A power transfer unit configured to transfer power using magnetic fields, and a foreign object remover configured to remove a foreign object in the vicinity of a power transfer path when the power is transferred.

A wireless charging apparatus includes a transmitter, and first receiver, and a second receiver. The transmitter wirelessly transmits first power from a charger. The first receiver amplifies first current corresponding to the first power to second current. The second receiver wirelessly receives second power corresponding to the second current. The second power charges a battery of an electronic device, and the first and second receivers are coupled to the electronic device.

A wireless charging apparatus includes a transmitter, and first receiver, and a second receiver. The transmitter wirelessly transmits first power from a charger. The first receiver amplifies first current corresponding to the first power to second current. The second receiver wirelessly receives second power corresponding to the second current. The second power charges a battery of an electronic device, and the first and second receivers are coupled to the electronic device.

A homecage system for facilitating an experiment using an animal includes a cage unit configured to hold the animal therein. A misalignment insensitive transmitting resonant wireless power transfer unit encompasses the cage unit. The transmitting resonant wireless power transfer unit is configured to be driven by an external power signal so as to generate a radio frequency wireless power transfer signal. A headstage unit is configured to be physically coupled to the animal and is responsive to the wireless power transfer signal. The headstage unit transmits data wirelessly from a sensor associated with the animal. A control unit is in data communication with the headstage unit and controls the external power signal. A remote unit is in data communication with the control unit. The remote unit transmits control information thereto and that communicates data via a local area network.

A case for storing a mobile computing device and a wireless earbud includes a back panel; a front panel defining a viewing aperture which extends through the front panel; a plurality of sidewalls extending around a perimeter of the back panel and configured to couple the perimeter of the back panel to a perimeter portion of the front panel; a dividing layer between the front panel and the back panel, such that the front panel and the dividing layer together define a first housing configured to receive and restrain a mobile computing device, and the dividing layer and the back panel together define a second housing; and a wireless earbud charging contact disposed within the second housing and configured to contact and charge the wireless earbud when the wireless earbud is positioned in the case.

A magnetic resonance wireless power transfer method according to an aspect of the present invention includes transmitting power from a source coil to the Tx resonant coil using a magnetic induction method, transmitting the power from the Tx resonant coil to an Rx resonant coil, having a resonant frequency identical with that of the Tx resonant coil, via magnetically-coupled resonance, and transmitting the power from the Rx resonant coil to the device coil of an electronic device using the magnetic induction method. The Tx resonant coil and the Rx resonant coil are arranged at a right angle or a specific angle of inclination relative to each other.

A magnetic resonance wireless power transfer method according to an aspect of the present invention includes transmitting power from a source coil to the Tx resonant coil using a magnetic induction method, transmitting the power from the Tx resonant coil to an Rx resonant coil, having a resonant frequency identical with that of the Tx resonant coil, via magnetically-coupled resonance, and transmitting the power from the Rx resonant coil to the device coil of an electronic device using the magnetic induction method. The Tx resonant coil and the Rx resonant coil are arranged at a right angle or a specific angle of inclination relative to each other.

Described herein are improved configurations for a wireless power transfer. The parameters of components of the wireless energy transfer system are adjusted to control the power delivered to the load at the device. The power output of the source amplifier is controlled to maintain a substantially 50% duty cycle at the rectifier of the device.

This invention is related to a novel method and apparatus that provides selective and enhanced power flow in wireless power transfer systems with multiple receivers. Auxiliary circuits are introduced in the receiver circuits (and relay circuits if applicable) so as to ensure proper frequency-selective wireless power flow to the appropriate targeted receivers, with the pickup power by the non-targeted receivers substantially reduced even if the chosen tuned frequencies for different receivers are not widely apart.

This invention is related to a novel method and apparatus that provides selective and enhanced power flow in wireless power transfer systems with multiple receivers. Auxiliary circuits are introduced in the receiver circuits (and relay circuits if applicable) so as to ensure proper frequency-selective wireless power flow to the appropriate targeted receivers, with the pickup power by the non-targeted receivers substantially reduced even if the chosen tuned frequencies for different receivers are not widely apart.