Hi Travis, Your drawing looks excellent to me....it totally conveys the communication of the item description...the most important aspect. You must be a computer artist? I'am sure the approach has been checked on before in the PSN past emails. I've not heard of much success or satisfaction in that kind of physical adoption....the coil preferably needs more wire wraps than it has.....the more wire....the more the signal it can generate, to the amplifier and etc. It was nice to hear though, of someone doing some experimenting with available materials. Another item that "might" yield a coil, is perhaps some of these rechargeable items like toothbrushes etc. Adopting any particular coil to a magnet that will accomodate it is also sometimes kind of a challenge.....let alone all the other parts of a home brew seismo.....but it can be fun to try. Take care, Meredith Lamb Travis Farmer wrote: > On my Lehman sensor I have been using a homemade coil that provided moderate > output. I seem to have stumbled across something that works even better. > >From an old (dead) hard drive, I pulled the head positioning component and > gave it a try. I drew up a (bad) picture of the piece I am talking about. It > can be viewed at http://home.midmaine.com/~cgf/graphics/hd_sensor.jpg . > I rigged up a linkage to the seismo and gave it a slow 1"/sec swing. I got > an output of 0.026 V. the coil has a DC resistance of 18.1 Ohms. > > Anybody else tried a setup like this? > > -Travis > __________________________________________________________ Public Seismic Network Mailing List (PSN-L)
Larry Cochrane <cochrane@..............>