Shenzhen Tize Technology Co., Ltd.

Stmicroelectronics (shenzhen) R&d Co. Ltd.

Other

Stmicroelectronics S.r.l.

Harbin Institute of Technology

Jian Wen

Mei Yang

Yang Yang

Hong Xia Li

Davide Luigi Brambilla

Francesco Stilgenbauer

QiYu Liu

Shuming Tong

Wireless fence device

Wireless fence device and charging dock set

Anti bark collar device

Ultrasonic dog repeller

Ultrasonic dog training device

Dog training collar system

Waterer for pet

In an embodiment, an amplifier circuit includes a second stage that includes a first switch circuit including first and second terminals, a plurality of resistive elements coupled between the first and second terminals of the first switch circuit, and a plurality of switches configured to control an equivalent resistance between the first and second terminals of the first switch circuit. During play mode, the second stage has a gain between the input of the second stage and the output of the second stage of a first value. During a transition from mute mode to play mode, the amplifier circuit is configured to progressively increase the gain of the second stage from a second value to the first value. During a transition from play mode to mute mode, the amplifier circuit is configured to progressively decrease the gain of the second stage from the first value to the second value.

Play mute circuit and method

Pet feeding plate

Anti-bark collar device

School bus backpack

Growing community of inventors

Guangdong, China

Jian Wen