Re: Heatsinks and EMI
I read in !emc-pstc that Georgerian, Richard RGeorgerian@carrieraccess. com wrote (in CA24DEAE7DA1D611B69C0060CF20550F931B85@newman.carrieracc ess.com) about 'Heatsinks and EMI' on Tue, 24 Sep 2002: Many thanks to all those that responded. I believe I have enough to information to get myself started on understanding the role heat sinks play in radiated emissions. You might also bear in mind that, in spite of their relatively low surface temperature, they do lose a significant proportion of the *heat* by radiation. (If they are not bright and shiny, that is.) -- 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 emc-pstc discussion list. Visit our web site at: http://www.ewh.ieee.org/soc/emcs/pstc/ To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Ron Pickard: emc-p...@hypercom.com Dave Heald: davehe...@attbi.com For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://ieeepstc.mindcruiser.com/ Click on browse and then emc-pstc mailing list
RE: Heatsinks and EMI
Greetings All, Many thanks to all those that responded. I believe I have enough to information to get myself started on understanding the role heat sinks play in radiated emissions. Richard = Richard Georgerian Compliance Engineer Carrier Access Corporation 5395 Pearl Parkway Boulder, CO 80301 USA Tele: 303-218-5748 Fax: 303-218-5503 mailto:rgeorger...@carrieraccess.com -Original Message- From: Georgerian, Richard Sent: Monday, September 16, 2002 7:58 AM To: 'IEEE emc-pstc' Subject: Heatsinks and EMI Greetings All, I sort of remember reading an article on heatsinks and radiated emissions within the past 12 months. In short, the article indicated that the fins of the heatsink should be considered an antenna regarding radiated emissions. Has anyone else remember seeing such an article? If so, can you send me where I might again find it. I have tried the archives of RF Design, Conformity, Evaluation Engineering and Power Electronics. Search on the web on 'heatsinks + emi did not prove fruitful. Thanks in-advance. Richard Georgerian Compliance Engineer Carrier Access Corporation 5395 Pearl Parkway Boulder, CO 80301 USA Tele: 303-218-5748Fax: 303-218-5503 mailto:rgeorger...@carrieraccess.com * This e-mail transmission, and any documents, files, or previous e-mail messages attached to it may contain information that is confidential or legally privileged. If you are not the intended recipient, or a person responsible for delivering it to the intended recipient, you are hereby notified that you must not read this transmission and that any disclosure, copying, printing, distribution, or use of any of the information contained in or attached to this transmission is strictly prohibited. If you have received this transmission in error, please immediately notify the sender by telephone or return e-mail and delete the original transmission and its attachments without reading or saving them in any manner. Thank you. *
Re: Heatsinks and EMI
Heatsinks and EMIAny metallic structure capable of carrying circulating currents will radiate. Ungrounded heatsinks can be particularly susceptible to radiation, or carrying crosstalk from one part of a circuit to another part. Regards, Doug McKean --- 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/ To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Ron Pickard: emc-p...@hypercom.com Dave Heald: davehe...@attbi.com For policy questions, send mail to: Richard Nute: ri...@ieee.org Jim Bacher: j.bac...@ieee.org All emc-pstc postings are archived and searchable on the web at: http://ieeepstc.mindcruiser.com/ Click on browse and then emc-pstc mailing list
Heatsinks and EMI
Greetings All, I sort of remember reading an article on heatsinks and radiated emissions within the past 12 months. In short, the article indicated that the fins of the heatsink should be considered an antenna regarding radiated emissions. Has anyone else remember seeing such an article? If so, can you send me where I might again find it. I have tried the archives of RF Design, Conformity, Evaluation Engineering and Power Electronics. Search on the web on 'heatsinks + emi did not prove fruitful. Thanks in-advance. Richard Georgerian Compliance Engineer Carrier Access Corporation 5395 Pearl Parkway Boulder, CO 80301 USA Tele: 303-218-5748 Fax: 303-218-5503 mailto:rgeorger...@carrieraccess.com * This e-mail transmission, and any documents, files, or previous e-mail messages attached to it may contain information that is confidential or legally privileged. If you are not the intended recipient, or a person responsible for delivering it to the intended recipient, you are hereby notified that you must not read this transmission and that any disclosure, copying, printing, distribution, or use of any of the information contained in or attached to this transmission is strictly prohibited. If you have received this transmission in error, please immediately notify the sender by telephone or return e-mail and delete the original transmission and its attachments without reading or saving them in any manner. Thank you. *
