Re: Allowable Sound Pressure/Power Levels

I read in !emc-pstc that jsarell...@tuvam.com wrote (in 3187EE460C488A4 58d4dc186f40edc217a5...@exchdan.us.tuvworld.com) about 'Allowable Sound Pressure/Power Levels', on Fri, 28 Sep 2001: sound pressure level of 85kBA That's almost as loud as the average pop concert! (;-) -- Regards, John

Re: ESD Immunity Testing

, but ... -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Eat mink and be dreary! --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc

Re: ESD Immunity Testing

acknowledged in the standards? Perhaps because products that pass the tests, however minimal, prove sufficiently immune in practice. I feel sure that if tested products were falling over in the field in large numbers, there would be swift moves to make the test more stringent. -- Regards, John Woodgate, OOO

Re: Applying the appropriate ENs

upon '950 What do you mean by a 'CDR'? And does 'pocket' mean that it is battery- operated? -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Eat mink and be dreary! --- This message is from the IEEE EMC Society Product Safety

Re: Thin Insulation (Electrical) Material

for this purpose is polyethylene terephthalate ('polyester') sheet, which is tough and has a high dielectric strength. Wide-range distributors are not the best source for this sort of material. Try a web search for 'polyester sheet'; http://www.krempel-group.com could be helpful, too. -- Regards, John Woodgate

Re: Applying the appropriate ENs

. This may be down to the presenter, rather than to the question of whether medical products require special safety standards (which they do). -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Eat mink and be dreary

Re: Applying the appropriate ENs

the standards, not a 'Technical File Route' file). You then cite all the relevant standards in your DOC. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Eat mink and be dreary! --- This message is from the IEEE EMC Society Product

Re: Steel ball for impact tests

at them. Don't forget to defrost the carcasses! -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Eat mink and be dreary! --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list

Re: Photo Sensitive Epilepsy. (PSE)

for 'epilepsy AND photosensitivity' will probably give you more information that you will ever need. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Eat mink and be dreary! --- This message is from the IEEE EMC Society Product

Re: Steel ball for impact tests

release hole diameter: 4.000 mm Air release hole pitch: 45.000 mm Colour: Optional, but uniform and subdued. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Eat mink and be dreary! --- This message is from the IEEE EMC

Re: Steel ball for impact tests

, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Eat mink and be dreary! --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc

Re: Steel ball for impact tests

clause 4.2.5. (50mm diameter, 500g) Find a caravan and get your hacksaw.(;-) A metric towing ball is 50 mm diameter. I'm not sure about the mass; I get 517 g for a mild steel ball. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Eat mink and be dreary

Re: performance criterion A

exists, EN 55103-1/2. The immunity part, EN 55103-2, does call up the 'manufacturer's stated degradation' concept. In fact, it sets no limits at all, only test conditions, but every test result has to be stated by the manufacturer. -- Regards, John Woodgate, OOO - Own Opinions Only. http

Re: performance criterion A

, a signal-to-interference ratio of 40 dB is pretty dismal in the context of a hi-fi amplifier with a signal-to-noise ratio of 90 dB or more. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Eat mink and be dreary! --- This message

Re: Limited Current

. I think a lead- or borate-glass disc in front of the screen would be advisable as a precaution. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Eat mink and be dreary! --- This message is from the IEEE EMC Society Product

Re: WTC - voice alarm system?

to such systems through relevant international and other standards. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Eat mink and be dreary! --- This message is from the IEEE EMC Society Product Safety Technical Committee emc

Re: Limited Current

? 8 kV seems high for 1 inch tubes, anyway. The 1CP1 used to require less than 1 kV, IIRC. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Eat mink and be dreary! --- This message is from the IEEE EMC Society Product Safety

Re: WTC - voice alarm system?

replied to my post. The point about voice alarm with central control is that instructions can be quickly changed and everyone gets informed simultaneously. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Eat mink and be dreary

Re: WTC - voice alarm system?

I read in !emc-pstc that John Woodgate j...@jmwa.demon.co.uk wrote (in lypxayanlap7e...@jmwa.demon.co.uk) about 'WTC - voice alarm system?', on Mon, 17 Sep 2001: Does anyone know **for certain** whether the WTC had a voice-alarm system for emergency control, evacuation, etc.? Someone has told me

WTC - voice alarm system?

Does anyone know **for certain** whether the WTC had a voice-alarm system for emergency control, evacuation, etc.? -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Eat mink and be dreary! --- This message is from the IEEE

Re: consumer equipment on board marine vessels

the implications of this. The insurers of the boats might be a useful source of information on this matter. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Eat mink and be dreary! --- This message is from the IEEE EMC Society Product

Re: UL approval IT equipment

with UL during the audits (4 times a year). Am I right ? The obvious thing to do is to ask UL. They may think that the local test house is very reliable and accept its approval, or they may not. Only they can tell you. -- Regards, John Woodgate, OOO - Own Opinions Only. http

Re: ENV 50121-5

be made available. These are available for SOME amendments on the public part of the IEC web site http://www.iec.ch -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Eat mink and be dreary! --- This message is from the IEEE EMC

Re: ENV 50121-5

. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Eat mink and be dreary! --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc

Re: Sound Engineering Practice

the influence of mind-enhancing substances. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Eat mink and be dreary! --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit

Re: STP vs FTP Ethernet cables (2)

useful frequency in the signal. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co..uk Eat mink and be dreary! --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web

Re: ENV 50121-5

experiences; and that's why we see so many questions in the EMC-PSTC regarding standards applicability. Some companies do care about the cost of that $75 standard. I tend to compare the cost of the standard with the cost of the POS material that is binned! -- Regards, John Woodgate, OOO - Own

Re: Noise from flourescent light ballasts?

range. Yes, if they are high-frequency ballasts. (Maybe that's why holding it to the lights sets it off.) But what about the hand waving? If I assume the ballasts are giving off emissions, can I also assume that the human body can change the local field pattern? Yes. -- Regards, John Woodgate

Re: Installation Category III; UL60950

intense review over the last few years. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Eat mink and be dreary! --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our

Re: ENV 50121-5

applications. Electromagnetic compatibility. Fixed installations. What tests does it specify? What limits does it specify for tests? What you are effectively asking for is the whole text of the standard. Not sensible, not possible. Pay your USD75 or so for it. -- Regards, John Woodgate, OOO - Own Opinions

Re: Military Equimpment and the EU

I read in !emc-pstc that wo...@sensormatic.com wrote (in 846BF526A205F8 4BA2B6045BBF7E9A6A43A272@flbocexu05) about 'Military Equimpment and the EU', on Tue, 4 Sep 2001: I forgot one - the Battery Directive applies to all batteries. Anti-aircraft batteries? (;-) -- Regards, John Woodgate, OOO

Re: Military Equimpment and the EU

requirements -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Eat mink and be dreary! --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http

Re: Military Equimpment and the EU

military (member of the EU). Your customer has not told you what its EMC requirements are? It certainly should have! -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Eat mink and be dreary! --- This message is from the IEEE

Re: CONDUCTED NOISE 2kHz-20 kHz STANDARDS

are just for that, harmonics) That's one of the problems. Filter capacitance values have to be so high that their power-frequency current draw is not negligible, and don't even THINK about the leakage current involved in attenuating common-mode noise in this frequency range. -- Regards, John

Re: standard for Epilation device?

that it does not cover any invasive technique. Beauty salons are normally found in shopping centres so could this imply some sort of light industrial standard such as EN61010? Absolutely NOT! -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Eat mink and be dreary

Re: Isolation Transformer improvements article

an interesting point; do you have test results to illustrate it? -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Eat mink and be dreary! --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc

Re: CE marking 'e' mark products

) that in someway guarantees that any EFTs and Surge voltages are dealt with satisfactorily i.e. not coupled through? Simply that it conforms either to the product standard applicable to your product or to the standard for stand-alone power supplies. -- Regards, John Woodgate, OOO - Own Opinions

Re: EN 61000-3-3

. If there is a mains transformer, this applies to switch-off as well as switch-on. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Eat mink and be dreary! --- This message is from the IEEE EMC Society Product Safety Technical

Re: EN 61000-3-3

of' made available. Even so, I don't feel that I can post it to the group, especially as it's a .pdf, so it will appear in your mailbox in due course. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Eat mink and be dreary

Re: EN 60335 - test lab and toilets

tell us what standard they propose to test to. I hope it's not EN60950! -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Eat mink and be dreary! --- This message is from the IEEE EMC Society Product Safety Technical Committee

Re: Packaging Weight

for marking packages above a specific mass, so that may indeed be in a new version of the Directive or in an associated standard. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Eat mink and be dreary! --- This message

Re: EN 60335 - test lab and toilets

of the SC61* sub-committees. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Eat mink and be dreary! --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web

Re: Medical application-Isolation voltage

rated ac-dc converter I can find is 3500v RMS continuous. Complain to the converter manufacturers that you can't buy their product because it doesn't meet the standard. It's their problem, not yours! -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Eat mink

Re: EN61800-3:1996 Specification

or abstraction from standards: there are notes and cross-references that can put a specific and counter-intuitive meaning on to some texts. Posting accurate and extensive paraphrases is also a copyright violation, of course. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk

Re: EN61000-3-2,3

private LV supply and you only need to meet IEC/EN61000-3-6 guidelines at the MV or HV terminals. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Eat mink and be dreary! --- This message is from the IEEE EMC Society Product

Re: CE test suite for computers

for the 'pollution', and regard equipment- level control as the Only Solution. Compared with this mantra-oriented attitude, the ESI people are pussy-cats (now!). -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Eat mink and be dreary

Re: EN50082-1 vs EN55024 - ITE Products

to buy the standards that apply to your products. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Eat mink and be dreary! --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list

Re: Immunity testing of Headset

in antennas, CISPR receivers etc., can do are two potentially very different things! -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co..uk Eat mink and be dreary! --- This message is from the IEEE EMC Society Product Safety

Re: Immunity testing of Headset

it will receive attention. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Eat mink and be dreary! --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site

Re: EN60601 vs EN60950 and EN60065

Auty? (;-) -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Eat mink and be dreary! --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http

Re: Manufacturing Hipot Testing

be excused. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Eat mink and be dreary! --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http

Re: TS0098/96 ?

for it, they must know what it is, surely? -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Eat mink and be dreary! --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list

Re: FTEG

is asking for it, they must know what it is, surely? -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Eat mink and be dreary! --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion

Re: Vertical Ground Plane

emission performed on an EUT placed on an 80 CM table with or without a vertical wall 40 CM from the rear of the EUT. That may depend on the type of EUT - unless you have tested everything!(;-) -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Eat mink and be dreary

Re: Manufacturing Hipot Testing

. In this case, it is now the practice not to do a hi-pot test at all, but an insulation resistance test. (There is a problem with this as well, but that's another subject.) -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Eat mink and be dreary

Re: Manufacturing Hipot Testing

the fancy certificates and the permission to use the marks. TUV (either species) has never, AIUI, been anything other than a commercial test-house. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Eat mink and be dreary

Re: CB Certificates for Apple Macintosh Computers

Macintosh computers: 1. 733 Mhz Power Mac G4 2. 867 Mhz Power Mac G4 3. Dual 800 MHz Power Mac G4 You really should ask Apple for these, especially Apple, who, IMHO, are rather meticulous about formal procedures. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk

Re: Manufacturing Hipot Testing

a report and maybe an expensive certificate and grant permission, in return for more money, to apply a glamorous sticker to the product. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Eat mink and be dreary

Re: Manufacturing Hipot Testing

, Leakage ) are not required by the standards but by the third party certification agencies. No, they are written into IEC standards now. I don't know about UL and CSA. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Eat mink and be dreary

Re: Repair of Transient Generator

information. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Eat mink and be dreary! --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http

Re: CE test suite for computers

(Hydro Quebec is an exception), whereas in Europe they do excite, and the excitement is not entirely groundless. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co..uk Eat mink and be dreary! --- This message is from the IEEE EMC

Re: CE test suite for computers

due to over-voltage. Unfortunately, the European supply industry only cites extreme cases (like a 1MW motor!), and then only grudgingly. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Eat mink and be dreary

Re: CE test suite for computers

Community is adopting the American Energy Star Program?    -- Albeit rendered in their own language!   No-one knows why the EC does anything. (;-) -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co..uk Eat mink and be dreary

Re: CE Mark for AC Power Line Protection Module

, the Generic Standards, EN50081-1 and EN50082-1 apply, unless the product is intended for use in (heavy) industrial premises. Safety is more problematical. There ought to be a specific EN safety standard for such products but I don't think there is. -- Regards, John Woodgate, OOO - Own Opinions Only

Re: Manufacturing Hipot Testing

* experience of volume production. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Eat mink and be dreary! --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web

Re: EMC and power supply

not do any tests? -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Eat mink and be dreary! --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http

Re: CE test suite for computers

trial. I don't understand the drive for EN 61000-3-3. See my comments about voltage change tolerance in my other post. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co..uk Eat mink and be dreary! --- This message is from the IEEE

Re: CE test suite for computers

. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co..uk Eat mink and be dreary! --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http

Re: EMC and power supply

as your ITE product does. AFAIK this is specified in EN55022 - full rated load. You can add resistive load if the power supply is under-run in the configuration being tested. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Eat mink and be dreary

Re: EMC and power supply

. A switchboard assembly for electric power control (just switches, fuses, circuit breakers and meters) is one of the few cases where it is. You must re-test the whole product, unless you can show on technical grounds that it is not necessary to do so. -- Regards, John Woodgate, OOO - Own Opinions Only

Re: FCC rule interpretation (add'l info)

that precisely? In Europe, the limits are specified in dB(uV/m), but no-one has been daft enough to propose limits like 53.9790009... dB(uV/m). -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co..uk Eat mink and be dreary! --- This message

Re: CE test suite for computers

, which are IEC Reports, not adopted as ENs and could only be applied (if you were totally insane!) in the context of a Technical Construction File. -11 is, and -12 will be, far more realistic. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Eat mink and be dreary

Re: Testing for the EMC directive

to be EN55014-1-and -2] apply.' and the complete device is subject to EN55014-2. I guess one could argue that it is sufficient to reference EN 55014-1 and EN55022 on the DoC instead of EN 50081-1. Either way works for me since EN 50081-1 just points to the other documents. -- Regards, John Woodgate, OOO

Re: Testing for the EMC directive

, and vice versa. These product family standards apply with precedence over generic standards. That is quite correct. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Eat mink and be dreary! --- This message is from the IEEE EMC

Re: Testing for the EMC directive

or power rating of the charger. If it is less than 75 W, it is deemed to conform with EN61000-3-2. Above 75 W, the Class A limits apply. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Eat mink and be dreary

Re: TCF for EMC directive

or would one need to obtain it from a Notified Body located in the EU? 10.5 is deleted in 'favour' of the RTTE Directive, isn't it? -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Eat mink and be dreary! --- This message is from

Re: TCF for EMC directive

the standards route now, which has far fewer uncertainties. What sort of product is involved? -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co..uk Eat mink and be dreary! --- This message is from the IEEE EMC Society Product Safety

Re: Egypt Telecom

? They are not on the phone. (;-) -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Eat mink and be dreary! --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http

Re: Hertz Vibration?

the medical? term 'gastric stomach'. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Eat mink and be dreary! --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our

Re:

if this product is applicable to European Market (planned for UK). What is the testing standard required? There is no frequency allocation around 100 MHz for such devices in Europe. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Eat mink and be dreary

Re: Hertz Vibration?

be no mystery if the word 'sixty' occurred before the reported phrase. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk Eat mink and be dreary! --- This message is from the IEEE EMC Society Product Safety Technical Committee

Re: EMSCAN (was TV nostalgia/EMI sniffer goggle)

14.184d3188.28a40...@aol.com, lfresea...@aol.com inimitably wrote: the component side has too great a skyline to give good results. Not these days! Anything more than 5 mm tall and the product won't fit in your pocket. *Everything* has to fit in your pocket(;-) -- Regards, John Woodgate, OOO

Re: ESD - time between successive discharges

might think it is. I agree with most of the rest of your comments. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co..uk This message and its contents are not confidential, privileged or protected by law. Access is only authorised by the intended recipient - this means

Re: ESD - time between successive discharges

product-quality verification programs you wish, but please keep their consideration separate from issues concerning compliance with EU Directives. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk This message and its contents are not confidential, privileged or protected

Re: TV nostalgia

an amplifier and detector to one pixel of a backlit LCD screen. Suitable optics then create a virtual image for each eye to see. Anyone want to have a go? (;-) -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk This message and its contents are not confidential, privileged

Re: EMC Directives and Norway

of this Directive. When this term, Community territory, is used in this guide, it is meant the EEA territory.. Yes, in spite of the Euro-English, that is valid. BUT the *administrative procedures* are NOT necessarily the same, even in EU members states, let alone in other EEA members. -- Regards, John

Re: TV nostalgia

unfeasible. The problem is the poor resolution, even a microwave frequencies, due to the wavelength of the emission. At 150 kHz, the wavelength is 2 km, so only very BIG things are visible. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk This message and its contents

Re: TV nostalgia

were assembled by trained turnips. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk This message and its contents are not confidential, privileged or protected by law. Access is only authorised by the intended recipient - this means YOU! The contents may

Re: Mains fusing - Purchase specifications

to be!) relied on by the OEM, but a 'CE' mark CANNOT. For electronic equipment, CE + CE does NOT equal CE. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk This message and its contents are not confidential, privileged or protected by law. Access is only authorised

Re: Equipment with External Antenna Connections

in Germany and some other countries. There are only recommendations from industry bodies and a BS Code of Practice in UK, and they are not widely observed, particularly about earthing the antenna structure. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk This message

Re: EMC Directives and Norway

. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co..uk This message and its contents are not confidential, privileged or protected by law. Access is only authorised by the intended recipient - this means YOU! The contents may be disclosed to, or used by, anyone and stored

Re: FCC - radiated emission up to 10th harmonic

distributed 10x of the crystal to other chips, 10x was the number. If the multiplier was purely internal to a part like a lot of CPUs and display chips, the crystal frequency was the highest. What about the emissions from the LEDs? (;-) -- Regards, John Woodgate, OOO - Own Opinions Only. http

Re: FCC - radiated emission up to 10th harmonic

FCC 2.1057 is about radiated emission. They say :If the equipment operates below 10GHz: to the tenth harmonic of the highest fundamental frequency or to 40 GHz, whichever is lower. UNQUOTE Pale administrative face speak with forked tongue! (;-) -- Regards, John Woodgate, OOO - Own Opinions Only

Re: TV nostalgia

British (Mazda) valves with B8A bases. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk This message and its contents are not confidential, privileged or protected by law. Access is only authorised by the intended recipient - this means YOU! The contents may

Re: Creepage dist. for more than 1000V ?

be good for throat infections, but don't overdose! -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk This message and its contents are not confidential, privileged or protected by law. Access is only authorised by the intended recipient - this means YOU! The contents

Re: Does anyone have any information on Rendar in England?

1d0833cb3b1d7244b617a0dc8399c27e01c19...@vega.corp.es.com, mkel...@es.com inimitably wrote: I'm looking for contact information for a company named Rendar in England or for their rep or distributor in the U.S. Neutrik (USA), I think. -- Regards, John Woodgate, OOO - Own Opinions Only. http

Re: ESD - time between successive discharges

is that the result depends on the repetition rate, which is not specified in the standard, so that the test results are not repeatable? -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk This message and its contents are not confidential, privileged or protected by law

Re: Creepage dist. for more than 1000V ?

with the previous all-printed designs. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk This message and its contents are not confidential, privileged or protected by law. Access is only authorised by the intended recipient - this means YOU! The contents may be disclosed

Re: Creepage dist. for more than 1000V ?

sb69402e@accusort.com, Terry Meck tjm...@accusort.com inimitably wrote: You can't change the facts. So yes! In the Middle to late 50's. :-) John Woodgate j...@jmwa.demon.co.uk 08/01/01 03:16PM sb67c5fe@accusort.com, Terry Meck tjm...@accusort.com inimitably wrote: I saw the first

Re: Class III anomoly

covered in IEC 61140. It should be the responsibility of a truly 'horizontal' committee, not a product committee with 'horizontal' ambitions. -- Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk This message and its contents are not confidential, privileged or protected

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