If this is for a motion control application (where the switch is used for homing an axis say), my personal experience has been that the magnetically activated sensors (especially the reed ones) have a lower repeatability (and accuracy as a matter of fact) than say inductive proximity sensors. I have never tried to spend the time and figure our the physics of why this is so, but I avoid magnetic sensors in any motion control related application. I don't see this as an issue if you are just using them as a substitute for a mechanical pushbutton however. Madhu ----- Original Message ----- From: "Olin Lathrop" To: Sent: Wednesday, February 20, 2002 5:39 PM Subject: Re: [EE]: Magnetically Activated Switches > > Has anyone had experience with Magnetically activated switches? I am > > looking for experience and insight with a "behind the panel" scenario. > > Just need one input. Specifically I'd like to learn about good devices, > > hidden 'gotchas', low cost alternatives, etc. Thanks and appreciate any > > and all insights. Have a great day > > Check out "reed switches". I think they are exactly what you are looking > for. > > > ******************************************************************** > Olin Lathrop, embedded systems consultant in Littleton Massachusetts > (978) 742-9014, olin@embedinc.com, http://www.embedinc.com > > -- > http://www.piclist.com hint: To leave the PICList > mailto:piclist-unsubscribe-request@mitvma.mit.edu > > -- http://www.piclist.com hint: To leave the PICList mailto:piclist-unsubscribe-request@mitvma.mit.edu