Huawei Technologies Co., Limited

Shenzhen Airtok Technology Co., Ltd.

Xiaosong Liu

Yuewen Jia

Jiang Wang

Yongjun Dai

Cheng He

Junyong Zhang

Hongbo Zhang

Qinghai Wang

Tongjie Li

Wenliang Zhang

Qisheng Ke

Qishen Ke

Screen

A transformer and a switch-mode power supply are provided. The transformer includes: a magnetic core structure; several windings that surround a same magnetic cylinder in the magnetic core structure in a stacked manner, where the several windings include at least one primary-side winding and at least one secondary-side winding; and an electromagnetic shielding layer that is disposed between at least two adjacent windings, where the two adjacent windings are a primary-side winding and a secondary-side winding, and the electromagnetic shielding layer is made of a magnetic material. The electromagnetic shielding layer of the transformer can suppress a noise current of the winding, to reduce noise.

Transformer and switch-mode power supply

Disclosed is an air purifier with an ambient lamp. The air purifier includes an upper housing, a lamp belt, and a lower housing, where a bottom edge of the upper housing is provided with a fixing recess matching the lamp belt in shape, the lower housing includes a base and a supporting plate vertically arranged at a preset position of the base, and the base is fixedly connected to a bottom of the upper housing, such that one end of the supporting plate away from the base presses the lamp belt in the fixing recess, and the lamp belt is arranged opposite an edge of the base at an interval. According to the present invention, the lamp belt is fixed to the bottom of the upper housing, and the lamp belt and the base of the lower housing are arranged at an interval.

Air purifier with ambient lamp

A mobile terminal, including a clock generator, a first frequency conversion circuit, a first module, a second frequency conversion circuit, and a second module. The first frequency conversion circuit performs frequency conversion on a clock signal generated by the clock generator, to obtain a first clock signal, and outputs the first clock signal to the first module. The second frequency conversion circuit performs frequency conversion on the clock signal generated by the clock generator, to obtain a second clock signal, and outputs the second clock signal to the second module. The mobile terminal has an improved anti-electromagnetic interference capability.

Mobile terminal

An electronic device comprising a USB port and a PCB is provided. A first cabling layer of the PCB has a first floating area and a line outside the first floating area, an insulation medium is between the first floating area and the line, a second cabling layer of the PCB is adjacent to the first cabling layer and has a first metal area, an orthographic projection of the first floating area on the second cabling layer and the first metal area have an overlapping area, and the first floating area is not connected to the first metal area; and a metal housing of the USB port has a plurality of fixed contacts fastened to the PCB and not connected to a ground of the PCB, the contacts include a first fixed contact connected to the first floating area and not connected to the first metal area.

Device with USB port

Growing community of inventors

Shenzhen, China

Xiaosong Liu