Huawei Technologies Co., Limited

Evergreen Micro Devices Co., Ltd.

Fremont Micro Devices (sz) Limited

Weiming Liao

Matthew Man Ho Ku

Yue Zheng

Xin Lei

Jianqing Liu

Guangyao You

Hongze Zhu

Lifang Guo

The present disclosure disclose a configuration management method and apparatus, and a device. A control device determines that an application message needs to be published to a target logical group. The control device obtains an identifier of the target logical group and queries, according to a gateway mapping table and the identifier of the target logical group, a gateway connected to each of the at least one target terminal, to obtain at least one target gateway. The control device generates based on the application message, a MQTT publish packet and sends the MQTT publish packet to the at least one target gateway, where the MQTT publish packet is used to instruct a target gateway that receives the MQTT publish packet to send a corresponding application message to each target terminal that is connected to the target gateway and that belongs to the target logical group.

Configuration management method and apparatus, and device

A LED dimming device, and a LED dimming and a driving circuit using such LED dimming device are discussed. In present embodiment, the LED dimming device multiplexes an inputting switch and/or a sampling module of the LED driving circuit for dimming. such LED dimming device will not affect the sine waves of input current, in such a way, power factor and work efficiency will be increased while the harmonic coefficient and interference signal will be reduced.

LED dimming device and LED dimming and driving circuit

The present invention relates to a charge status indicator and a charger. The charger comprises a charging power supply and a charge status indicator, wherein, the charge status indicator comprises a detecting chip for monitoring charge status connected between the primary winding of transformer and ground, and a display module used for displaying the charge status, wherein, said detecting chip for monitoring charge status comprising: a detecting module for detecting the charging state of the charge power supply; a comparing module for determining the current charge status based on the detected charging state. By employing the charger or the charge status indicator for a charger, a primary-side feedback control Flyback SMPS may be employed, just a simple and reliable circuit is needed, and higher efficient can be achieved.

Apparatus for controlling LED indicator of charging status at the primary control side of an AC-DC power charger

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Shenzhen, China

Weiming Liao