Abstract: A wirelessly locatable tag may include a first housing member defining a first exterior surface of the wirelessly locatable tag and an interior surface opposite the first exterior surface. The wirelessly locatable tag may further include a second housing member defining a second exterior surface of the wirelessly locatable tag a first antenna configured transmit the wireless signal using a first wireless protocol, a second antenna configured to communicate using a second wireless protocol different than the first wireless protocol, and an audio system. The audio system may include a magnet assembly configured to produce a magnetic field and a coil positioned within the magnetic field and coupled to the interior surface of the first housing member, the coil configured to interact with the magnetic field to impart a force on the first housing member, thereby moving a portion of the first housing member to produce an audible output.

Abstract: A wireless power transmitting device includes a surface adapted to support a container containing a wireless power receiving device and further includes a wireless power transfer coil positioned to couple with a wireless power receiving coil of the wireless power receiving device when the container is placed on the surface. The wireless power transmitting device detects a presence of the wireless power receiving device when the container containing the wireless power receiving device is placed on the surface and determines whether the wireless power receiving device permits wireless power transfer while it is inside the container. Using the wireless power transfer coil, the wireless power transmitting device wirelessly transmits power to the wireless power receiving device through the container to charge a battery of the wireless power receiving device, in accordance with determining the wireless power receiving device permits wireless power transfer while it is inside the container.

Abstract: A fluid delivery module includes a housing defining a fluid flow path between an inlet and an outlet. The housing includes a top surface portion and a bottom surface portion that are movable to vary a flow direction of a fluid flow along the fluid flow path. The fluid delivery module includes an outlet treatment movable to vary a flow rate of the fluid flow exiting the outlet and a control unit configured to send commands to move at least one of the top surface portion, the bottom surface portion, or the outlet treatment according to a fluid delivery profile that dictates a flow pattern of the fluid flow.

Abstract: A wireless power system may use a wireless power transmitting device to transmit wireless power to a wireless power receiving device. The wireless power transmitting device may transmit wireless power at a wireless power transmission frequency. Wireless power signals at the wireless power transmission frequency can create interference with a sensitive electrical component in the wireless power receiving device when the wireless power transmission frequency lies in a sensitive frequency band associated with the component. Measurement circuitry in the wireless power receiving device can measure the wireless power transmission frequency. In response to determining that the wireless power transmission frequency lies in a sensitive frequency band, the wireless power receiving device may send an in-band wireless power level adjustment request to the wireless power transmitting device. The request causes a frequency adjustment that moves the wireless power transmission frequency out of the sensitive band.

Abstract: An electronic device can include a battery bus, a load having a transient power requirement, and a transient power management circuit coupled between the battery bus and the load and configured to meet the transient instantaneous power requirement of the load while maintaining a minimum voltage on the battery bus. The transient power management circuit can include a boost converter coupled between the battery bus and a capacitor bank, and the load may be coupled to the capacitor bank. A control circuit may be configured to operate the boost converter to charge the capacitor bank. A control switch may be coupled between the boost converter and the capacitor bank, and the control circuit may be further configured to limit inrush current into the capacitor bank. Additionally, a state of charge of the battery may be estimated from a time required to charge the capacitor bank.

Abstract: A wirelessly locatable tag may include a first housing member defining a first exterior surface of the tag, a second housing member removably coupled to the first housing member and defining a second exterior surface of the tag, and an antenna assembly. The antenna assembly may include an antenna frame defining a top surface and a peripheral side surface, a first antenna on the antenna frame along the peripheral side surface and configured to communicate with the electronic device using a first wireless protocol, a second antenna on the antenna frame along the peripheral side surface and configured to send a localization signal to the electronic device using a second wireless protocol different than the first protocol, and a third antenna on the antenna frame along the top surface and configured to communicate with the electronic device via a third wireless protocol different than the first and second protocols.

Abstract: A wirelessly locatable tag may include a first housing member defining an exterior surface of the wirelessly locatable tag and a frame member attached to the first housing member and defining a battery cavity configured to receive a button cell battery and an opening through the frame member. The wirelessly locatable tag may further include a circuit board positioned between the first housing member and the frame member, a battery connector coupled to the circuit board and comprising a deflectable arm extending into the battery cavity through the opening in the frame member, a second housing member removably coupled to the frame member, and a biasing member configured to bias the button cell battery into the battery cavity of the frame member and against the deflectable arm of the battery connector.

Abstract: A wirelessly locatable tag may include a first housing member defining a first exterior surface of the wirelessly locatable tag and an interior surface opposite the first exterior surface. The wirelessly locatable tag may further include a second housing member defining a second exterior surface of the wirelessly locatable tag a first antenna configured transmit the wireless signal using a first wireless protocol, a second antenna configured to communicate using a second wireless protocol different than the first wireless protocol, and an audio system. The audio system may include a magnet assembly configured to produce a magnetic field and a coil positioned within the magnetic field and coupled to the interior surface of the first housing member, the coil configured to interact with the magnetic field to impart a force on the first housing member, thereby moving a portion of the first housing member to produce an audible output.

Abstract: An electronic device can include a battery bus, a load having a transient power requirement, and a transient power management circuit coupled between the battery bus and the load and configured to meet the transient instantaneous power requirement of the load while maintaining a minimum voltage on the battery bus. The transient power management circuit can include a boost converter coupled between the battery bus and a capacitor bank, and the load may be coupled to the capacitor bank. A control circuit may be configured to operate the boost converter to charge the capacitor bank. A control switch may be coupled between the boost converter and the capacitor bank, and the control circuit may be further configured to limit inrush current into the capacitor bank. Additionally, a state of charge of the battery may be estimated from a time required to charge the capacitor bank.

Abstract: A climate control system includes a fluid delivery module. The fluid delivery module includes a housing defining a fluid flow path between an inlet and an outlet with the outlet having an elongated, slit-like shape and is not visible within a sight line of a user. The fluid delivery module further includes a fluidic control device disposed within the housing between the inlet and the outlet and movable to vary a direction of the fluid flow path within the housing.

Abstract: A wireless power system may use a wireless power transmitting device to transmit wireless power to a wireless power receiving device. The wireless power transmitting device may transmit wireless power at a wireless power transmission frequency. Wireless power signals at the wireless power transmission frequency can create interference with a sensitive electrical component in the wireless power receiving device when the wireless power transmission frequency lies in a sensitive frequency band associated with the component. Measurement circuitry in the wireless power receiving device can measure the wireless power transmission frequency. In response to determining that the wireless power transmission frequency lies in a sensitive frequency band, the wireless power receiving device may send an in-band wireless power level adjustment request to the wireless power transmitting device. The request causes a frequency adjustment that moves the wireless power transmission frequency out of the sensitive band.

Abstract: A wireless power receiving device may have wireless power receiving circuitry with a coil and rectifier. The wireless power receiving circuitry receives wireless power signals and uses the rectifier to supply a corresponding output. The output is characterized by a current, a voltage, and a power equal to a product of the current and voltage. The output of the rectifier is supplied to a direct-current-to-direct-current power regulator integrated circuit, which supplies direct-current power to a system load and battery. A controller integrated circuit directs the power regulator circuit to dither the current while monitoring for a peak in the power. If the power regulator circuit dithers the current satisfactorily, the wireless power receiving circuitry may be operated at the peak power. If the power regulator circuitry does not dither the current in response to being directed to dither the current, a wireless power transmission level may be reduced.

Abstract: An electronic device comprising a connector including a plurality of contacts and a liquid detection module coupled to at least one contact in the plurality of contacts. The liquid detection module can be configured to generate and apply a time varying voltage or current to the at least one contact over a range of frequencies, measure complex impedance including phase and magnitude at the at least one contact, and determine whether liquid intrusion has occurred on the contacts based on previously measured signatures of phase and magnitude versus frequency.

Abstract: A wireless power system may use a wireless power transmitting device to transmit wireless power to a wireless power receiving device. The wireless power transmitting device may transmit wireless power at a wireless power transmission frequency. Wireless power signals at the wireless power transmission frequency can create interference with a sensitive electrical component in the wireless power receiving device when the wireless power transmission frequency lies in a sensitive frequency band associated with the component. Measurement circuitry in the wireless power receiving device can measure the wireless power transmission frequency. In response to determining that the wireless power transmission frequency lies in a sensitive frequency band, the wireless power receiving device may send an in-band wireless power level adjustment request to the wireless power transmitting device. The request causes a frequency adjustment that moves the wireless power transmission frequency out of the sensitive band.

Abstract: An electronic device comprising a connector including a plurality of contacts and a liquid detection module coupled to at least one contact in the plurality of contacts. The liquid detection module can be configured to generate and apply a time varying voltage or current to the at least one contact over a range of frequencies, measure complex impedance including phase and magnitude at the at least one contact, and determine whether liquid intrusion has occurred on the contacts based on previously measured signatures of phase and magnitude versus frequency.

Abstract: A wireless power system may use a wireless power transmitting device to transmit wireless power to a wireless power receiving device. The wireless power transmitting device may transmit wireless power at a wireless power transmission frequency. Wireless power signals at the wireless power transmission frequency can create interference with a sensitive electrical component in the wireless power receiving device when the wireless power transmission frequency lies in a sensitive frequency band associated with the component. Measurement circuitry in the wireless power receiving device can measure the wireless power transmission frequency. In response to determining that the wireless power transmission frequency lies in a sensitive frequency band, the wireless power receiving device may send an in-band wireless power level adjustment request to the wireless power transmitting device. The request causes a frequency adjustment that moves the wireless power transmission frequency out of the sensitive band.

Abstract: A wireless power receiving device may have wireless power receiving circuitry with a coil and rectifier. The wireless power receiving circuitry receives wireless power signals and uses the rectifier to supply a corresponding output. The output is characterized by a current, a voltage, and a power equal to a product of the current and voltage. The output of the rectifier is supplied to a direct-current-to-direct-current power regulator integrated circuit, which supplies direct-current power to a system load and battery. A controller integrated circuit directs the power regulator circuit to dither the current while monitoring for a peak in the power. If the power regulator circuit dithers the current satisfactorily, the wireless power receiving circuitry may be operated at the peak power. If the power regulator circuitry does not dither the current in response to being directed to dither the current, a wireless power transmission level may be reduced.

Abstract: An iterative process of depositing on a solid electrolyte a coating of unconnected particles composed of an ionically conductive material. A liquid solution is also applied. The liquid solution includes an inorganic component. The deposited liquid is heated to a temperature sufficient to evaporate or otherwise remove some or all of the volatile components of the liquid solution. Typically the temperature is below 1000° and often at about 850° C. The effect of heating the solution is to cause ion conducting material in the solution to adhere to the surface of the existing ion conducting particles and form connections between these particles. This is understood to create an ion conducting skeletal support structure. Within the intrestices of this skeletal support structure, the step of heating is also understood to result in the deposition of the inorganic component that will begin to form a electron conducting structure.

Abstract: A method of bonding a first substrate to a second substrate includes providing a glass, applying the glass in a layer between the first and second substrates to form an assembly, and heating the assembly to a bonding temperature above a glass transition temperature of the devitrifying glass, selected to cause the glass to bond the first substrate to the second substrate. The devitrifying glass has constituents that include various amounts of group A in a molar concentration of 70-95%, group B in a molar concentration of 5-20%, group C in a molar concentration of 1-20%, group D in a molar concentration of 0-6%; and group E in a molar concentration of 0-10%. The group A, B, C, D and E groups are disclosed herein.

Abstract: A fuel cell system having an air quality sensor suite includes a fuel cell having an anode and a cathode, a fuel source providing a fuel flow, a fuel flow rate sensor having a fuel flow rate sensor output, a fuel flow control device, a fuel oxidizer flow conduit, a first mixing region coupled to the fuel source and the fuel oxidizer flow conduit, an anode chamber coupled to the anode, a combustion oxidizer flow conduit, a second mixing region coupled to the combustion oxidizer flow conduit, and at least one oxidizer flow rate sensor having an oxidizer flow rate sensor output. The system further includes at least one oxidizer pump, an air quality sensor having an air quality sensor output, and a control system coupled to the fuel flow rate sensor output, the oxidizer flow rate sensor output, and the air quality sensor output.