http://tech.groups.yahoo.com/group/sensorforum/ Sensor Forum Sat, 21 Nov 2009 20:58:35 GMT kender_a http://tech.groups.yahoo.com/group/sensorforum/message/842 http://tech.groups.yahoo.com/group/sensorforum/message/842 I've built the circuit (see my old message below), but it has a principal flaw. The changes in LED forward voltage in response to changes in current are tiny Thu, 19 Nov 2009 04:59:16 GMT sofiagarrett http://tech.groups.yahoo.com/group/sensorforum/message/841 http://tech.groups.yahoo.com/group/sensorforum/message/841 Please check that company http://www.zyxio.com and their competition on best development ideas for their MEMS Sensor http://www.beamindblower.com Wed, 18 Nov 2009 07:39:35 GMT alistair_george http://tech.groups.yahoo.com/group/sensorforum/message/840 http://tech.groups.yahoo.com/group/sensorforum/message/840 Hi All. I want a IR detector similar to MLX90614ESF but target price $US0.40 in quantity - anyone can offer suggestions? Sun, 18 Oct 2009 05:55:27 GMT Naaraayanan http://tech.groups.yahoo.com/group/sensorforum/message/839 http://tech.groups.yahoo.com/group/sensorforum/message/839 http://www.faqs.org/patents/app/20090134744   http://www.directindustry.com/prod/blackstone-ney-ultrasonics/immersible-ultrasonic-transducer-22616-52159.html Sun, 18 Oct 2009 05:39:36 GMT Naaraayanan http://tech.groups.yahoo.com/group/sensorforum/message/838 http://tech.groups.yahoo.com/group/sensorforum/message/838 Basic colours R , G , B which is computed as R - G , G - B , B - R is used for Colour Identification . Irrespective of Instruments , with this Principle - we Mon, 12 Oct 2009 16:45:16 GMT mennjijo http://tech.groups.yahoo.com/group/sensorforum/message/837 http://tech.groups.yahoo.com/group/sensorforum/message/837 Greetings All: Just wondering if anyone on the list can point me toward a procedure (link, book, steps, other) that can be used to attempt resonance of a 40 Mon, 12 Oct 2009 16:44:39 GMT farashes http://tech.groups.yahoo.com/group/sensorforum/message/836 http://tech.groups.yahoo.com/group/sensorforum/message/836 Dear All, I have some confusion regarding measurement on color sensing instrument that measure colors of a liquid (Actually it is the one that I have made Fri, 02 Oct 2009 16:54:15 GMT kender_a http://tech.groups.yahoo.com/group/sensorforum/message/835 http://tech.groups.yahoo.com/group/sensorforum/message/835 Another good site for repair and troubleshooting is http://www.ifixit.com - Nick Fri, 02 Oct 2009 16:51:44 GMT AlienRelics http://tech.groups.yahoo.com/group/sensorforum/message/834 http://tech.groups.yahoo.com/group/sensorforum/message/834 This isn't really the forum for that. Try Electronics_101. http://groups.yahoo.com/group/Electronics_101/join Full disclosure: I'm listowner of Fri, 02 Oct 2009 03:43:06 GMT bcassady_1 http://tech.groups.yahoo.com/group/sensorforum/message/833 http://tech.groups.yahoo.com/group/sensorforum/message/833 was sorta hoping i could find someone to help me trouble shoot my miller welder...was working fine...now stopped...i have schematics and exploded views Sun, 27 Sep 2009 18:59:38 GMT kender_a http://tech.groups.yahoo.com/group/sensorforum/message/832 http://tech.groups.yahoo.com/group/sensorforum/message/832 Yep. Leaning toward the InAmp approach too. http://www.prolifictec.com/filehost/ground_shifter_rev02.pdf - Nick Fri, 25 Sep 2009 15:24:29 GMT Douglas http://tech.groups.yahoo.com/group/sensorforum/message/831 http://tech.groups.yahoo.com/group/sensorforum/message/831 An instrumentation amplifier comes to mind, maybe an AD620 or an LT1101? SherpaDoug Thu, 24 Sep 2009 23:18:58 GMT Hidayat Rohman http://tech.groups.yahoo.com/group/sensorforum/message/830 http://tech.groups.yahoo.com/group/sensorforum/message/830 In similar cases, i mostly prefer current mirror. The circuitry is simpler than diff-amp and provide better noise immunity. I mostly use diff-amp where there Thu, 24 Sep 2009 17:55:26 GMT kender_a http://tech.groups.yahoo.com/group/sensorforum/message/829 http://tech.groups.yahoo.com/group/sensorforum/message/829 Colleagues, Could you provide some ideas, insights or typical solutions for the following problem. I have 2 ground "domains" in my system. They are Mon, 21 Sep 2009 20:28:04 GMT sue chappelle http://tech.groups.yahoo.com/group/sensorforum/message/828 http://tech.groups.yahoo.com/group/sensorforum/message/828  Commenting... Now the research I have done suggests ( see Nasa research on Float tank operations and alpha wave generation) that alpha wave and delta wave