A system for redundant valve positioning, comprising: a mechanical valve positioner connected to a turbine valve to open and close the turbine valve, the mechanical valve positioner comprising a first coil and a second coil to sense movement of the mechanical valve positioner; a first valve positioner comprising a first drive circuit (20A, 22A) and a second drive circuit (20B, 22B), the first drive circuit (20A, 22A) comprising a first driver (24, 26) and a first switch, and the second drive circuit (20B, 22B) comprising a second driver (24, 26) and a second switch, the first drive circuit (20A, 22A) being in communication the first coil and the second drive circuit (20B, 22B) being in communication with the second coil; a second valve positioner comprising a third drive circuit (20A, 22A) and a fourth drive circuit (20B, 22B), the third drive circuit (20A, 22A) comprising a third driver (24, 26) and a third switch, and the fourth drive circuit (20B, 22B) comprising a fourth driver (24, 26) and a fourth switch, the third drive circuit (20A, 22A) being in communication the first coil and the fourth drive circuit (20B, 22B) being in communication with the second coil; wherein only one of the first switch and the third switch is closed at a time, the first driver (24, 26) and the third driver (24, 26) thereby being alternately connected to the first coil at different times such that the first driver (24, 26) and the third driver (24, 26) do not drive the first coil at a same time; wherein only one of the second switch and the fourth switch is closed at a time, the second driver (24, 26) and the fourth driver (24, 26) thereby being alternately connected to the second coil at different times such that the second driver (24, 26) and the fourth driver (24, 26) do not drive the second coil at a same time; wherein the first coil and the second coil are redundant position sensing coils; and wherein the first coil and the second coil are each a primary coil in a respective first linear variable differential transformer, LVDT, and a second LVDT, the first LVDT and the second LVDT being redundant LVDTs. a mechanical valve positioner connected to a turbine valve to open and close the turbine valve, the mechanical valve positioner comprising a first coil and a second coil to sense movement of the mechanical valve positioner; a first valve positioner comprising a first drive circuit (20A, 22A) and a second drive circuit (20B, 22B), the first drive circuit (20A, 22A) comprising a first driver (24, 26) and a first switch, and the second drive circuit (20B, 22B) comprising a second driver (24, 26) and a second switch, the first drive circuit (20A, 22A) being in communication the first coil and the second drive circuit (20B, 22B) being in communication with the second coil; a second valve positioner comprising a third drive circuit (20A, 22A) and a fourth drive circuit (20B, 22B), the third drive circuit (20A, 22A) comprising a third driver (24, 26) and a third switch, and the fourth drive circuit (20B, 22B) comprising a fourth driver (24, 26) and a fourth switch, the third drive circuit (20A, 22A) being in communication the first coil and the fourth drive circuit (20B, 22B) being in communication with the second coil; wherein only one of the first switch and the third switch is closed at a time, the first driver (24, 26) and the third driver (24, 26) thereby being alternately connected to the first coil at different times such that the first driver (24, 26) and the third driver (24, 26) do not drive the first coil at a same time; wherein only one of the second switch and the fourth switch is closed at a time, the second driver (24, 26) and the fourth driver (24, 26) thereby being alternately connected to the second coil at different times such that the second driver (24, 26) and the fourth driver (24, 26) do not drive the second coil at a same time; wherein the first coil and the second coil are redundant position sensing coils; and wherein the first coil and the second coil are each a primary coil in a respective first linear variable differential transformer, LVDT, and a second LVDT, the first LVDT and the second LVDT being redundant LVDTs.