Abstract: A method of testing an impedance-sensitive system with a switching device, wherein the method comprises: switching the disconnecting device into the on-state configured to permit transmission of energy via the coil; implementing a first measurement with the impedance-sensitive system; switching the disconnecting device into the off-state configured to permit damping of the external positioning signal that couples into the coil so as to reduce the undesirable oscillations of the coil; implementing a second measurement with the impedance-sensitive system; performing a comparison of the first measurement and the second measurement; performing a verification of the comparison with a target specification; and displaying a correct function and/or a malfunction depending on the verification.

Abstract: A signal matching apparatus for an evaluation circuit for evaluating an electromagnetic signal for operation in an inductive energy transmission system, the apparatus including a signal transmission device, wherein the signal transmission device includes an antenna connection for connecting a receiving antenna, an evaluation connection for connecting the evaluation circuit for the electromagnetic signal, wherein the antenna connection is configured to receive the electromagnetic signal, wherein the signal transmission device is configured to leave the phase of the electromagnetic signal substantially unchanged and wherein the signal transmission device is configured to match the amplitude of the electromagnetic signal to a characteristic prescribable by the evaluation circuit, wherein the evaluation connection is configured to provide the electromagnetic signal to the evaluation circuit.

Abstract: A method of testing an impedance-sensitive system with a switching device, wherein the method comprises: switching the disconnecting device into the on-state configured to permit transmission of energy via the coil; implementing a first measurement with the impedance-sensitive system; switching the disconnecting device into the off-state configured to permit damping of the external positioning signal that couples into the coil so as to reduce the undesirable oscillations of the coil; implementing a second measurement with the impedance-sensitive system; performing a comparison of the first measurement and the second measurement; performing a verification of the comparison with a target specification; and displaying a correct function and/or a malfunction depending on the verification.

Abstract: A switching device for a coil is specified, having an input connection, for connection to a coil electronics system and/or to a resonant circuit capacitor, an output connection, for connection to an end of the coil and/or to a resonant circuit capacitor, and a disconnecting device, wherein the disconnecting device is able to be switched between an on-state and an off-state, the disconnecting device connects the input connection and the output connection to an on-impedance in the on-state, and the disconnecting device connects the input connection and the output connection to an off-impedance in the off-state, the off-impedance has an increased value compared to the on-impedance, the off-impedance permits a flow of current between the input connection and the output connection, and the off-impedance is formed so as to damp at least one external signal of a definable frequency, the external signal being coupled into the coil.

Abstract: A method for controlling a multiphase DC-DC converter with two or more phase circuits, each with a switch arranged to control an inductor current through an inductor, the phase circuit is arranged to generate a phase current contributing to a total current to be delivered to an output side of the multiphase DC-DC converter. The method includes switching two or more of the phase circuits in Boundary Conduction Mode to generate interleaved phase current pulses, with a period length and a nominal turn-on time period of the switch; and, in at least one of the two or more of the phase circuits being switched, and for successive phases, repeatedly adapting the turn-on time period for controlling the length of the pulses of the inductor current to minimise a difference from the period length.

Abstract: A switching device for a coil is specified, having an input connection, for connection to a coil electronics system and/or to a resonant circuit capacitor, an output connection, for connection to an end of the coil and/or to a resonant circuit capacitor, and a disconnecting device, wherein the disconnecting device is able to be switched between an on-state and an off-state, the disconnecting device connects the input connection and the output connection to an on-impedance in the on-state, and the disconnecting device connects the input connection and the output connection to an off-impedance in the off-state, the off-impedance has an increased value compared to the on-impedance, the off-impedance permits a flow of current between the input connection and the output connection, and the off-impedance is formed so as to damp at least one external signal of a definable frequency, the external signal being coupled into the coil.

Abstract: A signal matching apparatus for an evaluation circuit for evaluating an electromagnetic signal for operation in an inductive energy transmission system, the apparatus including a signal transmission device, wherein the signal transmission device includes an antenna connection for connecting a receiving antenna, an evaluation connection for connecting the evaluation circuit for the electromagnetic signal, wherein the antenna connection is configured to receive the electromagnetic signal, wherein the signal transmission device is configured to leave the phase of the electromagnetic signal substantially unchanged and wherein the signal transmission device is configured to match the amplitude of the electromagnetic signal to a characteristic prescribable by the evaluation circuit, wherein the evaluation connection is configured to provide the electromagnetic signal to the evaluation circuit.