I have several solenoid coils which I use for magnetic exposure. Here's some comparative data:
Inside Diameter Gauss per Amp .16m 26 .28m 2.8 .59m 2.2 So, if Lisa only had a cell-phone sized gadget, I could get it into my smallest coil, and 3 Amps would yield about 75 Gauss. But if it was larger, I might have to use the big coil, and I would have to drive about 34 Amps to get 75 Gauss. At DC, that's not too much of a problem. Driving at AC frequencies is a lot more difficult. Regards, Ed Ed Price [email protected] Electromagnetic Compatibility Lab Cubic Defense Systems San Diego, CA USA 858-505-2780 (Voice) 858-505-1583 (Fax) Military & Avionics EMC Services Is Our Specialty Shake-Bake-Shock - Metrology - Reliability Analysis >-----Original Message----- >From: Ken Javor [mailto:[email protected]] >Sent: Thursday, June 13, 2002 9:14 AM >To: Mike Cantwell; [email protected] >Subject: Re: Magnetics testing > > > >I don't know labs who does this kind of work, but I don't >think the original >request is that "out there." I think more info is needed (at >least by me). >If this is at 50/60 Hz, I don't think it is that bad. Looks >like around 100 >Amps would be necessary. Not your typical Helmholtz coil, but >not outside >the bounds of reality. Depends a lot on the size of the test >item. If it >is small compared to a breadbox, then the 100 Amp number could >come down >substantially. > >---------- >>From: Mike Cantwell <[email protected]> >>To: [email protected] >>Subject: RE: Magnetics testing >>Date: Thu, Jun 13, 2002, 9:08 AM >> > >> >> >> 30 to 80 Gauss is equivalent to about 6500 A/m. This is an >enormous field!!! >> >> Do you have the right units? >> >> >> >> -----Original Message----- >> From: [email protected] [mailto:[email protected]] >> Sent: Thursday, June 13, 2002 6:40 AM >> To: [email protected] >> Subject: Magnetics testing >> >> >> >> Hello All, >> >> I am wondering if anyone knows of a test lab in the >northeast capable of >> generating a magnetic field strength of 30 to 80 Gauss? >> >> thanks >> >> Regards, >> >> Lisa >> >> Lisa A. Cefalo, CRE >> Manager, Reliability and Design Services >> MKS Instruments >> (978)-975-2350 X 5669 >> [email protected] ------------------------------------------- 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"
