Company Filing History:
Years Active: 1980
Title: David H Riesland: Innovator in Electrical Lamp Ballast Systems
Introduction
David H Riesland is a notable inventor based in Danville, Illinois. He has made significant contributions to the field of electrical engineering, particularly in the development of efficient ballast systems for gaseous discharge lamps. His innovative work has led to advancements that improve the performance and longevity of fluorescent lamps.
Latest Patents
David H Riesland holds a patent for a high-efficiency ballast system designed for gaseous discharge lamps. This electrical lamp ballast system enhances the starting and operating efficiency of fluorescent lamps. The system features a high leakage reactance autotransformer with primary and secondary windings, along with a ballast capacitor connected in series with the secondary winding. This configuration is designed to work with two serially connected fluorescent lamps that operate at low starting and operating voltages. The secondary circuit connects to a tap on the primary winding, which reduces the ratio of ballast power input to lamp light output. This innovative system results in a reduced lamp current crest factor, thereby improving the life and operating characteristics of the lamps.
Career Highlights
David H Riesland is associated with General Electric Company, where he has applied his expertise in electrical engineering to develop innovative solutions. His work has been instrumental in enhancing the efficiency of lighting systems, contributing to energy savings and improved performance in various applications.
Collaborations
Throughout his career, David has collaborated with esteemed colleagues, including Edward E Hammer and Eugene Lemmers. These partnerships have fostered a creative environment that has led to significant advancements in the field of electrical engineering.
Conclusion
David H Riesland's contributions to the development of high-efficiency ballast systems have made a lasting impact on the lighting industry. His innovative approach continues to influence the design and operation of fluorescent lamps, showcasing the importance of engineering advancements in everyday technology.