Being an electrical engineer, I'm hoping someone will help me double-check my math. I have a small circuit that I want to power for years that consumes an average 10uA at 3V.
I'd like to power this circuit from a small water turbine with a magnetic coupling that can sustain at most 1 oz-in of torque before slipping.
If the turbine runs 1hr/day at 100rpms (and 1 oz-in of torque), and assuming the generator and regulation circuit run at 100% efficiency, could it power that circuit. I think it's close.