James Cary Mejeur

Title: Innovations of James Cary Mejeur

Introduction

James Cary Mejeur is an accomplished inventor based in Grand Blanc, MI (US). He has made significant contributions to the field of automotive technology, particularly in the development of gauge driving circuits. His innovative approach has led to the creation of a patent that enhances the functionality and reliability of automotive gauges.

Latest Patents

James Cary Mejeur holds a patent for a "Robust gauge driving circuit with pulse modulated input." This invention involves an input circuit designed for an automotive gauge driver that receives a pulse width modulated or pulse frequency signal. The duty cycle of this signal represents a parameter to be displayed. A switching transistor controls an RC filter to develop an analog voltage that is proportional to the parameter. The input circuit is engineered to bias the transistor, allowing it to respond correctly to the input signal across a wide range of supply voltages, even when the ground potential differs from that of the input signal source. The output transistor means, which may include one or two transistors in series with a gauge coil, is controlled by the analog voltage to provide coil current, ensuring linear gauge operation. Diodes within the input circuit limit the analog voltage range to values that match the turn-on characteristics of the transistor means. This patent showcases his expertise in creating efficient and reliable automotive systems.

Career Highlights

James Cary Mejeur has had a notable career at Delco Electronics Corporation, where he has applied his skills in electronics and engineering to develop innovative solutions for automotive applications. His work has contributed to advancements in automotive technology, particularly in the area of gauge systems.

Collaborations

Throughout his career, James has collaborated with talented individuals such as Jeffrey Lynn Shepard and Frank J Atherton. These collaborations have fostered an environment of innovation and creativity, leading to the development of cutting-edge technologies in the automotive sector.

Conclusion

James Cary Mejeur is a distinguished inventor whose work in automotive gauge technology has made a lasting impact. His patent for a robust gauge driving circuit exemplifies his commitment to innovation and excellence in engineering. His contributions continue to influence the automotive industry, showcasing the importance of inventive thinking in technology development.