UL requirement for driver

Hi, I am basically an EMC guy and do not know much about UL requirements. I would like to know if there are any UL requirements for a driver with output voltage swing of +/- 30V peak-to-peak. The RMS voltage will be much smaller, and the power will be less than 0.5 watt. The driver is to be

Re: Limited Current

Hi Rick: I am working on a project that delivers 8 KV to 1 CRTs mounted on a helmet mounted display. The output of the high voltage supply is limited to 100uA and assuming that the supply complies with paragraph 2.4 (2.4.4 in particular) Paragraph 2.4.1 states that: Note that

Limited Current

I am working on a project that delivers 8 KV to 1 CRTs mounted on a helmet mounted display. The output of the high voltage supply is limited to 100uA and assuming that the supply complies with paragraph 2.4 (2.4.4 in particular) Paragraph 2.4.1 states that: Except as permitted in 2.4.6,

Re: WTC - voice alarm system?

I read in !emc-pstc that Ken Javor ken.ja...@emccompliance.com wrote (in 20010917141507.LMHT9391.femail30.sdc1.sfba.home.com@[65.11.150.27] ) about 'WTC - voice alarm system?', on Mon, 17 Sep 2001: I'm not certain (I wasn't there) but I heard that there were announcements in the 2nd tower that

RE: European Economic Area

Try: http://www.bakom.ch Regards, Tom Smith Manager, Homologation and Safety Sanmina Canada ULC Phone (403) 295-5156 Cell Phone (403) 875-1291 FAX (403) 295-8862 Email: tom.sm...@sanmina.com -Original Message- From: owner-emc-p...@majordomo.ieee.org

paper posted

Hi All, I have posted the paper I just delivered at the EOS/ESD Symposium in Portland, OR titled The EMI/ESD Environment of Large Server Installations. If you work a server company, supplier to such, or in an organization that maintains servers, you may be interested in this paper. It is posted

Re: WTC - voice alarm system?

I'm not certain (I wasn't there) but I heard that there were announcements in the 2nd tower that was hit after the first tower was hit to sit tight and not evacuate because at that point they still thought it was an accident and they didn't need a whole bunch of people evacuating the 2nd tower

RE: Swiss Web Site

Thank you, Pierre-Marie. The site is nicely organized. I perused the subject of RTTE on the referenced site. It appears that this particular directive has been adopted by Switzerland. This site did not address the EMC Directive. Don Umbdenstock Sensormatic -- From:

RE: Swiss Web Site

hi there, may be you can look at : http://www.bakom.ch/eng/subpage/?category_51.html Pierre-Marie Andre Intel Sophia Senior Approval Engineer Tel : +33 (0) 4 93 00 14 13 Fax : +33 (0) 4 93 00 14 01 http://www.intel.com -Original Message- From: am...@westin.org

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

Re: UL vs CSA (IT product)

No extra cost in testing, you ask UL to evaluate to UL60950 and CSA22.2 60950 at the same time. No extra label cost either as you can now use the single cUL mark. You still have the product in one volume of the file, so you pay the same tri monthly inspection fees. am...@westin.org wrote:

RE: UL vs CSA (IT product)

Amund Not quite To enable you to apply the UL/cUL labels, UL will test your product to UL1950 for the USA and CSA22.2 No 60950 for Canada. The extra cost for testing to CSA22.2 No 60950 will depend on how much the Canadian deviations differ from the US Deviations of IEC60950. My

Re: UL vs CSA (IT product)

So, if we choose UL for approvals in North America (US Canada) we have to mark the products with the UL and cUL labels ? I guess that there will be no addition testing (only use UL1950), but there might be some additional costs for using both labels right ? Best regards Amund Westin,

Re: European Economic Area

Thanks Brian for giving us an updating on the status in Switzerland. Does it exist any web-site describing the Swiss EMC, telecom and safety requirements ? Best regards Amund Westin, Oslo/Norway On Fri, 14 Sep 2001 15:35:23 +0100 Brian Jones e...@brianjones.co.uk wrote: Richard and everyone

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