I wonder if it would be possible (and practical) to
use a
microcontroller, perhaps a PIC, to act as a core controller. Use the
A/D and D/A hardware to handle the drive and sense stuff, and do all
the timing in firmware...making it easily tweakable.
Not likely as the sense voltages are quite small and the slice time
has to just right.
That would be something I'd be up for trying...if
I can find a chunk
of core of low enough density to trace the wiring in. There are some
nice low-density planes on eBay right now, but they are priced WAY too
high in my opinion.
No need to trace, they are quite regular, you can ohm them. You still
need core drivers, sense amps and a dozens of diodes for current
steering.
Allison