Dennis Francis Williamson

Title: Dennis Francis Williamson: Innovator in Electrical Engineering

Introduction

Dennis Francis Williamson is a notable inventor based in Erie, PA (US). He has made significant contributions to the field of electrical engineering, holding a total of 5 patents. His work primarily focuses on improving the functionality and safety of electrical systems.

Latest Patents

Williamson's latest patents include innovative technologies such as a control logic for a phase-controlled rectifier system. This apparatus provides firing signals to a phase-controlled rectifier circuit at a time when the valves in the rectifier circuit are forward biased, eliminating the need for continuous firing signals. The system monitors the voltage across the rectifier valves and generates a signal when a valve is forward biased. This signal is then processed by a gating circuit to determine if a normal phase control firing command was initiated before the valve became forward biased. If a command was initiated, the gating circuit allows the signal to pass to a valve firing circuit, which then provides firing signals to the rectifier circuit. If no command was previously initiated, the signal is inhibited, and firing signals are applied only upon receipt of a firing command.

Another significant patent is for a D-C motor flashover protection system. This method and apparatus detect and correct flashover occurrences in direct current electric motors. The system continuously monitors the polarity and magnitude of voltage on the motor's field winding. A sudden reversal of polarity, accompanied by a rapid increase in voltage magnitude, generates a flashover signal. This signal is coupled to power-controlling elements that regulate the power supplied to the motor, effectively removing power from the motor when necessary. In a preferred embodiment, the apparatus is designed for a two-motor system with two field windings connected in series, allowing for differential monitoring of field voltage.

Career Highlights

Williamson is currently employed at General Electric Company, where he continues to innovate and develop new technologies. His work has had a lasting impact on the electrical engineering field, particularly in enhancing the safety and efficiency of electrical systems.

Collaborations

Throughout his career, Williamson has collaborated with notable colleagues, including Thomas D. Stitt and Ronald B. Bailey. These collaborations have contributed to the advancement of various projects and innovations within the company.

Conclusion

Dennis Francis Williamson is a distinguished inventor whose work in electrical engineering has led to significant advancements in technology. His patents reflect a commitment to