Nio Nextev Limited

Apexone Microelectronics Ltd.

Chinese Academy of Fishery Sciences

Hao Zhu

Kris Tomasson

Chao Yang

Zhiling Zhao

Patrick Niall McGoldrick

Juho Suh

Tao Wei

Xiaolong Chen

Wenjie Hou

Xu He

Yi Zheng

Jianwen Lai

Changcheng Yang

Xingguo Liu

Yongqing Ren

Robert James Orr, Iv

Matthew Garwood

Michael Tropper

Stephen White

Younes Badi

Haibin Huang

Robert James Orriv

Zixin Gao

Keju Li

Wengang Qi

Andrea Carlon

The present invention relates to a floating hydrophyte planting device, comprising a height-adjustable support, a buoyant rope, a planting net rope, a stabilizing rope and hydrophytes. The height-adjustable support comprises a fixed part and a movable part. The fixed part comprises columns and inclined stayed and fixed steel wires. A sawtooth groove is arranged on one side face of the column in the height direction and has multiple notches at different heights. The movable part comprises a twisting pull rod. The twisting pull rod is provided with a cross locking column vertical to the body of the twisting pull rod. The locking column is limited in the notch. After the twisting pull rod is twisted, the cross locking column may separate from the notch; after the twisting pull rod moves in the vertical direction and is twisted again, the cross locking column is limited in another notch.

Floating hydrophyte planting device

Charging vehicle

Battery swapping station

A switching amplifier is disclosed and comprises: a power supply (Vcc); input circuits (Va, Vb); switch transistors (M, M) connected with each other in series; driving circuits (I, I) coupled with the switch transistors (M, M) respectively; a bootstrap circuit for supplying operation voltage to the driving circuit (I). The switching amplifier also comprises: leakage circuits (M, M) or auxiliary switching circuits (M', M&#x2032;). With the switching amplifier of the invention, the fluctuation of the bootstrap potential can be suppressed and the signal distortion of the switching amplifier can be prevented.

Switching amplifier

A class-D amplifier () includes a logic circuit () for controlling the operation of a switching bridge (). The logic circuit () transmits the differential mode of a differential pulse width modulation input signal and deletes a central portion of the common mode of input signal, while preserving pulses of a minimum pulse width following a rising edge and preceding a falling edge in common mode of the input signal. Deleting the central portion of the common mode signal improves the efficiency and reduces the electromagnetic interference radiation of the class-D amplifier (). Preserving the pulses of the minimum pulse width ensures the proper operation of the switching elements () in the switching bridge (), thereby reducing the distortion in the signal amplification.

Signal modulation scheme in class-D amplification and circuit therefor

Growing community of inventors

Shanghai, China

Hao Zhu