Patent ID: 8339126

Claim:
A position-measurement device, comprising: a measurement standard including at least one graduation track; a support member including at least one exciter winding to conduct an excitation current to generate an electromagnetic field, and at least one detector system to scan the electromagnetic field; a capacitor, the exciter winding and the capacitor forming an LC oscillation circuit; an evaluation device; and a switch device switchable by the evaluation device; wherein the measurement standard and the support member are movable relative to each other, and in response to a movement of the measuring standard relative to the support member, the electromagnetic field is influenced by the at least one graduation track; wherein the LC oscillation circuit operates by switching via the excitation current of the switch device that induces, in the detector system, at least one voltage that is processed electronically by the evaluation device to ascertain position information; wherein the excitation current is generated by switching of the switch device with switch-on pulses that have an ON time period; and wherein the at least one voltage induced in the detector system is measured in an area after a cut-off edge of the switch-on pulse to ascertain the position information.