10 Nov
2008
10 Nov
'08
10:18 a.m.
On 10 Nov 2008 at 11:54, John Foust wrote:
If each core is magnetized or not, isn't there a
way to measure that
independently of actually applying current to the wires? Today's
(Hall effect?) devices are fairly sensitive, no? You could disassemble
the stack and move a small sensor over each core. Maybe that's
not possible here.
There are all sorts of magnetic sensors (Hall effect, AMR, GMR, SQID,
NMR, etc.). ISTR that EDN had a good article on magnetic sensors a
few months ago. Each type has its advantages and disadvantages.
Cheers,
Chuck