Path: utzoo!utgpu!news-server.csri.toronto.edu!bonnie.concordia.ca!thunder.mcrcim.mcgill.edu!snorkelwacker.mit.edu!think.com!zaphod.mps.ohio-state.edu!swrinde!elroy.jpl.nasa.gov!ncar!asuvax!mcdphx!qisoff!QIS1.mcdphx.mot.com!hbg6 From: hbg6@QIS1.mcdphx.mot.com (John Schuch) Newsgroups: sci.electronics Subject: hall effect sensors Message-ID: <12536@qisoff.phx.mcd.mot.com> Date: 20 Jun 91 13:10:24 GMT References: <3372@ria.ccs.uwo.ca> Sender: news@qisoff.phx.mcd.mot.com Reply-To: hbg6@QIS1.mcdphx.mot.com (John Schuch) Organization: Motorola Microcomputer Division, Tempe, Az. Lines: 25 After reading the construction article "Build A Solid State Compass" ( June 91, Radio Electronics ) I thought of a different application of the thing but have a question for the net. I understand Hall Effect Sensors produce a voltage when magnetic lines of flux pass through their body at a right angle. Does the output vary depending on the polarity of the magnetism? That is, is the output different depending on whether you place the North end or South end of a bar magnet next to the device? Also; Has anyone out there built one of these? Anyone know who sells HES in low quantities? (Sprague UGN3503U) Anyone interested in how mine turns out :-) Thanks, John ..................................................................... Send mail to hbg6@QIS1.mcdphx.mot.com ..................................................................... John Schuch - Motorola Inc., Computer Systems Division (602)438-3008 All opinions expressed are mine and not Motorolas, their loss. .....................................................................