In message <[email protected]>, dated Sat, 26 Dec 2009, Moshe Henig <[email protected]> writes:
>What are the hazards (if there is any) of electromagnetic field in the >frequency range 200 to 500kHz and Static magnetic field on battery >operation, charging and safety (especially during charging). Since you didn't get any reply, I guess no-one here knows. But you haven't given enough data anyway. What strengths are the fields? My **GUESS** is that HF fields up to at least 10V/m have no effect. Static magnetic field is a more difficult matter, because there may be molecular-level effects. For example, the physical form of one or both of the electrode materials might be affected. The direction of the magnetic field probably matters. If it's not uniform (homogenous), the matter becomes VERY difficult if there is any effect at all. Have you asked a cellphone battery manufacturer? -- OOO - Own Opinions Only. Try www.jmwa.demon.co.uk and www.isce.org.uk John Woodgate, J M Woodgate and Associates, Rayleigh, Essex UK Help stamp out intolerance! - 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]>
