Stephen B Lombard

Title: The Innovations of Stephen B. Lombard

Introduction

Stephen B. Lombard is an accomplished inventor based in Gorham, ME (US). He is known for his significant contributions to the field of electronics, particularly in the development of innovative circuit designs. His work has led to the creation of a patent that showcases his expertise and creativity in engineering.

Latest Patents

Stephen B. Lombard holds a patent for a "Bus hold circuit with power-down and over-voltage tolerance." This invention describes a bus hold circuit composed of CMOS components that draws no DC current and is over-voltage tolerant. The design ensures that no leakage current is drawn from the input when the input voltage exceeds the bus hold circuit supply voltage. A feedback inverter is utilized to latch the Vin logic in the bus hold circuit. When Vin is low, it activates a first switch that drives the gate of a PMOS switch low, turning it on. The PMOS switch connects the power connection of the feedback inverter to Vcc. As Vin increases, the first switch is turned off, but the gate of the PMOS switch remains low until Vin exceeds Vcc. At that point, a comparator drives the gate of the PMOS to Vin, shutting the PMOS switch off. An arbiter circuit selects the higher of Vcc and Vin to bias the N-well of the PMOS switch and other PMOS components in the comparator and arbiter circuit. This biasing prevents leakage from the Vin by ensuring that the N-wells are never forward biased.

Career Highlights

Stephen B. Lombard is currently employed at Fairchild Semiconductor Corporation, where he continues to innovate and contribute to the field of semiconductor technology. His work at Fairchild has allowed him to collaborate with other talented engineers and researchers, further enhancing his skills and knowledge in the industry.

Collaborations

One of his notable coworkers is Myron J. Miske, with whom he has likely shared insights and expertise in their respective projects. Their collaboration exemplifies the teamwork often found in innovative environments.

Conclusion

Stephen B. Lombard's contributions to the field of electronics through his patent and work at Fairchild Semiconductor Corporation highlight his role as a significant inventor. His innovative designs continue to influence the industry and pave the way for future advancements.