Qingying Liu

Title: Qingying Liu: Innovator in Over-Energy Protection Technology

Introduction

Qingying Liu is a prominent inventor based in Shenzhen, China. He has made significant contributions to the field of electrical engineering, particularly in the development of over-energy protection circuits and related devices. His innovative work has led to the filing of a patent that showcases his expertise and commitment to enhancing electrical safety.

Latest Patents

Qingying Liu holds a patent for an over-energy protection circuit, a residual current device, an electronic device, and a power distribution box. This invention features a protection circuit with high operating reliability. It includes a first over-energy absorption circuit, a second over-energy absorption circuit, and a residual current determining circuit. The first over-energy absorption circuit receives a first electrical signal output from a current transformer. When the voltage value of the first electrical signal is greater than or equal to a first preset threshold, it performs step-down processing on the first electrical signal to obtain a second electrical signal. This second electrical signal is then output to the second over-energy absorption circuit. Alternatively, if the voltage value of the first electrical signal is less than the first preset threshold, the first electrical signal is directly output to the second over-energy absorption circuit.

Career Highlights

Qingying Liu is currently employed at Huawei Technologies Co., Limited, a leading global provider of information and communications technology (ICT) infrastructure and smart devices. His role at Huawei allows him to work on cutting-edge technologies and contribute to the company's innovative projects.

Collaborations

Some of his notable coworkers include Kui Li and Feng Niu. Their collaboration within Huawei fosters a creative environment that encourages the development of advanced technologies.

Conclusion

Qingying Liu's contributions to the field of electrical engineering, particularly through his patent for an over-energy protection circuit, highlight his innovative spirit and dedication to improving electrical safety. His work at Huawei Technologies Co., Limited further emphasizes his role as a key player in the advancement of technology.