An electronic control device for controlling at least one rotatably arranged actuator includes electronic components, such as a device for the contact-free reception of electrical energy and the contact-free reception of signals, a device for generating magnetic fields, and a common housing that encloses the electronic components and assimilates them. The control device is rotatable and designed for attaching on or into a component rotating around a rotational axis.

Embodiments discussed herein refer to electric vehicle charging ports having integrated contactless communication units (CCUs). The electric vehicle charging ports include male and female connector assemblies that can be coupled together in a manner that enables consistent and reliable operation of contactless communications and power transfer. The connector integrates power and alignment such that when two connector assemblies are coupled together, power connections are made in combination with establishing contactless communications links between counterpart CCUs in both connector assemblies. The fixed alignment of the connector assemblies ensures that contactless communication channels, spanning between the connector assemblies, are aligned to enable consistent and reliable operation of contactless communications. The CCUs, which conduct contactless communications, may be integrated in the connector assemblies at fixed positions that enable CCUs of one connector assembly to be aligned with CCUs of another connector assembly when they are coupled together.

A modular electromagnetic navigation system with reconfigurable magnetic field generating antennas provides improved means for tracking various magnetic wired or wireless sensors with multiple biomedical and industrial applications. Electromagnetic field generating antennas (pods) can be implemented as multilayered printed circuit boards (PCB) with different layers being sufficiently aligned and connected in series for increased magnetic field strength. The pods can be kept separate or implemented on the same PCB as pod assemblies (pads) consisting of spaced apart pods. Different pods and pads can be placed on a side of or around the desired navigation volume allowing creation of arbitrary navigation spaces. Individual pods can also be used as magnetic field sensors or integrated with additional magnetic field sensors allowing localization of the pods in the system to adjust the navigation volume in real time.

An annular block of polymer comprising an inductive coupler assembly configured to fit within a groove in the shoulder of a drill pipe joint. The assembly comprises a ferrite channel arranged around the interior of the block. At least one turn of a conductive wire is deposed within the channel. The block comprises a bumper comprising jutting from the block. The block comprises internal void openings adjacent its vertical side surfaces. A void opening is disposed proximate the bumper. The block further comprises an internal gasket partially extending from the bottom surface of the block. The external portion of the gasket being formed to fit within a gasket seat in the bottom of the groove. The wire passes through the gasket as it exits the block. When the block is installed into the groove, the gasket seals the wire and the block's components from the downhole environment.

An electromagnetic induction wireless transceiver including: a magnetic antenna; and a signal source configured to produce a communication signal used to drive the magnetic antenna to produce electromagnetic induction fields, wherein the transceiver when connected to a first location on a body is configured to communicate with another electromagnetic induction wireless transceiver connected to a second location on the body.

Assemblies and systems for contactless power and/or data transfer. The power transfer system includes at least a pair of opposing magnetic cores, each core having an L-shaped cross section. The data transfer system includes at least a pair of opposing stripline and/or microstrip conductors. Components for the power and/or data transfer system are preferably supported by a supporting surface in the rotor and/or stator. In some embodiments, the power and/or data transfer system is provided in a rotor flange and/or a stator flange for modularity.

The present invention relates to an electrical device comprising: a first connector (102) being magnetically connectable to a second connector (202) of an accessory (200) for forming a magnetic connection between the first and second connectors, wherein at least one of the first and second connectors comprises an electromagnet; a sensor (120) comprising at least one of a motion sensor, a proximity sensor and a microphone, wherein the sensor is arranged to output a sensor signal (121); and a electromagnetic controller (108) connected to the electromagnet and arranged to control the magnetic field of the electromagnet based on the sensor signal.

An antenna system is provided that is capable of transmitting and receiving using near-field magnetic induction (NFMI). The antenna system includes a non-magnetic metallic core, a ferrite shield, and at least one electrically conducting winding. The ferrite shield is positioned between the non-magnetic metallic core and the electrically conducting winding. The non-magnetic metallic core may be a battery. The ferrite material forms a low impedance path for the magnetic field lines and increases inductance, thus providing increased energy efficiency and transmission quality. The antenna system is suitable for use in space constrained battery powered devices, such as hear instruments including hearing aids and earbuds.

A structure comprises a plurality of first turns of a coil and a plurality of second turns of the coil having a similar shape as the plurality of first turns of the coil, wherein the plurality of first turns of the coil and the plurality of second turns of the coil have a similar center position and a current flowing through the plurality of first turns of the coil and a current flowing through the plurality of second turns of the coil are in opposite directions.

The disclosed couplers operate in a “near field” mode, meaning energy, whether used to transmit data or power, is transferred through magnetic induction using a ∂i/∂t circuit (meaning a change in current over a change in time), such as by using inductive transmission and receive coils in which resistors and/or other components such as diodes are placed into series and/or in parallel with the coils and used to control the shape of the pulse, e.g. its voltage and/or frequency. In embodiments, the connectors are use to couple a power source to a power receptor.