2019-04-20 16:21, Ghery Pettit wrote: Mick, I agree that a corrigendum would be the fastest way to fix this

[PSES] Dated and undated references, was: Re: [PSES] Question re: Measuring a signal in a noisy environment

2019-04-20 Thread John Woodgate
ime-scales are sufficient, although there could be exceptions, e.g. in the rare case where a dated reference standard is found to be seriously defective. Best wishes John Woodgate OOO-Own Opinions Only J M Woodgate and Associates www.woodjohn.uk Rayleigh, Essex UK On 2019-04-19 23:42, Ghery

Re: [PSES] Question re: Measuring a signal in a noisy environment

2019-04-19 Thread John Woodgate
I doubt anyone would disagree with that. But if a company allows a test house to impose compliance, how can it know that the result is reliable? Best wishes John Woodgate OOO-Own Opinions Only J M Woodgate and Associates www.woodjohn.uk Rayleigh, Essex UK On 2019-04-19 21:09, Grasso, Charles

Re: [PSES] JDQ 202 Specification.

2019-04-19 Thread John Woodgate
phrase 'pulse cycle time' so produces 715 hits, of which at least 714 are most probably irrelevant. Restricting the search to 'terms and definitions' produces no hits. Best wishes John Woodgate OOO-Own Opinions Only J M Woodgate and Associates www.woodjohn.uk Rayleigh, Essex UK

Re: [PSES] Question re: Measuring a signal in a noisy environment

2019-04-18 Thread John Woodgate
avoidable increased costs. This inevitably means that design engineers DO need to know the standards and the test process, 'well enough' at least. The test house would normally know more about both, due to more varied experience, much better than 'well enough'. Best wishes

Re: [PSES] Question re: Measuring a signal in a noisy environment

2019-04-18 Thread John Woodgate
Don't give up! I'm 81, and last year I tagged quite a nicely-funded task. Best wishes John Woodgate OOO-Own Opinions Only J M Woodgate and Associates www.woodjohn.uk Rayleigh, Essex UK On 2019-04-18 18:24, Cortland Richmond wrote: Darn straight!   At 74, I may not get another con

Re: [PSES] Question re: Measuring a signal in a noisy environment

2019-04-18 Thread John Woodgate
in, not imposed either by in-house specialists or test houses. Best wishes John Woodgate OOO-Own Opinions Only J M Woodgate and Associates www.woodjohn.uk Rayleigh, Essex UK On 2019-04-18 09:50, Manny Barron wrote: Hi Derek, I read Ken Wyatt's e-mail plus Ghery Pettit's Blog link a

Re: [PSES] ROHS for non-electrical components

2019-04-16 Thread John Woodgate
No, because the piping is not '/fully functional separate products'. /The enclosure might be considered as such, but an empty enclosure might not qualify as 'fully functional'. // Best wishes John Woodgate OOO-Own Opinions Only J M Woodgate and Associates www.woodjohn.uk Ra

Re: [PSES] Exemptions from UK Plugs and Sockets Regulations

2019-04-12 Thread John Woodgate
o any deviation from BS1363-1 that could compromise safety would be caught. Best wishes John Woodgate OOO-Own Opinions Only J M Woodgate and Associates www.woodjohn.uk Rayleigh, Essex UK On 2019-04-12 11:06, Charlie Blackham wrote: Schedule 1 of The Plugs and Sockets etc. (Safety) Reg

Re: [PSES] Standards for large vehicle chargers?

2019-04-10 Thread John Woodgate
For EU, EN 55011 applies, but any special issues with large vehicle chargers may not have been addressed yet. An amendment is being developed for Wireless Power Transfer. Best wishes John Woodgate OOO-Own Opinions Only J M Woodgate and Associates www.woodjohn.uk Rayleigh, Essex UK On 2019-04

Re: [PSES] Product Declaration of Conformity with external PSU...

2019-04-10 Thread John Woodgate
st publication we had products with lead-acid batteries on board that could readily burn under fault conditions. Now we have Li-ion, and maybe even more energetic batteries soon. Best wishes John Woodgate OOO-Own Opinions Only J M Woodgate and Associates www.woodjohn.uk Rayleigh, Essex UK On

Re: [PSES] Product Declaration of Conformity with external PSU...

2019-04-10 Thread John Woodgate
hould be two Declarations of Conformity in the box? One for the product and one for the PSU, where the latter is a copy of the PSU manufacturer's DoC?/ It seems a logical solution, and I doubt that it is explicitly prohibited. // Best wishes John Woodgate OOO-Own Opinions Only J M Woodgate and

Re: [PSES] Tamper-proof Hardware

2019-04-09 Thread John Woodgate
an be assembled together with a screw-thread, but an attempt to unscrew breaks the parts so that they can't be reassembled. This prevents the machine exploding under carbon dioxide pressure if the re-assembly was incorrectly carried out. Best wishes John Woodgate OOO-Own Opinio

Re: [PSES] Tamper-proof Hardware

2019-04-09 Thread John Woodgate
Yes, that is clearly the point of fitting t-p screws. Best wishes John Woodgate OOO-Own Opinions Only J M Woodgate and Associates www.woodjohn.uk Rayleigh, Essex UK On 2019-04-09 15:56, Larry Merchell wrote: Per: 3 to engage secretly or improperly in something. Wouldn't improperly be th

Re: [PSES] Tamper-proof Hardware

2019-04-09 Thread John Woodgate
text in an IEC standard is normative. See 13.2 of Directives Part 2. Best wishes John Woodgate OOO-Own Opinions Only J M Woodgate and Associates www.woodjohn.uk Rayleigh, Essex UK On 2019-04-09 10:28, John Allen wrote: John W When something that ambiguous, and which that /could/ be construed as

Re: [PSES] Tamper-proof Hardware

2019-04-09 Thread John Woodgate
n the INTRODUCTION a clause number, because it creates an impression that it is normative. But then there are 10^6 things in 62368-1 that I would have done differently. Best wishes John Woodgate OOO-Own Opinions Only J M Woodgate and Associates www.woodjohn.uk Rayleigh, Essex UK On 2019-04-09

Re: [PSES] Tamper-proof Hardware

2019-04-06 Thread John Woodgate
he measure of security is doubtful. Best wishes John Woodgate OOO-Own Opinions Only J M Woodgate and Associates www.woodjohn.uk Rayleigh, Essex UK On 2019-04-06 21:27, Robert Johnson wrote: I notice that IEC 62368 mentions tamper-proof screws in a couple places (articles 0.8, 0.11), although not

Re: [PSES] IEC 61000-4-5:2014/AMD1:2017 - Using the correct CDN for AC mains testing

2019-04-02 Thread John Woodgate
I think you did (answer your own question). The text you quote seems surprisingly (and gratifyingly) lucid. Under 16 A use a 16 A CDN. Over 16 A up to 32 A, use a 32 A CDN. Best wishes John Woodgate OOO-Own Opinions Only J M Woodgate and Associates www.woodjohn.uk Rayleigh, Essex UK On 2019

Re: [PSES] phishing e-mail from an old account of yours?

2019-03-29 Thread John Woodgate
Ther are press reports in England of a major email leak - up  to a billion addresses, it is alleged. Best wishes John Woodgate OOO-Own Opinions Only J M Woodgate and Associates www.woodjohn.uk Rayleigh, Essex UK On 2019-03-29 17:56, Peter Tarver wrote: All - I just received an unsolicited e

Re: [PSES] Postal address on product labelling...

2019-03-20 Thread John Woodgate
For lawyers, everything is either impossible or eminently possible, sometimes for the same issue and the same lawyer. On 2019-03-20 13:27, Charlie Blackham wrote: Matthew “But Sir, they’re not doing it” isn’t a defence in court or when you’re equipment is stuck in customs, or a competitor ha

Re: [PSES] classification of the output - SawStop

2019-03-15 Thread John Woodgate
Hi, Ed. I expect it senses current, whether that's through a resistance or a capacitance. Best wishes John Woodgate OOO-Own Opinions Only J M Woodgate and Associates www.woodjohn.uk Rayleigh, Essex UK On 2019-03-15 04:19, Edward Price wrote: *Pete:* ** *Does the SawStop operate by se

Re: [PSES] Safety & EMC during Proof of concept

2019-03-14 Thread John Woodgate
diated and conducted emissions are not too horrendous, then probably no-one outside the company will know it exists. Best wishes John Woodgate OOO-Own Opinions Only J M Woodgate and Associates www.woodjohn.uk Rayleigh, Essex UK On 2019-03-14 01:48, Frank Tang wrote: Hi Everyone, This is my

Re: [PSES] classification of the output

2019-03-13 Thread John Woodgate
Is it not possible to refer such a divergence to TC108 for a ruling on interpretation? Maybe even an Interpretation Sheet would be generated if the 'ES2' test house has misunderstood the standard. Best wishes John Woodgate OOO-Own Opinions Only J M Woodgate and Associates www.w

Re: [PSES] human skin resistance

2019-03-13 Thread John Woodgate
I don't know of any that Pete Perkins wouldn't know about. Best wishes John Woodgate OOO-Own Opinions Only J M Woodgate and Associates www.woodjohn.uk Rayleigh, Essex UK On 2019-03-13 19:06, Richard Nute wrote: John referenced “skin resistance.” To my knowledge, there is no res

Re: [PSES] Sheet resistor material

2019-03-10 Thread John Woodgate
Do a web search for 'teledeltos paper'. I am astonished that a) I remembered the name and b) it it still available. Best wishes John Woodgate OOO-Own Opinions Only J M Woodgate and Associates www.woodjohn.uk Rayleigh, Essex UK On 2019-03-10 03:42, DEREK WALTON wrote: Hi All, I’m l

Re: [PSES] Brexit and impact on official languages

2019-03-08 Thread John Woodgate
most young children (three to nine, or thereabouts) to learn more than two. Best wishes John Woodgate OOO-Own Opinions Only J M Woodgate and Associates www.woodjohn.uk Rayleigh, Essex UK On 2019-03-08 19:27, Richard Nute wrote: Note that the U.S.A. does not have an “official” language, but Englis

Re: [PSES] classification of the output

2019-03-08 Thread John Woodgate
event would not be a serious issue. Ken Javor Phone: (256) 650-5261 *From: *John Woodgate *Reply-To: *John Woodgate *Date: *Fri, 8 Mar 2019 09:41:41 + *To: * *Subject: *Re: [PSES] classification of the output

Re: [PSES] Brexit and impact on official languages

2019-03-07 Thread John Woodgate
ust a matter of education. Some academics write totally impenetrable prose. Best wishes John Woodgate OOO-Own Opinions Only J M Woodgate and Associates www.woodjohn.uk Rayleigh, Essex UK On 2019-03-08 01:06, Pete Perkins wrote: Doug et al,   A sigh of relief knowing that Ireland will champ

Re: [PSES] CEE standards?

2019-03-07 Thread John Woodgate
IECEE has its own web site. This URL might help: https://www.iecee.org/documents/refdocs/ Best wishes John Woodgate OOO-Own Opinions Only J M Woodgate and Associates www.woodjohn.uk Rayleigh, Essex UK On 2019-03-07 19:18, Richard Nute wrote: Hi John: I asked IEC.  No response. Best regards

Re: [PSES] Brexit and impact on offical langugages

2019-03-07 Thread John Woodgate
I should think there would be consternation and monkeyhouse if English were not retained. My guess is that almost all multi-state communication is in English, verbal and written. Best wishes John Woodgate OOO-Own Opinions Only J M Woodgate and Associates www.woodjohn.uk Rayleigh, Essex UK On

Re: [PSES] CEE standards?

2019-03-07 Thread John Woodgate
Have you asked IEC? I expect so. They might have the catalog, or even catalogue.:-) Best wishes John Woodgate OOO-Own Opinions Only J M Woodgate and Associates www.woodjohn.uk Rayleigh, Essex UK On 2019-03-07 17:38, Richard Nute wrote: I’m looking for CEE standards, or a catalog of CEE

Re: [PSES] CCC on Cooling Fans?

2019-03-05 Thread John Woodgate
Probably a keen new officer with insufficient training. Best wishes John Woodgate OOO-Own Opinions Only J M Woodgate and Associates www.woodjohn.uk Rayleigh, Essex UK On 2019-03-05 16:43, Brian Kunde wrote: We received a strange request today from Hong Kong supposedly initiated from Customs

Re: [PSES] RoHS standard change...

2019-03-04 Thread John Woodgate
instruction to national standards committees to withdraw any conflicting national standard. Manufacturers can, perhaps unwisely, continue to apply a standard beyond the dow date in the superseding standard. Best wishes John Woodgate OOO-Own Opinions Only J M Woodgate and Associates

Re: [PSES] RoHS standard change...

2019-02-28 Thread John Woodgate
overrule it. IEC standards sometimes include a recommended transition period in the Foreword (which no-one ever reads), but it's purely advisory. Best wishes John Woodgate OOO-Own Opinions Only J M Woodgate and Associates www.woodjohn.uk Rayleigh, Essex UK On 2019-02-28 13:35, Matthew Wilson

Re: [PSES] Mexico compliance approval for IT equipment

2019-02-27 Thread John Woodgate
wishes John Woodgate OOO-Own Opinions Only J M Woodgate and Associates www.woodjohn.uk Rayleigh, Essex UK On 2019-02-27 21:03, Pete Perkins wrote: My experience is that they are way behind on harmonization of requirements with the EN/IEC technical requirements.  They are working to come into the

Re: [PSES] RoHS standard change...

2019-02-27 Thread John Woodgate
is presumably usable until 2023. But you would be well advised to look at the new standard well before then, maybe in 2021, in case the first edition has acquired any amendment or corrigendum. Best wishes John Woodgate OOO-Own Opinions Only J M Woodgate and Associates www.woodjohn.uk Rayleigh

Re: [PSES] Work Equipment Directive 2009/104/EC

2019-02-25 Thread John Woodgate
If it's 'customer designed' and not sold to anyone else, it's probably not 'placed on the market' anyway. Best wishes John Woodgate OOO-Own Opinions Only J M Woodgate and Associates www.woodjohn.uk Rayleigh, Essex UK On 2019-02-25 16:59, Doug Powell wrote: Use o

Re: [PSES] Standards

2019-02-25 Thread John Woodgate
onian Standards. Best wishes John Woodgate OOO-Own Opinions Only J M Woodgate and Associates www.woodjohn.uk Rayleigh, Essex UK On 2019-02-25 14:44, Kunde, Brian wrote: John, Do you, or anyone, know if this amendment to IEC 61010-1 is much to be concerned about?  Is this a major amendmen

Re: [PSES] **External**Re: [PSES] FCC Part 15 Testing in Situ

2019-02-25 Thread John Woodgate
Do a 'pre-test'. Run the machine and walk round it with a wide-band receiver in ever-increasing circles. Note what you pick up and where. That gives a guide as to what might need to be measured more accurately and/or suppressed. Best wishes John Woodgate OOO-Own Opinions Only J M Wo

Re: [PSES] Type F receptacle wiring

2019-02-22 Thread John Woodgate
Look at the text in the Wikipedia link you gave us, under the heading: CEE 7/5 socket and CEE 7/6 plug (French; Type E) and the next : CEE 7/7 plug (compatible with E and F) Polarization rules! Best wishes John Woodgate OOO-Own Opinions Only J M Woodgate and Associates

Re: [PSES] Standards

2019-02-22 Thread John Woodgate
onian Standards. Best wishes John Woodgate OOO-Own Opinions Only J M Woodgate and Associates www.woodjohn.uk Rayleigh, Essex UK On 2019-02-22 21:37, Frank Tang wrote: Hi PSTC community, Looking to purchase a copy of IEC 61010-1:2010 standard and saw there are many revisions. Products will be utilized

Re: [PSES] Type F receptacle wiring

2019-02-22 Thread John Woodgate
Belgian national versions of IEC 60364.  Does anyone here know? Best wishes John Woodgate OOO-Own Opinions Only J M Woodgate and Associates www.woodjohn.uk Rayleigh, Essex UK On 2019-02-22 20:23, John Allen wrote: John Regardless of whether or not a CEE 7 plug is (and, /apart from that

Re: [PSES] Type F receptacle wiring

2019-02-22 Thread John Woodgate
ishes John Woodgate OOO-Own Opinions Only J M Woodgate and Associates www.woodjohn.uk Rayleigh, Essex UK On 2019-02-22 17:48, Doug Powell wrote: All, I am searching for wiring information for the TYPE E CEE7/5, 250 Volt, 16 Amp receptacle for France and Belgium.  The earth pin is obvious and for

Re: [PSES] Type F receptacle wiring

2019-02-22 Thread John Woodgate
The plug is not reversible in France and Belgium. Best wishes John Woodgate OOO-Own Opinions Only J M Woodgate and Associates www.woodjohn.uk Rayleigh, Essex UK On 2019-02-22 18:13, John Allen wrote: Doug As I am sure that many others will confirm, that CEE 7 socket does NOT have any

Re: [PSES] Identifying a Product of Multiple Components

2019-02-22 Thread John Woodgate
Comments inserted below. Best wishes John Woodgate OOO-Own Opinions Only J M Woodgate and Associates www.woodjohn.uk Rayleigh, Essex UK On 2019-02-22 16:59, Kunde, Brian wrote: Please help me to understand the “Marking” of equipment requirements for systems made up of multiple components

Re: [PSES] FCC Part 15 Testing in Situ

2019-02-22 Thread John Woodgate
wonder if FCC needs to look again at this requirement. Best wishes John Woodgate OOO-Own Opinions Only J M Woodgate and Associates www.woodjohn.uk Rayleigh, Essex UK On 2019-02-21 20:48, Jim Hulbert wrote: Equipment that is covered under FCC Rules Part 15, but which is too large to test on an open

Re: [PSES] Rating & WEEE markings on lithium-ion rechargeable battery

2019-02-20 Thread John Woodgate
I agree; even internal fixed batteries should be marked. The markings are for service technicians and recycling people, not just users. But 60065 and 60950-1 are nearly dead. You should look at 62368-1. Best wishes John Woodgate OOO-Own Opinions Only J M Woodgate and Associates www.woodjohn.uk

Re: [PSES] New EU enforcement regulations touches on all? product regulations/directives.

2019-02-14 Thread John Woodgate
It looks like a move to regulate Amazon and similar sources. At present, in the UK at least, there is little surveillance of goods ordered in small quantities by members of the public, with the exception of medication and some medical products. Best wishes John Woodgate OOO-Own Opinions Only

Re: [PSES] Testing a product with that uses a solar panel

2019-02-14 Thread John Woodgate
CISPR 11:2015 CSV covers radiation. IEC 62920:2017  is also needed. Best wishes John Woodgate OOO-Own Opinions Only J M Woodgate and Associates www.woodjohn.uk Rayleigh, Essex UK On 2019-02-14 03:36, Ken Javor wrote: Re: [PSES] Testing a product with that uses a solar panel Waited to see if

[PSES] Magnetic field emissions below 150 kHz, especially 0 Hz to 9 kHz

2019-02-08 Thread John Woodgate
CISPR standards do not cover the above, but I suppose military and aviation standards may do.  Is there anything available free of charge? -- Best wishes John Woodgate OOO-Own Opinions Only J M Woodgate and Associates www.woodjohn.uk Rayleigh, Essex UK

Re: [PSES] [BULK] [PSES] Economical operator name & postal address onEEEproducts

2019-02-06 Thread John Woodgate
er that imported VCRs had to clear customs in Poitiers (in the middle of France) at one time. Similar situations could occur, and an EU presence would then be invaluable. It doesn't have to have a staff of 100. Best wishes John Woodgate OOO-Own Opinions Only J M Woodgate and Associates www.woodj

Re: [PSES] Johnson City NY - crazy street lights

2019-02-05 Thread John Woodgate
Windows 10 tends to combat the waste of computers, but I have one which is half-dead because the manufacturer refuses to update a driver that Windows 10 now needs. Best wishes John Woodgate OOO-Own Opinions Only J M Woodgate and Associates www.woodjohn.uk Rayleigh, Essex UK On 2019-02-06 04:19, Doug

Re: [PSES] UK Gov Using The UKCA Mark

2019-02-05 Thread John Woodgate
I don't know. Maybe the UK has an MRA with the US, independent of any EU-US MRA. Best wishes John Woodgate OOO-Own Opinions Only J M Woodgate and Associates www.woodjohn.uk Rayleigh, Essex UK On 2019-02-05 10:40, Payne, Glyn wrote: Hi John, Won’t the lack of a MRA with the US effect th

Re: [PSES] UK Gov Using The UKCA Mark

2019-02-05 Thread John Woodgate
r how long.  We can hope that common sense will prevail, but it might not. Best wishes John Woodgate OOO-Own Opinions Only J M Woodgate and Associates www.woodjohn.uk Rayleigh, Essex UK On 2019-02-05 09:59, Scott Xe wrote: I fully agree on the Ken's concern.  How can the manufactures change

Re: [PSES] [BULK] [PSES] Economical operator name & postal address on EEEproducts

2019-02-05 Thread John Woodgate
compliance. In other words, that person must have access to all the manufacturing data for the product. Best wishes John Woodgate OOO-Own Opinions Only J M Woodgate and Associates www.woodjohn.uk Rayleigh, Essex UK On 2019-02-05 09:44, Scott Xe wrote: Dear Brian, Thanks for your useful info! 

Re: [PSES] UK Gov Using The UKCA Mark

2019-02-04 Thread John Woodgate
UKCA. Best wishes John Woodgate OOO-Own Opinions Only J M Woodgate and Associates www.woodjohn.uk Rayleigh, Essex UK On 2019-02-04 19:32, Charlie Blackham wrote: My understanding is that the UK can’t start negotiating many MRAs until they have left the EU A number of UK regulations have

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