FIGUERA'S AETHER MAGNETIC FIELDS LINEAR PUMP, REVIVED

[lfarrand]

I've reviewed your design for the MBB scheme and it shouldn't be a problem with the AC MOSFET switches.

I guess you will only have to deal with inductive kickback when switching off the device, since the magnetic field won't collapse if the next switch is closed before the previous switch is opened. You should be able to deal with this easily by placing two diodes across the coil, going into a capacitor (if you want to recover the energy). That said, since the inductive kickback won't be something that is happening frequently, I'd recommend just snubbing it out using a RC snubber. You're unlikely to gain much, you might light an LED for a second if you're lucky!