1465 results about "Receiver coil" patented technology

An inductive power systems transfers energy by inductively coupling a source coil on a power source to a receiver coil on a power portion of a power adapter. The source current is received in the power adapter and converted to direct current for transmission to a computer system. Wireless communication between a power source and the power adapter is provided. A wireless communication arrangement provides for authentication of devices that are allowed by a source to be powered.

An inductive charging system transfers energy by inductively coupling a source coil on a power source to a receiver coil for a battery charger. Source current may be received in the battery charger and converted for charging a battery pack. A wireless communication arrangement may also provide for authentication of devices that are allowed by the source to be powered or otherwise charged.

An inductive charging systems transfers energy by inductively coupling a source coil on a charging source to a receiver coil on a charging portion of a battery pack. The source current is received in the battery pack and converted to direct current for storage in the battery pack cells. Communication between a charging source and the charging portion is provided. A wireless communication arrangement provides for authentication of devices that are allowed by a source to be charged.

The present invention provides an electromagnetic tracking system that includes a field generator and a field sensor arranged to generate and detect, respectively, an electromagnetic field. Both the transmitter and receiver coils are connected to signal conditioning and processing circuitry to provide outputs indicative of the coil signals. A processor operates on the signals to determine the coordinates of the sensing assembly relative to the generator assembly. The signal processor produces ratiometric outputs, and applies a mutual inductance model to solve for position / orientation coordinates. In some embodiments, a disturber in the form of a conductive ring or a sheath is disposed about an interfering piece of equipment to moderate and standardize disturbances due to eddy currents.

An improved induction tool for formation resistivity evaluations. The tool provides electromagnetic transmitters and sensors suitable for transmitting and receiving magnetic fields in radial directions that are orthogonal to the tool's longitudinal axis with minimal susceptibility to errors associated with parasitic eddy currents induced in the metal components surrounding the transmitter and receiver coils. Various transmitter receiver combinations are provided to select sensitivity to a desired reservoir formation properties, for example, different orientations xy, xz, yz, 20-40, 20-90, and combinations, such as, Symmetric-symmetric; Asymmetric-symmetric; and Asymmetric-asymmetric. Measurements made with a multi-component logging instrument when used in a substantially horizontal, vertical or deviated borehole in earth formations are diagnostic of the direction of resistive beds relative to the position of the borehole.

An assembly for wireless energy communication to an implanted device comprises an external belt (7) accommodating a wearer control (1) followed by controller (2), a battery pack (4), an inverter (3), a transmission coil (8) connected in parallel by a plurality of capacitors, and an infrared transceiver 9. Provided furthermore is an implanted device comprising a receiver coil (11) having the same dimensions as the transmission coil (8), a rectifier following said receiver coil (11), an infrared transceiver (10) followed by a controller and an sensor assembly (17) assigned thereto as well as a battery pack (16) for powering said implanted device via an energy manager (14).