abstract 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 application_number US 42722003 A description the present invention will be described as it applies to its preferred embodiment it is not intended that the present invention be limited to the preferred embodiment it is intended that the invention cover all modifications and alternatives that may be included within the spirit and scope of the invention with reference to fig1 the output driver 10 receives input power 12 from power supply 14 and vsupp 16 and communicates with ground 18 to generate output signal 20 output driver 10 varies the input power 12 in voltage and current such that the output signal 20.