We can assume around 6 Kohm resistance per coil.
There is no fixed network layout, I want to be able to play around, selecting series/parallel, in phase/out of phase, for all pairs of coils. Yes, that means a big network if it were to be fully deployed, but at first at least I may reduce the complexity.
Output voltage is on the order of +:- 0.125V.
The on-resistance should be as low as possible, like a normal mechanical switch.
I have no way of judging what is the best, or even a good starting point, so I will just take all advice and try it out!
Thanks to everyone - more advice is always welcome!
Ciao,
Bob