Chien-Fu Chang

Title: Innovations by Inventor Chien-Fu Chang

Introduction

Chien-Fu Chang is a notable inventor based in Hsinchu, Taiwan, recognized for his contributions to electrical engineering, particularly in the field of transimpedance amplifiers. With a total of three patents to his name, his work showcases a commitment to innovation and advancing technology that supports various applications.

Latest Patents

Chang's latest patents reflect his expertise and focus on improving transimpedance amplifier circuits. The first patent, "Auto Gain Controller," presents an advanced gain-controlled transimpedance amplifier circuit. This circuit includes a first gain unit with an input for receiving a first current, which outputs to a second gain unit and incorporates a current source for providing a second current. The design features a first impedance unit coupled in parallel with the second gain unit, enhancing performance through a comparator that integrates these elements effectively.

Another significant patent by Chang is the "Direct Current Offset Canceling Circuit of Trans-Impedance Amplifier and Automatic Gain Control Trans-Impedance Amplifier Thereof." This invention introduces a comprehensive system designed to manage direct current (DC) offset in transimpedance amplifiers. It includes inverters connected in series, a DC detector to retrieve and compare signals, and a DC eliminator that provides a pathway for the DC component of the input current once triggered. By integrating these components with a reference voltage unit and a voltage output amplifier, this circuit aims to optimize signal performance in various electronic applications.

Career Highlights

Throughout his career, Chien-Fu Chang has been a vital part of the Industrial Technology Research Institute, where he has driven numerous projects focused on electrical engineering and innovation. His technical skills and inventive approach have cemented his reputation as a key player in his field.

Collaborations

Chang often collaborates with colleagues, including Li-Ren Huang, leveraging teamwork to push the boundaries of current technologies. Their combined insights and skills have led to the development of sophisticated solutions that address tough engineering challenges.

Conclusion

Chien-Fu Chang's contributions to the field of electrical engineering, particularly through his patents, illustrate his innovative spirit and dedication to creating effective solutions within transimpedance amplifier technologies. His collaboration with fellow researchers continues to pave the way for future advancements in the industry, reinforcing the importance of teamwork in scientific progress.