Abstract: A charging/discharging circuit and an electronic device. A first end of a first branch is connected to a voltage supply end, a second end thereof is connected to a first battery, and a voltage provided by the voltage supply end charges the first battery through the first branch; a first end of a second branch is connected to the voltage supply end, a second end thereof is connected to a second battery, and the voltage provided by the voltage supply end charges the second battery through the second branch; the second branch includes a first control circuit that is configured to adjust impedance of the second branch; and a processing module is configured to obtain a first current of the first branch and a second current of the second branch, and indicate, based on the first and second currents, the first control circuit to adjust impedance of the second branch.

Abstract: A method for locking repetition rate of an optical frequency comb is provided. A cavity length adjusting actuator is adopted to lock the repetition rate of the optical frequency comb. When a locking state of the cavity length adjusting actuator is in a critical threshold state, an optical delay line of an optical frequency comb optical system is adjusted to adjust the repetition rate of the optical frequency comb, so as to keep locking the repetition rate of the optical frequency comb. A locking device of the repetition rate is also provided, in which an optical delay line control system can judge the locking state of a cavity length adjusting actuator control system in real time, such that the repetition rate can be slowly adjusted within a wide range, and the locking state of the optical frequency comb can be maintained.

Abstract: An electronic device includes a signal trigger circuit, a flat-motor drive circuit, and a flat motor. The signal trigger circuit sends a starting instruction to the flat-motor drive circuit for instructing to start the flat motor. A processor of the flat-motor drive circuit sends a first triggering instruction to a voltage processing circuit of the flat-motor drive circuit after receiving the starting instruction. The voltage processing circuit provides a first working voltage V1 to the flat motor after receiving the first triggering instruction, and provides a second working voltage V0 to the flat motor after a first time period. V0<V1?V2, V0 is a rated voltage value of the flat motor, and V2 is a maximum forward voltage value that the flat motor can bear when the flat motor is started.

Abstract: A charging apparatus includes a sampling module, a control module, a clamping module, and a switched capacitor module. The sampling module is configured to connect to a battery, collect current status information of the battery, and provide collected status information for the control module, the control module is configured to adjust output energy of the clamping module based on the status information, and provide a drive signal for the switched capacitor module, the clamping module is configured to connect to a power supply, receive power supply energy provided by the power supply, process the power supply energy into output energy, and provide the output energy for the switched capacitor module, and the switched capacitor module is configured to provide charging energy for the battery based on the drive signal provided by the control module and the output energy provided by the clamping module.

Abstract: A charging apparatus includes a sampling module, a control module, a clamping module, and a switched capacitor module. The sampling module is configured to connect to a battery, collect current status information of the battery, and provide collected status information for the control module; the control module is configured to adjust output energy of the clamping module based on the status information, and provide a drive signal for the switched capacitor module, the clamping module is configured to connect to a power supply, receive power supply energy provided by the power supply, process the power supply energy into output energy, and provide the output energy for the switched capacitor module, and the switched capacitor module is configured to provide charging energy for the battery based on the drive signal provided by the control module and the output energy provided by the clamping module.

Abstract: An electronic device includes a signal trigger circuit, a flat-motor drive circuit, and a flat motor. The signal trigger circuit sends a starting instruction to the flat-motor drive circuit for instructing to start the flat motor. A processor of the flat-motor drive circuit sends a first triggering instruction to a voltage processing circuit of the flat-motor drive circuit after receiving the starting instruction. The voltage processing circuit provides a first working voltage V1 to the flat motor after receiving the first triggering instruction, and provides a second working voltage V0 to the flat motor after a first time period. Where, V0<V1?V2, V0 is a rated voltage value of the flat motor, and V2 is a maximum forward voltage value that the flat motor can bear when the flat motor is started.