By using the power of magnetism, I have a way to make the articulating joints in robots very strong and lightweight. Use electromagnets in the joints. I have AC drives that can produce an unlimited amount of power to move robots. Imagine two magnets, try to put the north side to the south side, it is almost impossible. Now imagine that power in an elbow joint or a knee. The power for these AC flux drives comes from re-using the power of the movement itself. No energy is lost.