This inventor holds 5 USPTO granted patents. Top assignees: Hon Hai Precision Industry Co., Ltd., Hong-Fu Jin Precision Industry (Shenzhen) Co., Ltd., Foxconn Technology Co., Ltd.. Active years: 2011-2012.
Company Filing History:
4 out of 19,792 
4 out of 4,047 
1 out of 1,231 
Years Active: 2011-2012
Title: **Innovations of Hai-Shan Sun: A Visionary in LED and Fan Control Technology**
Introduction
Hai-Shan Sun, an accomplished inventor based in Shenzhen, China, is known for his significant contributions to the fields of lighting and fan control technologies. With a portfolio of five patents, he has focused on developing innovative solutions that enhance the functionality and efficiency of electronic devices.
Latest Patents
One of his latest patents includes a **Light Emitting Diode Lamp and Control Circuit Thereof**. This invention involves a sophisticated control circuit designed to regulate the current through LEDs in an LED lamp. The circuit features a voltage regulator, an amplifier feedback circuit, and a photo-resistor. The innovative design allows the photo-resistor's resistance to increase as the light intensity decreases, which in turn signals the voltage regulator to adjust the current, thereby maintaining optimal light levels.
Another notable invention is a **Fan Controlling Circuit** that is engineered to detect the rotational speed of a fan. This circuit integrates a comparison circuit alongside a controlling chipset. By receiving a rotational speed signal from the fan and comparing it against a reference voltage, the circuit outputs a filtered signal. This allows the controlling chipset to respond with precise control signals, optimizing the fan's rotational speed.
Career Highlights
Hai-Shan Sun has collaborated with leading companies to develop his innovations, including Hong-Fu Jin Precision Industry (Shenzhen) Co., Ltd. and Hon Hai Precision Industry Co., Ltd. His work in these renowned organizations has played a vital role in the advancement of electronic technologies, particularly in the user-centric features of lighting and cooling systems.
Collaborations
Throughout his career, Hai-Shan has worked alongside talented colleagues like Chin-Wen Yeh and Zhi-Jian Peng. Their collaborations have contributed significantly to the enhancement of technology and innovation in their projects.
Conclusion
Hai-Shan Sun continues to be a pivotal figure in the realm of technological innovation, with a focus on LED lighting and fan control circuits. His patents not only reflect his expertise but also his commitment to improving everyday technology for users everywhere. As he forges ahead in his career, the impact of his work is sure to resonate within the industry for years to come.