Huawei Device (dongguan) Co., Ltd.

Shenzhen Lvsun Electronics Technology Co., Ltd

Shenzhen Lvsun Technology Co., Ltd.

Huawei Device Co., Ltd.

Jrd Communication Inc.

Jianhua Xu

Xiaochen Chen

Rui Sun

Fan Huang

Transcutaneous electrical nerve stimulation or TENS device

Disclosed a conversion device for a quick charger, comprising an input end, a voltage regulator module, a recognition module, a control module and an output end, wherein, the voltage regulator module receives a power voltage through the input end to stabilize a voltage, and outputs the power voltage after voltage stabilization to the recognition module and the control module; the control module reads a conversion voltage of the output end, and produces a conversion signal group according to the conversion voltage to output to the recognition module; and the recognition module produces a handshake signal and a voltage recognition signal according to the conversion signal, and outputs through the input end. Through the device and method, equipment that are not quickly charged may also be charged by the quick charger, so that an application scope of the quick charger is expanded.

Conversion device for quick charger and method for realizing charging conversion

Embodiments of the present invention provide a wireless access method and a related device and system, where the method includes: reading, by a terminal device, access point information stored in an external near field communication tag; and acquiring, by the terminal device, one piece of target access point information according to the read access point information, and establishing, according to the target access point information, a wireless connection to an access point to which the target access point information belongs.

Wireless access method and related device and system

An LED streetlight circuit includes an AC power supply, a switching circuit, an output controller and an LED array connected to the output controller. The switching circuit includes an EMI filter connected to the AC power supply, a power factor corrector connected to the EMI filter, a transformer connected to the power factor corrector, a rectifier/filter connected to the transformer, a standby power supply connected to the power factor corrector, a controller connected to the transformer, an luminance regulator connected to the controller, an optical coupler controlling loop connected to the controller and the rectifier/filter, and an optically controlled switch for connecting the standby power supply to the optical coupler controlling loop. The output controller includes a CC/CV controller connected to the rectifier/filter and the optical coupler controlling loop, an output voltage regulator connected to the CC/CV controller, and an output current regulator connected to the CC/CV controller.

LED streetlight circuit

A power supply includes an AC-to-DC circuit, a DC-to-DC circuit, an interface used by both of the AC-to-DC circuit and the DC-to-DC circuit, and a control circuit for controlling the interface. The interface includes an ACL/DC+ input terminal, an ACN/DC&#x2212; input terminal and a ground. The control circuit includes an AC/DC detecting circuit for determining whether an input voltage is AC or DC, an AC/DC converting circuit for selectively conducting AC or DC, and a conversion-controlling circuit for controlling the direction of the input voltage based on the determination in the AC/DC detecting circuit.

Growing community of inventors

Shenzhen, China

Jianhua Xu