Re: [PSES] ITAR scope

Opinions Only. Try www.jmwa.demon.co.uk and www.isce.org.uk John Woodgate, J M Woodgate and Associates, Rayleigh, Essex UK I was thinking of learning beer-making, but since I like honey, I chose meadier studies. - This message is from

Re: [PSES] CE marking of deep-fat fryer

www.jmwa.demon.co.uk and www.isce.org.uk John Woodgate, J M Woodgate and Associates, Rayleigh, Essex UK Some people who are peeling the finch of the financial crisis are thinking of biting a rook. - This message is from the IEEE

Re: [PSES] CE marking of deep-fat fryer

sets their fryer on fyer. That may happen anyway because the person concerned can't read English. -- OOO - Own Opinions Only. Try www.jmwa.demon.co.uk and www.isce.org.uk John Woodgate, J M Woodgate and Associates, Rayleigh, Essex UK Some people who are peeling the finch of the financial crisis

Re: [PSES] CE marking of deep-fat fryer

automatically become unsafe if it's moved into a plant. -- OOO - Own Opinions Only. Try www.jmwa.demon.co.uk and www.isce.org.uk John Woodgate, J M Woodgate and Associates, Rayleigh, Essex UK Some people who are peeling the finch of the financial crisis are thinking of biting a rook

Re: [PSES] CE marking of deep-fat fryer

that such a standard existed but a search of the IEC SC61E web site didn't show it. I think I know why: the page I asked for didn't appear, but one that resembled it did. -- OOO - Own Opinions Only. Try www.jmwa.demon.co.uk and www.isce.org.uk John Woodgate, J M Woodgate and Associates, Rayleigh, Essex UK Some

Re: [PSES] CE marking of deep-fat fryer

In message nyjtypaolzwof...@jmwa.demon.co.uk, dated Mon, 14 Nov 2011, John Woodgate j...@jmwa.demon.co.uk writes: In message AB6009628A08455FAACB848DCB89BA9E@Pete97219Compaq, dated Mon, 14 Nov 2011, Pete Perkins peperkin...@cs.com writes: Looking for input on requirements for CE

Re: [PSES] CE marking of deep-fat fryer

In message eb8hcucbwgwof...@jmwa.demon.co.uk, dated Tue, 15 Nov 2011, John Woodgate j...@jmwa.demon.co.uk writes: In message e9c52f9e77c43c49a56a22691b3680be1b1...@tk5ex14mbxc301.redmond.corp.micro soft.com, dated Mon, 14 Nov 2011, Ted Eckert ted.eck...@microsoft.com writes: If the fryer

Re: 230V Transition for EU?

, until 2008. I have been informed by a very reliable source that the UK supply industry has no plans to take advantage of the extra 4% downward tolerance. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional sound reinforcement and distribution

Re: BeCu problem

-transferring insulators. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional sound reinforcement and distribution? Then go to http://www.isce.org.uk PLEASE do NOT copy news posts to me by E-MAIL! This message is from the IEEE EMC Society Product

Re: EN60950 protective conductor test (was Re: Circuit Breaker Tripping Dring Fault Tests)

I read in !emc-pstc that Nick Williams nick.willi...@conformance.co.uk wrote (in p05200f03ba60957364e4@[192.168.1.28]) about 'EN60950 protective conductor test (was Re: Circuit Breaker Tripping Dring Fault Tests)' on Fri, 31 Jan 2003: At 12:22 + 31/1/03, John Woodgate wrote

Re: Unity Power Factor

. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional sound reinforcement and distribution? Then go to http://www.isce.org.uk PLEASE do NOT copy news posts to me by E-MAIL! This message is from the IEEE EMC Society Product Safety Technical Committee

Re: single fault conditions

to our various safety standards. That was my impression, too. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional sound reinforcement and distribution? Then go to http://www.isce.org.uk PLEASE do NOT copy news posts to me by E-MAIL

Re: EN55022:1998 and telecom ports

and formerly CISPR/G OOPS Yes, you are quite right. I didn't notice the typo. I meant to type G, but I is now the correct reference. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional sound reinforcement and distribution? Then go to http

Re: EN55022:1998 + A1:2000

the current through the antenna, not by absorbing RF. It could, however, be called a CMAD Common Mode Attenuation Device. It is *meant* to absorb the energy in a lossy filter. However, it has been incredibly badly specified by CISPR/F, AIUI. -- Regards, John Woodgate, OOO - Own Opinions Only. http

Re: BeCu problem

the battery. Seems to me that some plating could solve that problem however. OTOH, I have never found any problem with *magnetic* stainless steel. But nickel plate does cause film interface problems, particularly for 1.5 V or 3 V supplies. -- Regards, John Woodgate, OOO - Own Opinions Only. http

Re: EN55022:1998 and telecom ports

is NOT the only standard in the Universe. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional sound reinforcement and distribution? Then go to http://www.isce.org.uk PLEASE do NOT copy news posts to me by E-MAIL! This message is from the IEEE EMC

Re: BeCu problem

by the Military in high power radar applications such as tubes. Vapour Phase Deposition of diamond may replace BeO, with improved thermal properties, AIUI, and no toxicity problem. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional sound reinforcement

Re: EN55022:1998 and telecom ports

, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional sound reinforcement and distribution? Then go to http://www.isce.org.uk PLEASE do NOT copy news posts to me by E-MAIL! This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc

Re: Unity Power Factor

(personally, of course, not from HP)? -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional sound reinforcement and distribution? Then go to http://www.isce.org.uk PLEASE do NOT copy news posts to me by E-MAIL! This message is from the IEEE EMC

Re: Unity Power Factor

. We've never succeeded in getting such clear and definite statements about the US experience previously. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional sound reinforcement and distribution? Then go to http://www.isce.org.uk PLEASE do NOT copy

Re: EN55022:1998 + A1:2000

before I make a name for the device or before I make a DIY device itself? I don't plan to do that at present, but you never know. The discussion in the UK committee leads me to think that the 'MAD' part is apt. (;-) -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk

Re: single fault conditions

be discussed. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional sound reinforcement and distribution? Then go to http://www.isce.org.uk PLEASE do NOT copy news posts to me by E-MAIL! This message is from the IEEE EMC Society Product Safety

Re: Translations: Chinese to English

: sci.lang.translation.marketplace -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional sound reinforcement and distribution? Then go to http://www.isce.org.uk PLEASE do NOT copy news posts to me by E-MAIL! This message is from the IEEE EMC Society

Re: Unity Power Factor

to 1991, when I heard about Class D and started to study the subject closely. During that time, the flat tops developed. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional sound reinforcement and distribution? Then go to http://www.isce.org.uk

Re: EN55022:1998 + A1:2000

and where can I buy one? -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional sound reinforcement and distribution? Then go to http://www.isce.org.uk PLEASE do NOT copy news posts to me by E-MAIL! This message is from the IEEE EMC Society Product

Re: EN55022:1998 and telecom ports

in one way or another, and in any case MUST not be 'unterminated', by ending in 'etc.' or 'and similar', etc. (;-) -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional sound reinforcement and distribution? Then go to http://www.isce.org.uk PLEASE

Re: Circuit Breaker Tripping Dring Fault Tests

system voltage and permitted voltage variation. 0.5 Ohm seems large for a flexible cord. 0.5 ohms is 0.2 ohm total for the two conductors of the flexible plus 0.3 ohm total for the two conductors of the feed to the wall socket. All in a 230 V system. It's just an example. -- Regards, John Woodgate

Re: single fault conditions

current to flow through the FET, but not to apply a mechanical short across the component? Experiences comments are appreciated. Doesn't the gate-to-drain short simulate this reasonably well? -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional

Re: single fault conditions

probable SFC, that would not be tested for, in accordance with existing standards. If you find the existing standards inadequate, bring your proposals for new tests to your national standards committee for onward transmission to IEC. -- Regards, John Woodgate, OOO - Own Opinions Only. http

Re: UK DTI applying generic standard to test hair dryer for conformity

it does not control emissions in the UHF TV bands. Steps are being taken to deal with this. However, anyone who markets a hair-dryer that clearly interferes with TV is not exactly sensible, do you think? It isn't as if you need a test- house to find that problem! -- Regards, John Woodgate, OOO

Re: Unity Power Factor

that way for about 10 years. The present US chums are far more sensible. Even so, 'peak flattening' rarely figures in their vocabulary. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional sound reinforcement and distribution? Then go to http

Re: Circuit Breaker Tripping Dring Fault Tests

short-circuit current of about 240 A. The appliance fuse should be able to interrupt that without exploding. UK plug-top fuses are tested to break 6000 A safely, though. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional sound reinforcement

Re: EN55022:1998 + A1:2000

with the input impedance, because if the impedance is far out, the energy never gets into the device, so can't be absorbed. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional sound reinforcement and distribution? Then go to http

Re: Declaration of Conformity

in (on) a CD ROM and no paper in the box? It's a few lines of text. Why would you put it on a CD-ROM? Do you include the D of C with Customs papers only? It is highly advisable to include it with shipping documents, but 'only' is too definite. -- Regards, John Woodgate, OOO - Own Opinions Only. http

Re: RTTE directive.

question, by e-mail. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional sound reinforcement and distribution? Then go to http://www.isce.org.uk PLEASE do NOT copy news posts to me by E-MAIL! This message is from the IEEE EMC Society Product

Re: EN55022:1998 + A1:2000

! -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional sound reinforcement and distribution? Then go to http://www.isce.org.uk PLEASE do NOT copy news posts to me by E-MAIL! This message is from the IEEE EMC Society Product Safety Technical Committee

Re: Unity Power Factor

. Distribution transformer overheating is the sort of effect that I am interested in. Are these MV/LV transformers, 'pole-pig' types or larger. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional sound reinforcement and distribution? Then go to http

Re: Unity Power Factor

be reliably determined as due to concentrations of non-linear loads of less than 3 kVA or so? -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional sound reinforcement and distribution? Then go to http://www.isce.org.uk PLEASE do NOT copy news posts

Re: Applicabilty of Flicker Standard

supply being switched (in a big hospital, for example, which has two separate HV or MV supplies for reliability). In that case, the standard applies. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional sound reinforcement and distribution

Re: EN61000-4-3:2002

an issue dated '2000'. The 2002 edition contains no Common Modifications. The standard which it supersedes on 2005-04-01 is EN 61000-4-3:1996 + A1:1998 + A2:2001. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional sound reinforcement

Re: 'DOW' of standards

)) and 1.1.2004 (the dow of IEC 61010-1:1990/A2:1995), can either IEC 61010-1:1990/A2:1995 or IEC 61010-1:2001 be used to presume conformance with the requirements of LVD? Yes. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional

Re: Unity Power Factor

to be startlingly different from those of the current standard with the Millennium Amendment. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional sound reinforcement and distribution? Then go to http://www.isce.org.uk PLEASE do NOT copy news posts to me

Re: Unity Power Factor

so much, because the distribution system is different. Countries outside Europe are gradually adopting IEC 61000-3-2 under emission regulations. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional sound reinforcement and distribution

High-currrent resistors and inductors - preferably variable

is jmw(AT)jmwa.demon.co.[DELETE.]uk -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional sound reinforcement and distribution? Then go to http://www.isce.org.uk PLEASE do NOT copy news posts to me by E-MAIL! This message is from the IEEE EMC

Re: DEMKO high voltage spacing requirements

it to come over in that way, but I was mystified by the references to vintage stuff like 'DEMKO approval' and '220 V'. You may know, if you lurk here regularly, that I always try to be helpful. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional

Re: DEMKO high voltage spacing requirements

apart from the mains circuit clearances. Also, the European mains voltage is 230 V now, not 220 V. Where have you been for the last 10 years? -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional sound reinforcement and distribution? Then go

Re: Acoustic noise calculations for multiple shelves

. The noises are uncorrelated (largely), so you add 3 dB, not 6. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional sound reinforcement and distribution? Then go to http://www.isce.org.uk PLEASE do NOT copy news posts to me by E-MAIL! This message

Re: jurisdiction, overlap, and delegation in USA rules.

written as a statute but stems from tradition and case law, then 'supersession' may be the better word. I *think* that the autonomy of the US states is of that nature, the federal Constitution simply affirming what was already established. -- Regards, John Woodgate, OOO - Own Opinions Only. http

Re: EN 55022:1998 +Amendment A1:2000

into. If you do not, the product may fail the test. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional sound reinforcement and distribution? Then go to http://www.isce.org.uk PLEASE do NOT copy news posts to me by E-MAIL! This message is from

Re: jurisdiction, overlap, and delegation in USA rules.

that'. If that is an urban legend, I have been misled, but no-one challenged it at the time. [snip] -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional sound reinforcement and distribution? Then go to http://www.isce.org.uk PLEASE do NOT copy

Re: SV: SV: NRTL in the U.S.

more complicated, because the practical requirements are not centralized but delegated down though the local government chain, and in some cases jurisdictions overlap or are not clearly segregated. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested

Re: SV: NRTL in the U.S.

think there are still some differences. It's also necessary to be specific about which editions are compared. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional sound reinforcement and distribution? Then go to http://www.isce.org.uk PLEASE

Re: SV: NRTL in the U.S.

the cost of certification would make your product uncompetitive against other, uncertified products in competition with yours. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional sound reinforcement and distribution? Then go to http

Video Cameras for EMC Test Monitoring

them, if you are not expecting to use them? -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional sound reinforcement and distribution? Then go to http://www.isce.org.uk PLEASE do NOT copy news posts to me by E-MAIL! This message is from

Re: EN 61000-4-4 Amd 2

into account the consequences of the generator not conforming to Amendment 2. If those consequences can be shown to be insignificant, and you keep a record of that assessment, you don't need to re-test. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested

Re: Draft RoH Directive

substances are zero parts per million. Am I reading this correctly? I really don't think so. Why don't you suggest zero parts per trillion? Octillion? 'No limit' means *NO* limit, not *zero* limit. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional

Re: Alternatives to Brominated Fire Retardants

in plastics? Not bominated but abominated. By no means all brominated flame-retardants are controlled. The ones that are still allowed tend to be more costly. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional sound reinforcement

Re: Fiber optic cable testing per EN 55022:1998 ?

a fiber cable into a trench to inject noise isn't purposeful. I'm sure you know what you mean, but I don't. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional sound reinforcement and distribution? Then go to http://www.isce.org.uk PLEASE do

Re: IEC vs. EN

clones the IEC text without change (unless there are Common Modifications or CENELEC-only amendments), and implements the changes to the normative references by means of Annex ZA. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional sound

Re: Fiber optic cable testing per EN 55022:1998 ?

-optic, so be it. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional sound reinforcement and distribution? Then go to http://www.isce.org.uk PLEASE do NOT copy news posts to me by E-MAIL! This message is from the IEEE EMC Society Product

Re: Fiber optic cable testing per EN 55022:1998 ?

of the spectrum is flooded with thermal radiation from objects at normal temperatures. But sources and detectors do exist. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional sound reinforcement and distribution? Then go to http://www.isce.org.uk

Re: Fiber optic cable testing per EN 55022:1998 ?

a stab at enlightening(no pun intended) Oh, please intend it! us all on this one? Try sci.physics -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional sound reinforcement and distribution? Then go to http://www.isce.org.uk PLEASE do

Re: IEC vs. EN

transition period applies. Industry cannot work with standards that come into effect instantaneously and without prior notice. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional sound reinforcement and distribution? Then go to http

Re: European 3 Phase

. In that case, it is infinitely better than the BSI document, which is not free. (;-) -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional sound reinforcement and distribution? Then go to http://www.isce.org.uk PLEASE do NOT copy news posts to me

Re: Fiber optic cable testing per EN 55022:1998 ?

to introduce any NEW tests involving the fibre-optic cables. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional sound reinforcement and distribution? Then go to http://www.isce.org.uk PLEASE do NOT copy news posts to me by E-MAIL! This message

Re: EU Directives for Locomotive Switching and Communications Systems

or is there a directive specific to this type of equipment. The railways have their own standards and Directives. There is an ongoing problem of compatibility between these and the RTTED and EMCD. Look for standards issued by CENELEC TC9X and IEC TC9. -- Regards, John Woodgate, OOO - Own Opinions Only. http

Re: strange symbols (to me anyway)

is an international(except US) road hazard sign? It's in ISO 7000 - no. 0434, and it DOESN'T mean 'read the instructions' as it is used in some editions of IEC 60950. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional sound reinforcement

Re: Sun Beds

for sale in Europe and the US.   Have you looked at the BSI web site? -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional sound reinforcement and distribution? Then go to http://www.isce.org.uk PLEASE do NOT copy news posts to me by E

Re: DOCOPOCOSS?

, are the dates quoted in the OJ dd/mm/yy or mm/dd/yy? They *should* be (yy)yy-mm-dd, but it's very unlikely indeed that they are mm-dd-yy, unless someone has made a BIG mistake. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional sound

Re: EUROPEAN VOLTAGE HARMONISATION

in tolerance) and when they will be introduced? 230 V +/- 10%. Some former '220 V' countries can't meet those limits yet and for them, only, conformity is extended to 2008. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional sound reinforcement

Re: strange symbols (to me anyway)

it. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional sound reinforcement and distribution? Then go to http://www.isce.org.uk PLEASE do NOT copy news posts to me by E-MAIL! This message is from the IEEE EMC Society Product Safety Technical

Re: EN 60601-1-2/ EN 55022: 1998

monoxide: it's DOCOPOCOSS. (;-) -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional sound reinforcement and distribution? Then go to http://www.isce.org.uk PLEASE do NOT copy news posts to me by E-MAIL! This message is from the IEEE EMC

Re: strange symbols (to me anyway)

of the symbol is not wholly self-evident, it is more likely to be understood than the current official designations like 'IP31' or 'IP40'. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional sound reinforcement and distribution? Then go to http

Re: strange symbols (to me anyway)

is unnecessary by present day standards. But will your elderly aunt understand what 'IP30' means? (Don't tell me, she's a Supreme Court judge, of course.) (;-) -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional sound reinforcement and distribution

Re: strange symbols (to me anyway)

for it disappeared about 40 years ago - at least in the transformer standards I have used. I think the 'house' symbol is a NEW thing, not an old one from 40 years ago. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional sound reinforcement

Re: EN 55103 declaration

+ 1). -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional sound reinforcement and distribution? Then go to http://www.isce.org.uk PLEASE do NOT copy news posts to me by E-MAIL! This message is from the IEEE EMC Society Product Safety

Re: strange symbols (to me anyway)

in IEC 60417. It's a characteristic shared with the vast majority of the symbols in IEC60417. The only justification is that the alternative to using symbols is worse - umpteen different versions with the advice and warnings given, and controls labelled, in different languages. -- Regards, John

Re: EN 55103 declaration

should we specify compliance with the EN or BS EN version of the standards? While it is quite reasonable to cite the BS EN, some people may not think so, thus you should cite the EN. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional

Re: strange symbols (to me anyway)

to deceive. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional sound reinforcement and distribution? Then go to http://www.isce.org.uk PLEASE do NOT copy news posts to me by E-MAIL! This message is from the IEEE EMC Society Product Safety

Re: strange symbols (to me anyway)

has parallel plates; the symbol with one arcuate plate is a US divergence from the international standards. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional sound reinforcement and distribution? Then go to http://www.isce.org.uk PLEASE do

Re: strange symbols (to me anyway)

I read in !emc-pstc that Rich Nute ri...@sdd.hp.com wrote (in 200301030156.raa04...@epgc264.sdd.hp.com) about 'strange symbols (to me anyway)' on Thu, 2 Jan 2003: It is not an ISO or IEC symbol. It is either in IEC60417 already or will be in the future. -- Regards, John Woodgate, OOO - Own

Re: Changes to IEEE emc-pstc web-based services

disruption, although there are sometimes naive questions about which cable to use for wiring power to a garage or similar. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional sound reinforcement and distribution? Then go to http

Re: Changes to IEEE emc-pstc web-based services

to me that the web site system is OK for people with 'always- on' connection, but for those of us on dial-up, especially pay-as-you-go dial up, it will be too expensive to justify participation. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested

Re: dmax test

measurements to get a meaningful result. But we found that the equipment's own switch gave different results (a 20% lower average inrush current in the relevant experiments). -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional sound reinforcement

Re: Superseded standard

and declaration of conformity documents issued for products declaring conformity with EN 50082-1:1992 are now not legitimate. ..does your company REALLY make anything for which there is NOW no applicable product(-family) standard for immunity? I'd be surprised. -- Regards, John Woodgate, OOO

Re: refurbished products

in 1888, before applicable EU Directives existed. It is being shipped for/after repair to as close to its original specification as possible.' Use the word 'REPAIR', not 'refurbish' or any other word, some of which have specific meanings attached in Guidelines to Directives. -- Regards, John Woodgate

Re: Sharp Object

and search. Or to your local hospital! -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional sound reinforcement and distribution? Then go to http://www.isce.org.uk PLEASE do NOT copy news posts to me by E-MAIL! This message is from the IEEE EMC

Re: dmax test

it to cool down between switch-on events. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional sound reinforcement and distribution? Then go to http://www.isce.org.uk PLEASE do NOT copy news posts to me by E-MAIL! This message is from

Re: D of C for medical P.S.

. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional sound reinforcement and distribution? Then go to http://www.isce.org.uk PLEASE do NOT copy news posts to me by E-MAIL! This message is from the IEEE EMC Society Product Safety Technical

Re: D of C for medical P.S.

the engineering basis for your declaration. That's what I would recommend, but I don't know enough about 60601-1 to be definite. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional sound reinforcement and distribution? Then go to http

Re: AC feed fail changeover relay

two contact sets in series. The contact gaps when open may need to be 3 mm or some other minimum length, depending on your national regulations. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional sound reinforcement and distribution? Then go

Re: dmax test

I read in !emc-pstc that John Woodgate j...@jmwa.demon.co.uk wrote (in yjwjuocwx7w+e...@jmwa.demon.co.uk) about 'dmax test' on Tue, 25 Feb 2003: I will forward you message to someone who is in a VERY good position to advise, but whose name I may not reveal. Watch this space. Well, I did

Re: Custom Units in EU

to be followed if that is not so in a particular case. After all - we cannot PROVE something is safe - the best we can do is to eliminate the potential hazards that we can find. Quite right. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional

Re: dmax test

the requirement of the amendment without requiring modification to the unsupported test equipment. Comments? I will forward you message to someone who is in a VERY good position to advise, but whose name I may not reveal. Watch this space. -- Regards, John Woodgate, OOO - Own Opinions Only. http

Re: GOST standards

. There is a GOST web page, with an English version, at http://www.gost.ru -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional sound reinforcement and distribution? Then go to http://www.isce.org.uk PLEASE do NOT copy news posts to me by E-MAIL

Re: IEC 61010 requirements

performing an operation. Does that make his cellular comply with IEC 601-1? Maybe not, but there are VERY serious EMC issues. No cell-phone should be switched on in an OR. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional sound reinforcement

Re: Harmonics Testing for PCs

with active input power not exceeding 600 W. So you can't apply Class D limits above 600 W. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional sound reinforcement and distribution? Then go to http://www.isce.org.uk PLEASE do NOT copy news posts

Re: Harmonics Testing for PCs

that the product: QUOTE has essentially 6 rack mounted PCs and a custom designed graphics processor. ENDQUOTE If that isn't ITE, I don't know what is. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional sound reinforcement and distribution? Then go

Re: Harmonics Testing for PCs

of difference whether the 5th harmonic or the 37th failed! -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Interested in professional sound reinforcement and distribution? Then go to http://www.isce.org.uk PLEASE do NOT copy news posts to me by E-MAIL

Re: IEC 61010 requirements

to be that the 'medical' standards for emissions and immunity should be applied, but **applied with insight**. Provisions of the standards that are irrelevant for the equipment in question need not apply, but all such exceptions MUST be documented. -- Regards, John Woodgate, OOO - Own Opinions Only

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