Suzhou Littelfuse Ovs Co., Ltd.

Soochow University

Suzhou Sonavox Electronics Co., Ltd.

Yu Wang

Yanqiu Jia

Dan Jin

Guoqiang Chai

Tuo Shi

Xiaoqing Wang

Du Cheng

Geyan Fu

Shihong Shi

Yuezhen Li

Rongwei Zhang

Xiaoping Gu

A method for realizing high-speed cladding of hollow offset-focus annual laser. The method includes the following steps: dividing laser into annual light, and forming an offset-focus annual light spot after the annual light is focused, which acts on a surface of a matrix; during cladding for the surface of the matrix, selecting laser parameters according to different materials; after every cladding, making a shift by 20-80% of the diameter of the light spot in a vertical direction of a scanning speed of the laser; in the cladding process, selecting shielding gas for protection, and blowing the shielding gas to the molten powder in the air to spray the molten powder in air towards the surface of the matrix at a certain speed so that the cladding layer and the matrix are bonded firmly, and cladding the surface of the matrix to form a coating layer.

Method for realizing high-speed cladding of hollow offset-focus annular laser

Disclosed are electrical relay assemblies including a positive temperature coefficient thermistor (PTC) for reverse connection protection. In some embodiments, a relay assembly includes a relay socket receiving a relay, a power source connected to the relay socket, and a positive temperature coefficient thermistor (PTC) connected between the relay socket and the power source.

Relay assembly with reverse connection protection

Provided herein are approaches for determining a status of a fuse. In some embodiments, a system may include a first fuse electrically connected to a first node and to a first resistor, and a second fuse electrically connected to a second node and a second resistor, wherein the first and second fuses are in parallel connection to a same port of a multiplexer. The system may further include a controller communicably connected with the multiplexer, the controller operable to read a voltage level of the first and second nodes.

Step voltage identification for multiple inputs

Provided herein are approaches for determining a status of a fuse or relay. In some embodiments, a system may include a first fuse or relay connected between a first input and a first output, and an optocoupler electrically connected with the first fuse or relay, wherein the optocoupler is operable to monitor a differential voltage of the first input or the first output. The system may further include an input/output (IO) expander receiving a status signal representing a state of the first fuse or relay, wherein only a single input port of the IO expander receives the status signal representing the state of the first fuse or relay.

Systems, circuits, and methods for determining status of fuse or relay

A speaker packaging device. The speaker packaging device comprises a base plate for supporting a plurality of speakers. The speaker packaging device also comprises a series of transverse baffles and a series of pairs of longitudinal baffles. The transverse baffles and the longitudinal baffles interlock over the base plate, forming a matrix of individual cells, or baffle units. Notches are preserved along each longitudinal baffle for accommodating the outer edges of the respective speakers within each baffle unit. In addition, a gap is preserved between adjacent baffle units to further accommodate the outer edges of the respective speakers. The notches are staggered along adjacent baffle units to conserve space.

Speaker packaging device and package body

Growing community of inventors

Suzhou, China

Yu Wang