Giant Magnetoresistive Effect
fgentges at mindspring.com
Sat Jul 3 09:36:01 CDT 2004
I suspect the GMR (giant magnetoresistive) effect may have some simple
applications. It has taken over the hard dirive read head technlology.
The basic concept is better explained by IBM research at:
Commercial sensors are available at Digikey and are made by Nonvolatile
It looks like a fruitful area for experimentation. My initial thought
is to make a tiny little probe to sense current in tiny PC board traces
for testing and diagnostic work. Perhaps a GMR head salvaged from a
defective hard drive could be adapted.
Search on Google for "giant magnetoresistive" for lots of links. I've
listed some of the first and best.
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