Ray E Freudenberg

Title: Ray E Freudenberg: Innovator in Ground Fault Circuit Interruption

Introduction

Ray E Freudenberg is a notable inventor based in Tucson, AZ (US). He has made significant contributions to the field of electrical engineering, particularly in the development of safety devices for aircraft electrical systems. His innovative approach has led to the creation of a unique ground fault interrupt circuit apparatus.

Latest Patents

Freudenberg holds 1 patent for his invention titled "Ground fault interrupt circuit apparatus for 400-Hz aircraft electrical." This patent describes a resettable ground fault circuit interrupter that is specifically designed for use with 400-Hz aircraft electrical systems. The device is engineered to interrupt the AC power between an aircraft electrical system and one or more electrical appliances when a ground fault occurs.

Career Highlights

Throughout his career, Freudenberg has focused on enhancing the safety and reliability of electrical systems in aviation. His patent utilizes an imbalance sensor, implemented as a multi-turn coil of a transformer, to detect ground faults. The signal generated by the coil is amplified and applied to a thyristor, which determines the circuit's configuration for interrupting or allowing the AC signal. Additionally, light-emitting diodes indicate the interruption status, and a reset switch is provided to restore functionality after a fault is cleared.

Collaborations

Freudenberg has worked alongside talented individuals such as David C Randolph and John F Rix. Their collaborative efforts have contributed to advancements in electrical safety technologies.

Conclusion

Ray E Freudenberg's innovative work in ground fault circuit interruption has made a significant impact on aircraft electrical safety. His contributions continue to influence the field and enhance the reliability of electrical systems in aviation.