In message <[email protected]>, dated Tue, 6 Feb 2007, Bill Owsley <[email protected]> writes
>magnetostrictive action ??? No. Wrong term. It should be magnetodynamic. >and I thought that's what made transformers hummmmmmm... Yes; magnetostriction causes magnetic materials to change dimensions under the influence of a varying magnetic field. >(ps. buzzing is from loose laminations, to differentiate between >humming and buzzing noises.) >Maybe the traces jumping off the board had something to do with the >Biot-Savart law, or one of those other fancy named effects. No, not Biot-Savart (except trivially). I'm not sure whether anyone other than Faraday has a claim to the mechanical effects of a magnetic field. Perhaps Ampère. Or an Ancient Greek, if we allow permanent magnets! -- OOO - Own Opinions Only. Try www.jmwa.demon.co.uk and www.isce.org.uk There are benefits from being irrational - just ask the square root of 2. John Woodgate, J M Woodgate and Associates, Rayleigh, Essex UK - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. Website: http://www.ieee-pses.org/ To post a message to the list, send your e-mail to [email protected] Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas [email protected] Mike Cantwell [email protected] For policy questions, send mail to: Jim Bacher: [email protected] David Heald: [email protected] All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc ______________________________________________________________________ This email has been scanned by the MessageLabs Email Security System. For more information please visit http://www.messagelabs.com/email ______________________________________________________________________
