I read in !emc-pstc that Fred Townsend <f...@poasana.com> wrote (in <3e3af280.5e519...@poasana.com>) about 'BeCu problem' on Fri, 31 Jan 2003: >John, tubes are like vacuum deposition chambers. I have difficulty believing >that >a fancy form of carbon would be of any use in molded structures, HV, or HVAC. >These conditions are all found in radar tubes.
Well, AIUI, it's actually made under high vacuum conditions, and diamond is very stable, of course. But I wasn't thinking of the applications of BeO in high-power tubes, about which I know very little, but in semiconductor packages and heat-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 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 Archive is being moved, we will announce when it is back on-line. All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc
