Abstract: A system includes a primary coil, a first drive circuit, a first sense circuit, and a communication and control circuit for providing power inductively to a portable device that includes a battery and an inductive receiver unit including a receiver coil and a receiver circuit. A portable device includes a battery and a receiver unit capable of receiving inductive power from a compatible inductive charging system including a base unit with a primary coil and associated circuit. A system includes a system rechargeable battery, an inductive coil, a drive circuit, a sense circuit, a communication and control circuit, a receiver rectifier circuit, and a wired power input for providing power inductively to a compatible portable device comprising a battery and an inductive receiver unit including a receiver coil and a receiver circuit.

Abstract: A wireless charging mouse device, a wireless charging mouse, a lower shell of the wireless charging mouse, and a method for producing the lower shell are provided. The wireless charging mouse includes an upper shell, a lower shell, and an electronic module located between the upper shell and the lower shell. The lower shell includes an upper board, a lower board, and a wireless charging assembly located between the upper board and the lower board. A side surface of the upper board is fixed to a side surface of the lower board by gluing or melting. The upper board has a connection hole. The wireless charging assembly includes a circuit board and a wireless charging coil. A connection structure of the circuit board is exposed from the upper board by passing through the connection hole, so as to be electrically coupled to the electronic module.

Abstract: A switch device includes: a receiving conversion component, configured to receive a wireless signal and convert the received wireless signal into a power supply signal; a first power component, connected to the receiving conversion component, and configured to store electrical energy based on the power supply signal; a control component, connected to the first power component, and configured to enter a working state based on the electrical energy supplied by the first power component, and generate a control signal in the working state; and a first switch component, connected to the control component, and configured to change to be in an on or off state according to the control signal, wherein the first switch component is arranged on a power supply loop of a controlled device to which a second power component is configured to supply electrical energy in the on state.

Abstract: A distributed radio frequency (RF) generator for wireless power transfer for wireless power transfer is described. A distributed RF generator can include an electrically-conductive loop having at least a first end and a second end that are adapted to be electrically coupled to one or more direct current (DC) power sources, where the loop comprises a plurality of segments, each of the plurality of segments comprising: a length of wire and at least one active component, wherein the at least one active component has a first terminal and a second terminal that are electrically coupled to the loop, wherein: a DC voltage exists between the first terminal and the second terminal; a DC current flows into the first terminal and out of the second terminal; an oscillating RF voltage is output across the first terminal and the second terminal; and the at least one active component is synchronized in phase.

Abstract: The invention describes a system (100) for transferring electrical power to an electrical load (110), comprising: a direct electrical voltage source (105), and at least one wave generator (145) adapted for converting the direct electric voltage into voltage waves to be transmitted to the electrical load (110); wherein said wave generator (145) comprises at least: an active switch (180) provided with two connection terminals (185, 190) and adapted for being controlled by an electric control signal between a saturation condition, in which it allows the passage of electrical current between said connection terminals (185, 190), and a prevention condition, in which it prevents said passage of electrical current, and a resonant circuit (200) sized to reduce the electrical power applied to said active switch (180) in the moments in which said active switch switches from the saturation condition to the prevention condition and vice-versa; and wherein said resonant circuit (200) comprises at least: a central electric

Abstract: A method of setting phases of a multitude of transmit elements of a phased array includes, in part, setting a phase of a first transmit element to N different values during each of N different time intervals, transmitting an electromagnetic signal from the first transmit element at each of the N time intervals, measuring a power of the electromagnetic signal at a receiving unit during each of the N time intervals, and selecting coefficients of a basis function such that a difference between a power value computed by the basis function and the measured power value associated with each of the N phases is smaller than a threshold value. The threshold value is optionally defined by a minimum of the sum of squares of the difference between a power value computed by the basis function and the power value for each of the N phases.

Abstract: A power transmitter for wireless power transfer includes a control and communications unit, an inverter circuit, a coil, and a shielding. The control and communications unit is configured to provide power control signals to control a power level of a power signal configured for transmission to a power receiver, provide a power request to an external power supply, determine if a power signal at the coil is compliant with the power request, and, if the power signal at the coil is compliant with the power request, continue to operate for wireless power transmission. The coil is configured to transmit the power signal to a power receiver. The shielding comprises a ferrite core.

Abstract: A system is disclosed which includes a chamber, one or more transmitters configured to emit EM radiation, one or more power harvesters, one or more EM stirrer, and a processing system configured to a) receive a measure of dimensional characteristics of the chamber b) control the one or more EM stirrers, c) evaluate statistical properties of the statistical EM environment, d) set a new criterion for acceptable statistical properties of the statistical EM environment, e) measure a lowest usable frequency of the chamber below which the statistical properties are not acceptable according to a predetermined criterion, f) determine an efficiency profile of the one or more power harvesters versus frequency, g) select an operating frequency that maximizes efficiencies of the one or more power harvesters, h) measure a collective efficiency of the chamber, and i) return to step d if the measured collective efficiency is below a predetermined efficiency threshold.

Abstract: Presented is a combo antenna module for preventing shadowing of a short-range communication antenna by forming a loop pattern, for short-range communication, in an inner circumferential region of a wireless power transmission antenna. The presented combo antenna module comprises a radiation pattern for wireless power transmission and a radiation pattern for short-range communication, which are disposed on a base substrate, wherein the transverse paths for entry and exit are made different for the radiation pattern for short-range communication so as to form a loop pattern in the inner area of the radiation pattern for wireless power transmission.

Abstract: A power estimator calculates first estimated power values based on levels of test signals received from power receiver apparatuses, each first estimated power value indicating estimated received power of a corresponding power receiver apparatus when a power transmitter apparatus transmits power to the power receiver apparatuses. A signal transmitting circuit transmits each first estimated power value to a corresponding power receiver apparatus. A signal receiving circuit receives second estimated power values from the power receiver apparatuses, each second estimated power value indicating estimated received power of a corresponding power receiver apparatus when other power transmitter apparatuses transmit power to the power receiver apparatuses.

Abstract: A power transmitter for wireless power transfer includes a verification load, a control and communications unit, an inverter circuit, a coil, and a shielding. The control and communications unit is configured to provide power control signals to control a power level of a power signal configured for transmission to a power receiver, provide a power request to an external power supply, determine if a power signal at the verification load is compliant with the power request, and, if the power signal at the verification load is compliant with the power request, continue to operate for wireless power transmission. The coil is configured to transmit the power signal to a power receiver. The shielding comprises a ferrite core.

Abstract: An intermediate device for supporting a power transfer to an electromagnetic load (505) from a power transmitter (201) providing a power transfer electromagnetic signal comprises a resonance circuit (507) that includes a coil (701) and a capacitor (703). The coil (701) is arranged to electromagnetically couple to the power transmitter (201) and to the electromagnetic load (505) such that energy of the power transfer electromagnetic signal from the power transmitter (201) is concentrated towards the electromagnetic load (505). A hollow support structure (1001) has a laterally positioned air inlet (1205) and a centrally positioned air outlet (1207). The coil (701) is mounted on the hollow support structure (1001) and disposed around the central air outlet (1207). The device further comprises an air flow generator (901) for creating a flow of air into the air inlet (1205).

Abstract: Systems and methods for utilizing a small form-factor, wirelessly powered transceiver are disclosed. In one embodiment, a wireless powered transceiver includes a receive antenna configured to receive a receive signal, a transmit antenna configured to transmit a transmit signal, a power harvesting system including a rectifier circuit configured convert radio frequency energy from the receive signal into DC (direct current) voltage, and a power management unit (PMU) configured to set the operating mode and biasing condition of the receive and transmit circuitry blocks and provide DC voltage from the receive circuitry block to the transmit circuitry block to maintain a minimum voltage, a receiver circuitry block configured to provide energy from the receive signal to the power harvesting system, and a transmitter circuitry block including a data modulator circuit, the data modulator circuit configured to generate the transmit signal using DC voltage received from the power management unit.

Abstract: A power transmitting device transmits power to a power receiving device having a power receiving coil in water. The power transmitting device includes a power transmitting coil configured to transmit the power to the power receiving coil via a magnetic field. The power transmitting device also includes a support member that supports the power transmitting coil, and one or more spacers that hold the transmitting coil and the support member.

Abstract: A fuel dispenser includes a power distribution system having an alternating current (AC) power supply and an AC to direct current (DC) power converter configured to convert a portion of the AC power to DC power for one or more DC peripheral components associated with the fuel dispenser. The power distribution system also includes processing circuitry configured to power down at least one of the DC peripheral components in response to an actuator, cause an indicator to be activated indicating that the DC peripheral components are de-energized and the AC power supply is active, power up the at least one direct current peripheral component in response to the actuator when the direct current peripherals are de-energized, and cause the indicator to be activated to indicate that both the DC peripheral components and the AC power supply are active.

Abstract: A medical electrical equipment power tap has multiple sockets and a power cord with a maximum current rating. The power tap includes a display to indicate information related to an instantaneous current draw of the power tap. The power tap also includes an electrical circuit which determines whether the instantaneous current draw exceeds a predetermined maximum allowed current which is less than the maximum current rating. The display provides a visual indication when the power tap's current draw exceeds the maximum allowed value, signifying that at least one item of medical electrical equipment should be unplugged from the power tap. The electrical circuit includes a current loop which passes through a structural portion of the power tap's housing for independently gauging the instantaneous current draw using a clamp probe.

Abstract: A non-contact power transmission device is configured with which a primary circuit that supplies power and a secondary circuit that supplies the power supplied from the primary circuit to a load are coupled via a transformer, the non-contact power transmission device capable of connecting a storage battery and an application using the primary circuit and the secondary circuit.

Abstract: Various embodiments of the present invention include systems and methods for generating and conserving power for illuminating a space including obtaining energy producing equipment further including a racking system, a direct current to alternating current inverter, a solar module, a light source and connecting the solar module to the racking system, connecting the direct current to alternating current inverter to the solar module, connecting the light source to the solar module through the direct current to alternating current inverter, receiving from the solar module by the inverter a direct current and converting it to alternating current, and causing by the alternating current the light source to visually illuminate the space.

Abstract: Provided is a method of a wireless power transmitter, including transmitting a detection power, detecting a variation of a load impedance, the variation being greater than a predetermined value, receiving a first signal including an identifier and a load characteristic of the wireless power receiver, the load characteristic including load information indicating the variation of the load impedance, transmitting a first response to form a communication connection with a wireless power receiver in response to the first signal, receiving a second signal including required power information of the wireless power receiver, determining whether power is available to the wireless power receiver based on the required power information, and transmitting a second response including permission information indicating a standby mode or a charging mode based on a result of the determining.

Abstract: The embodiments described herein comprise a distributed wireless power transmission system including a plurality of wireless power transmission systems (WPTSs) coordinating transmissions to create a virtual WPTS. The plurality of WPTS coordinate amongst each other to compensate for local phase shift differences between respective clock sources so that transmissions from the WPTSs constructively interfere at a wireless power receiver client (WPRC).