Robert A Erhardt

Title: The Innovative Mind of Robert A Erhardt

Introduction

Robert A Erhardt, an esteemed inventor based in Chicago, IL, has made significant contributions to the field of electronics, particularly in the realm of fluorescent lamp technology. With a total of four patents to his name, Erhardt's inventions are recognized for their innovation and practicality, enhancing the efficiency and reliability of fluorescent lighting systems.

Latest Patents

Among his latest innovations is a pair of patents for fluorescent lamp controllers. The first patent describes an electronic controller that incorporates a DC to AC converter, supplying high-frequency current to fluorescent lamps. This sophisticated controller features a preconditioner stage that includes a switched-mode power supply designed to accept line power and generate a suitable DC input for the converter. A notable highlight of this invention is the synchronization of the switched mode power supply and the DC to AC converter, allowing them to function in a fixed phase relationship and at the same frequency.

The second patent further enhances fluorescent lamp operation by detailing a controller that operates effectively during pre-ignition and ignition phases. This invention focuses on ensuring stable and reliable control of a half-bridge DC-AC converter at a frequency that is deliberately offset from the resonant frequency of the output circuit. This setup, which incorporates a transformer and capacitors, is critical for coupling the converter to a fluorescent lamp load.

Career Highlights

Robert A Erhardt is currently employed at North American Philips Corporation, where he continues to innovate and develop technologies aimed at improving lighting systems. His work demonstrates a deep understanding of electrical engineering and a commitment to enhancing the user experience through reliable lighting solutions.

Collaborations

During his career, Erhardt has collaborated with notable coworkers, including Mark W Fellows and John M Wong, further enriching his projects with their expertise and insights. Together, they have fostered an environment of innovation that has contributed to the advancements in their field.

Conclusion

In conclusion, Robert A Erhardt stands out as a prominent inventor whose groundbreaking patents in fluorescent lamp controllers demonstrate the power of innovation in enhancing technology. His contributions not only reflect his technical skills but also his dedication to creating products that improve energy efficiency and operational reliability in lighting systems. With his ongoing work at North American Philips Corporation, the legacy of his inventions is sure to influence the industry for years to come.