An electric tool is powered by a battery. An electric tool includes a motor, a charging and discharging control circuit and a motor control circuit. Charging and discharging control circuit is configured to couple to a power adapter. Charging and dischargi...

An adapter with power delivery function includes a power transmission module, a first input connector, and an output connector. The power transmission module includes a bidirectional DC charging and discharging circuit, a bypass circuit, and a control circ...

A vehicle charging device and a method applied to the device are disclosed. The device includes a transformer and two impedance tuners. One side of the transformer has two communication wires to couple with an electric vehicle. Each of the two impedance tu...

A power conversion circuit is coupled to a motor and a wireless charging transmitter device. Power conversion circuit includes an inverter and a processor. Inverter includes three half-bridge circuits. Three half-bridge circuits are respectively coupled to...

Charging equipment is provided. The charging equipment includes a base plate, a cable reel, a cable, a charging head, a panel, and a housing. The base plate is disposed on a surface of a wall. The cable reel is disposed on the backside of the base plate, e...

A charging device for charging a battery is provided, including a first housing, a channel, a fan, an electronic member, and a second housing. The first housing has an inner space. The channel passes through the first housing, and the wall of the channel s...

A control method applied to a power supply system. The power supply system comprises at least one first power unit and a second power unit, and the at least one first power unit is configured to provide power to an electrical load according to a power prov...