http://www.ieee-pses.org/symposium http://www.emc2004.org/
group, for GR- 474, is it the same criteria for blinking vs. solid LED status? I know the guidleines for color of LED's status but an internal quesiton came up about blinking? I am not sure how the gr-474 handles blinking, or temporary states of function... thank you, Richard. From: [email protected] [mailto:[email protected]]On Behalf Of John Jankowski Sent: Wednesday, December 24, 2003 11:12 AM To: 'Carpentier Kristiaan'; [email protected] Subject: RE: IEC60950-1: compliance of LEDs Kris, LED's and panel displays were introduced into the International Standard IEC-60825, Safety of Laser Products, several years ago for just the reasons you have mentioned. After the introduction of solid state lasers, it was apparent that the similarities in manufacturing/operation of these devices closely matched those of LED's already on the market. I sat on the US TAG TC-76 in a former life, and the inclusion of these devices at the time created much debate (still does). It is this standard, current version I believe is 60825-1 Edition 1.2, that manufacturers of LED's should state compliance. Annex "G" of this standard specifically provides a listing of the radiometric specification of Light Emitting Diodes, including Infrared devices needed to show compliance if the device is not inherently Class 1. The provisions of these specifications by manufacturers of LED's would be of great use to those of us who incorporate such devices into our end products. --- Some of the essential data recommended in Annex G includes --- Peak wavelength, in nanometers Divergence, half intensity angles Apparent source size or angular subtense Location of apparent source from a stated reference surface Radiant intensity min - max, etc. Regards, John A. Jankowski Computer Network Technologies From: Carpentier Kristiaan [mailto:[email protected]] Sent: Wednesday, December 24, 2003 9:02 AM To: [email protected] Subject: IEC60950-1: compliance of LEDs Hi group, What information should be provided by the LED manufacturer to show that panel indicating LED's comply with IEC60950-1, clause 4.3.13.5.? I raise this question because panel light LED's are having a very high brightness nowadays. Vriendelijke Groeten, Best regards, Meilleures salutations, Kris Carpentier This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ieee-pses.org/ To cancel your subscription, send mail to: [email protected] with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Ron Pickard: [email protected] Dave Heald: [email protected] For policy questions, send mail to: Richard Nute: [email protected] Jim Bacher: [email protected] All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ieee-pses.org/ To cancel your subscription, send mail to: [email protected] with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Ron Pickard: [email protected] Dave Heald: [email protected] For policy questions, send mail to: Richard Nute: [email protected] Jim Bacher: [email protected] All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. IEEE PSES Main Website: http://www.ieee-pses.org/ To post a message send your e-mail to [email protected] Instructions for use of the list server: http://listserv.ieee.org/listserv/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Ron Pickard: [email protected] Dave Heald: [email protected] For policy questions, send mail to: Richard Nute: [email protected] Jim Bacher: [email protected] All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc
