I read in !emc-pstc that John Woodgate <[email protected]> wrote (in <[email protected]>) about 'Pace makers, speakers, magnetic fields' on Mon, 8 Mar 2004: >I read in !emc-pstc that Chuck McDowell <[email protected]> wrote >(in <[email protected]>) about >'Pace makers, speakers, magnetic fields' on Mon, 8 Mar 2004: > >>Surprised John W. did not mention magnetic fields from EN 55103-1 & 2 >>although the standard is for Professional Audio. > >I didn't mention it because the limits are purely for compatibility with >other electronic equipment and are very definitely nothing to do with >any putative biological effects.
However, I should have remembered to mention the emission limits for computer monitors, even though the limits seem to have been determined by undisclosed methods. The prime mover has been Swedish trade unions, AIUI, and the situation can be illustrated by the fact that extremely soon after an initial set of limits had been agreed, there was a demand for limits about ten times more stringent. The emissions were said to cause symptoms like headaches, muscle pains, loss of concentration .... Of course the simple action of sitting at the keyboard and concentrating intensively on the display played no part in this; it was the RADIATION!!!!!!! that caused it all. -- Regards, John Woodgate, OOO - Own Opinions Only. The good news is that nothing is compulsory. The bad news is that everything is prohibited. http://www.jmwa.demon.co.uk Also see http://www.isce.org.uk This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. Visit our web site at: http://www.ieee-pses.org/ To cancel your subscription, send mail to: [email protected] with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Ron Pickard: [email protected] Dave Heald: [email protected] For policy questions, send mail to: Richard Nute: [email protected] Jim Bacher: [email protected] All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc
