Recent content by supro

Very detailed, thanks. I already contacted two companies that manufacture the accelerometers I'm interested in. Both use metallic caps and leads but they have non-magnetic material inside. I asked them if they will produce a special order with non-magnetic caps and I'm waiting for a reply...

I'm basically trying to detect any movement of the subject inside of an MRI magnet during the scan. The idea is to put 1 or more accelerometers under the subject's seat which has another seat underneath, connected by a sensitive spring. The accelerometers will detect the slightest movements...

Thanks, so you think I would be better off with a digital accelerometer because AC current due to non-homogeneous magnetic field (or especially the gradients) will not effect it? The accelerometer data sheet is here: [Google ADXL204.pdf]

I'm not sure if the circuit will work in the magnet. For now the circuit board is basically an evaluation board shown here: [Google 751272583ADXL204EB_0.pdf] I was thinking the capacitors might interfere with the magnetic field. I'm not sure about the accelerometer yet but I'll give the...

I have a circuit board (with chips, resistors, capacitors, etc) that I would like use inside of an MRI magnet (~5 T). Obviously the circuit board itself will cause interference and might not function properly, so I would like to enclose it in a box to prevent any interference. What should I use...