You will not be likely to get 100A through a 1mm conductor. The best solution in this case is a current transformer with a rectifier circuit if it is AC and an Arduino. I am busy with just such a project for my plasma machine. Remember to put a very low ohmage resistor across the transformer secondary. Read the volt drop across that and translate it to current.
On 2013/03/17 10:06 PM, Przemek Klosowski wrote: > On Sun, Mar 17, 2013 at 3:49 PM, Richard Ray <kqt4a...@gmail.com> wrote: >> On Sun, 17 Mar 2013, Jon Elson wrote: >>> Beware of getting magnets near the sensor, it will be affected >>> even by the earth's magnetic field, so if you pick up the >>> equipment and move it, the zero will shift. >>> >> So does that mean that since this is modiles equipment that a hall sensor >> will not work > Well, it depends---since the original poster wanted to measure up to > 100A, it would probably work to the extent that the fields due to such > strong currents are stronger than the earth's field which is a > fraction of a gauss (0.1 milliTesla). If you place a sensor next to a > 1mm conductor running 100A you should see around 200 gauss (B=mu0 > I/2piR), so maybe it's acceptable. > > -- Regards / Groete Marius D. Liebenberg MasterCut cc Cel: +27 82 698 3251 Tel: +27 12 743 6064 Fax: +27 86 551 8029 Skype: marius_d.liebenberg Skype Me^(TM)! <skype:marius_d.liebenberg?call> Get Skype <http://www.skype.com/go/download> and call me for free. --- avast! Antivirus: Outbound message clean. Virus Database (VPS): 130317-1, 2013/03/17 Tested on: 2013/03/18 07:25:14 AM avast! - copyright (c) 1988-2013 AVAST Software. http://www.avast.com ------------------------------------------------------------------------------ Everyone hates slow websites. So do we. Make your web apps faster with AppDynamics Download AppDynamics Lite for free today: http://p.sf.net/sfu/appdyn_d2d_mar _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
