3 ms·
As I read that, I was wondering if modern MEMS compasses are sensitive enough to read the magnetisation orientation of those ferrite cores? Could you non-destru
by bigiain 7y ago
As I read that, I was wondering if modern MEMS compasses are sensitive enough to read the magnetisation orientation of those ferrite cores? Could you non-destructively read the memory out of that one core at a time using cheap quadcopter components?
- kens 7y agoIt would be cool to read the magnetic field of the cores directly. The first problem is you'd essentially destroy the core stack disassembling it to get at the planes and expose the cores. The second problem is the cores are sub-millimeter sized, so you'd need a fairly high resolution probe. I think a typical Hall effect sensor would be too big, and a magnetic-force microscopy probe would be too small. But if anyone knows of a probe that work work, please let me know.
- bigiain 7y agoAhhh, right. I hadn't read the photo credits on those pics of the core planes. I see now that they are not the ones out of the assembled one you got to examine... I hadn't worked out just how small everything was. Thanks for the response!