Sauer-Danfoss Inc.

Dennis A Burns

Joseph J Schottler

A current sampling half-bridge output driver capable of driving a wide range of loads using an accurate selection of current sensing resistors. Pluralities of stages are connected in series with the current sensing resistors from each stage connected in series. A range selector selects the stage appropriate for each current load. The reference resistors for a selected stage includes the current sensing resistor associated with that stage added in series to all current sensing resistors electrically connected between the selected stage and the load. The disclosed circuit avoids switching resistors in and out of the circuit and thereby increases the accuracy of the sensing resistor circuit.

Multi-range current sampling half-bridge output driver

A system and method for connectionless sensing of the physical parameters of a shaft that is capable of continuous rotation. The system involving placing a circuit assembly on the rotating shaft, powering the circuit assembly through energy transferred from a stator coil across a gap to a rotor coil, sensing physical parameter data on the shaft and communicating this data across the gap from the rotor coil to a stator coil.

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White Bear Township, MN, United States of America

Dennis A Burns