In message <9d04b979323dcd428297dda95108893e032ae...@bb-corp-ex2.corp.cubic.cub>, dated Mon, 21 Sep 2009, "Price, Edward" <[email protected]> writes:
>When the solenoid is de-energized, isn't there a large and fast voltage >generated? When a solenoid manufacturer puts a diode across the coil to >limit the voltage, doesn't the large current flowing through the diode >and coil create a spectral distribution of energy? Perhaps the >Directive ignores the short duration burst, but I don't think you can >call a solenoid coil completely benign. They are usually quite well shielded for electric fields, and the EMC standards are rather 'soft' on magnetic fields because they rarely cause problems. -- OOO - Own Opinions Only. Try www.jmwa.demon.co.uk and www.isce.org.uk Things can always get better. But that's not the only option. John Woodgate, J M Woodgate and Associates, Rayleigh, Essex UK - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to <[email protected]> All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc Graphics (in well-used formats), large files, etc. can be posted to that URL. Website: http://www.ieee-pses.org/ 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]>
