An apparatus for charging a battery of a user device includes a charge pump that converts an input voltage, received from a power adapter, to a system voltage that is less than the input voltage based on a ratio of the charge pump, a regulator coupled between the system voltage output by the charge pump and a battery of the user device, the regulator configured to control a battery charging voltage applied to the battery of the user device and to provide isolation between the system voltage that is applied to one or more components of the user device and the battery charging voltage applied to charge the battery of the user device, and a controller configured to determine a difference between the system voltage applied to an input of the regulator and the charging voltage output by the regulator.

A battery system having a positive output terminal and a negative output terminal is disclosed. The positive output terminal and the negative output terminal are adapted to provide power to an external load. The battery system comprises a relay including a contactor, a battery cell for providing electrical power to the external load via the contactor, and a battery management system. The battery management system includes a controller. The controller is adapted to manage operation of the contactor. The battery management system includes a power supply circuit adapted to provide regulated power to the controller and a standby circuit comprising a bistable latch powered by the battery cell. The standby circuit is coupled to the power supply circuit of the battery management system, to selectively provide power to the power supply circuit.

A device operative to transfer power and communicate wirelessly includes a drive-sense circuit (DSC), memory that stores operational instructions, and processing module(s). The DSC generates a drive signal based on a reference signal and provides the drive signal to a first coil via a single line and via a resonating capacitor, and simultaneously senses the drive signal via the single line, to facilitate electromagnetic coupling to a second coil to transfer power wirelessly to another device. The DSC also detects electrical characteristic(s) of the drive signal including whether a communication signal is transmitted from another device and generates a digital signal representative thereof. The processing module(s) generates the reference signal, processes the digital signal including to determine whether the communication signal is transmitted from the other device to the device and appropriately processes the digital signal to interpret control information of the communication signal to adapt the reference signal.

A power system may comprise a power system controller and a power storage. The power system controller may comprise a first pair of power terminals, a second pair of power terminals, at least one switch, and a central controller coupled to the at least one switch. The power storage may comprise storage power terminals connected to the first pair of power terminals. The second pair of power terminals may be coupled to a power source. The power system controller may be configured to control the switch to connect and disconnect the second pair of power terminals. The power system controller may be configured to receive power from the power storage during a process of connecting and disconnecting the second pair of power terminals.

In part, the disclosure relates to a method of reducing the interaction of mobile phones and capacitive touchscreens with electrically charged aerosols. The method may include reducing electrostatic field from a mobile device using one or more conductive meshes sized to shield a region of a mobile device, wherein the region of the mobile device is an electric field source. Additionally, the method may also include processing signals used to charge the mobile device using one or more of a linear regulator and a signal conditioner to reduce harmonic content of the signals such that the voltage level of signals used to charge the mobile device is less than about 100 V/m RMS, or even more preferably to less than about 20 V/m RMS.

A power supply unit for an aerosol inhaler includes: a power supply able to discharge power to a load for generating an aerosol from an aerosol source; a connector able to be electrically connected to an external power supply; a control device configured to control at least one of charging and discharging of the power supply or configured to be able to convert power which is input from the connector into charging power for the power supply; and a zener diode provided between the connector and the control device so as to be connected in parallel with the control device. A maximum value of zener voltage of the zener diode is lower than a maximum operation guarantee voltage of the control device.

A surgical end effector includes a cartridge. The cartridge includes first and second sensor arrays disposed in the cartridge. The first sensor array is configured to sense a function of a first component located within the cartridge and the second sensor array is configured to sense a function of a second component located within the cartridge. The first and second sensor arrays are electrically coupled to an electronic circuit. The electronic circuit includes a control circuit configured to receive signal samples from the first sensor array, receive signal samples from the second sensor array, and process the signals samples received from the first and second sensor arrays to determine a status of the cartridge.

A charging device, a charging method and a terminal, an output end of the main charging circuit and output ends of the at least two secondary charging circuits are connected to a battery of an electronic device, and the output end of the main charging circuit is used for supplying power for an internal chip of the electronic device, disconnecting a connection between the main charging circuit and the battery when a voltage of the output end of the main charging circuit reaches a voltage required by the internal chip, and supplying power for the battery through the output ends of the at least two secondary charging circuits, in this way, charging time is shortened and a purpose of fast charging a battery is achieved.

The invention relates to a method for generating and delivering charging current for an electric vehicle in a charging pole, comprising the steps of generating kinetic energy, feeding a first generator with the generated kinetic energy, feeding a second generator with the generated kinetic energy, converting the generated kinetic energy into electrical energy by means of the first generator, and converting the generated kinetic energy into electrical energy by means of the second generator.

A mobile device includes; a power line communication ( ) module that communicates data with an external device via a power line, receives a first preamble signal from the external device during a first preamble interval, receives a voltage signal as the data during a data reception interval following the first preamble interval, and demodulates the voltage signal to provide a demodulated voltage signal, a frequency/duty detector that detects a frequency and a duty of the first preamble signal, and a control circuit that performs signal a data determination operation on a demodulated voltage signal during a data period and using the first detected frequency and the first detected duty.