The relationship between Amps per meter and Teslas is easily derived from the basic relationship:
B = uH, where B is magnetic induction in Teslas or Webers per square meter, u = permeability of material which has units of Henries per meter, H = magnetic field, with units of Amperes per meter. >From: "Gordon,Ian" <[email protected]> >To: "'IEEE EMC-PSTC GROUP'" <[email protected]> >Subject: CALIBRATION AND CONSTRUCTION OF HELMHOLTZ COILS >Date: Thu, Jan 23, 2003, 9:15 AM > > > All > I would like to construct a Helmholtz coil to perform magnetic field > immunity testing at DC frequencies and thus simulate the effect of a > permanent magnet. There are some details on construction in EN61000-4-8 > which details power frequency magnetic field immunity testing within the > scope of the EMC directive. However the fields referred to are measured in > A/m, whereas I need a field of, for example, 5mTesla. > Can anybody advise me as to how to construct such a coil with a test volume > of 0.5 x 0.5 x 0.5m and a field of 5mTesla? > Thanks > Ian Gordon > > > _____________________________________________________________________ > This e-mail has been scanned for viruses by the WorldCom Internet Managed > Scanning Service - powered by MessageLabs. For further information visit > http://www.worldcom.com > > ------------------------------------------- > 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: > [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://ieeepstc.mindcruiser.com/ > Click on "browse" and then "emc-pstc mailing list" > 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: [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://ieeepstc.mindcruiser.com/ Click on "browse" and then "emc-pstc mailing list"
