Honor Device Co., Ltd.

Beijing Aerospace Institute for Metrology and Measurement Technology

Tieli Zhang

Zhi Chang

Hao Liu

Ting Huang

Yupeng Qiu

Yinxiao Miao

Yan Song

Zhitao Zhang

Xuan Li

Haibin Zhou

Jianli Chen

Xiaoqiang Gao

Yongyao Xu

Beibei Wang

Weiwei Wu

A method for automatically locking frequency of an optical frequency comb is performed through locking the microwave repetition frequency signal and the microwave carrier-envelop offset frequency signal of the optical frequency comb. The microwave repetition frequency signal is subjected to filtering, frequency division, and phase discrimination with a first reference signal to obtain a first error signal. A first output frequency of the frequency synthesizer is adjusted based on a direction of the first error signal and a first voltage signal. The microwave offset frequency signal is subjected to filtering, frequency division, and phase discrimination with a second reference signal to obtain a second error signal. A second output frequency of the frequency synthesizer is adjusted based on a direction of the second error signal and a second voltage signal.

Method and device for automatically locking repetition frequency and carrier-envelop offset frequency of optical frequency comb

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 Vto the flat motor after receiving the first triggering instruction, and provides a second working voltage Vto the flat motor after a first time period. V&#x3c;V&#x2264;V, Vis a rated voltage value of the flat motor, and Vis a maximum forward voltage value that the flat motor can bear when the flat motor is started.

Flat-motor driving method and drive circuit, and electronic device

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.

Charging apparatus and terminal

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Beijing, China

Tieli Zhang