A power transmitter for transferring power to a power receiver using an inductive power signal, wherein the power transmitter comprises: a first inductor for providing via the first inductor an inductive power signal to the power receiver; a second inductor for receiving data signals from the power receiver, a capacitor in a series coupling with the second inductor; wherein the first and second inductors are separate inductors in a power transfer circuit and a data signal receiving circuit, wherein the data signal receiving circuit comprises a data extracting circuit for extracting the data signals received by the second inductor and a driver (1001, 1003) for generating a drive signal for the series coupling of the second inductor and the capacitor during a drive time interval including the communication period, the power transmitter comprising a control unit for controlling the power signal supplied via the first inductor to the power receiver in dependence on the data signals received and the power transmitter is arranged to transfer power via the first inductor during power transfer periods of a repeating time frame and receive data signal via the second inductor during communication periods of a repeating time frame, a power of the inductive power signal being reduced for the communication period relative to the power transfer period, wherein a control circuit (401, 1013, 1019) is arranged for application of a controlled electrical coupling of the data extraction circuit to the second inductor during a communication period and electrical decoupling of the data extraction circuit from the second inductor during at least a part of power transfer periods; characterized in that the data signal receiving circuit further comprises a discharge circuit for discharging the capacitor during a discharge time interval of the time frame at least partially preceding the communication period. a first inductor for providing via the first inductor an inductive power signal to the power receiver; a second inductor for receiving data signals from the power receiver, a capacitor in a series coupling with the second inductor; wherein the first and second inductors are separate inductors in a power transfer circuit and a data signal receiving circuit, wherein the data signal receiving circuit comprises a data extracting circuit for extracting the data signals received by the second inductor and a driver (1001, 1003) for generating a drive signal for the series coupling of the second inductor and the capacitor during a drive time interval including the communication period, the power transmitter comprising a control unit for controlling the power signal supplied via the first inductor to the power receiver in dependence on the data signals received and the power transmitter is arranged to transfer power via the first inductor during power transfer periods of a repeating time frame and receive data signal via the second inductor during communication periods of a repeating time frame, a power of the inductive power signal being reduced for the communication period relative to the power transfer period, wherein a control circuit (401, 1013, 1019) is arranged for application of a controlled electrical coupling of the data extraction circuit to the second inductor during a communication period and electrical decoupling of the data extraction circuit from the second inductor during at least a part of power transfer periods; characterized in that the data signal receiving circuit further comprises a discharge circuit for discharging the capacitor during a discharge time interval of the time frame at least partially preceding the communication period.