Hello I wish all the members of the group a very happy new year. I also thank the memebers who have responded to my queries regarding making a magnetometer for...
... input ... be ... The HMC1001 is a 850 ohm wheatstone bridge, so each leg should be 850 ohms, not anything else. If you get opens or shorts, check your ...
Hello Thank you very much Mr Mark Amundson. Today I will check the connections as you have suggested. This is the simplest connection to check. I am a...
Thanks Mr Marks for clearification.Do you have some tips / suggestions other than "application notes" for "vehicle detection and classification" application of...
The App Note AN218 is pretty thorough on the subject of vehicle detection using magnetic sensors. The biggest challenge is to acknowledge the local ferrous...
Hello, I just recently joined the yahoo magnetometer group to learn more about how I can get kids involved in electronics, physics , and astronomy. I...
Hi Jim: I have a web page devoted to some sensors that I find interesting, see: http://www.pacificsites.com/~brooke/sensors.shtml Have Fun, Brooke Clarke ...
Hi, I´m trying to build a position system in a room. I´m thinking in tree coils as transmitters and tree smallest ones as receivers. The transmitters have to...
I just recently joined this group, so a big hello and happy new year to you all! I'm working on a home project to use a magnetoresistive sensor to detect a ...
Mark, I have a KMZ10B sensor and the temperature compensating circuit shown in the app notes that go with the device. I think the circuit is also in the files...
I have added to my photo album, a proposed system block diagram for a linear and temperature controlled magnetometer based on the FGM-3 sensor. I have either...
Hello In the message quoted below the magnetic field value is mentioned with seven figure accuracy. What sort of instrumentation/sensor give this accuracy?...
Thank you so much! ... From: magnetometer@yahoogroups.com [mailto:magnetometer@yahoogroups.com]On Behalf Of John Wilcoxen Sent: Monday, January 15, 2007 12:58...
Hi all! Since more and more IC's, especially Opamps are not produced in DIL packages anymore, but instead in SOIC packages, I decided to make some adapter PCB ...
Hannes, This is a good idea, but I would like to make one suggestion. Instead of laying it out as you did, put the op-amp on the bottom side and twist so the...
Hi Charles! ... Thank you for the suggestion! Actually I was pondering over the layout almost over the whole day. Tried several versions, but to reduce cost I...
Hi Hannes: It seems you have way more vias than needed, like all of them. Why not single sided? Any idea of where to get the SIP type pins used on Surfboards? ...
... (snip) Have you considered the additional capacitance this layout adds between the normal dual opamp output pins, and the non inverting input pins?...
Hi Hannes, I'm unclear why you went to a two-sided board. My intent/sketch was a one sided bd where you build the SOIC on the pin side and solder everything...
Hi Hannes: I asked the people that make the Surfboards and they would not tell me their source for the SIP pins. Have Fun, Brooke w/Java http://www.PRC68.com ...
I sometimes use the inexpensive Brown Dog SOIC8-DIP8 adapters: http://cimarrontechnology.com/index.asp?PageAction=VIEWPROD&ProdID=12 Or I make my PCBs so that...
I have a kit that i am putting together....it is the FQS-003 parts kit for the SCL-007 Gradiometer......I have the circuit built and mounted in a Pelican Case...
... In general, there are no low level signals in the FGM-3 connections, unless you are using the internal bias coil. Other than that signal, there is only +5,...
ok , John, thanks very much for the info.....I will be sure and install the Caps on the FGM-3 units and I will use 2 sets of 3 wires as you suggested....thanks...
Hello everyone, My BAA Radio Astronomy Group mentioned a site of German aurora monitors called SAM. I checked out the link and see they are using the FGM-3...
Just curious. I am about to put this kit together, and wonder if anyone has actually done it. No circuit schematic or explanation came with the kit, and the...
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