Andrew J Macdonald

Title: Innovations of Andrew J Macdonald

Introduction

Andrew J Macdonald is a notable inventor based in Ballston Spa, NY (US). He has made significant contributions to the field of technology, particularly through his innovative patents. With a total of 2 patents, Macdonald has demonstrated his expertise and creativity in developing advanced systems.

Latest Patents

One of his latest patents is an ice detection system. This system and method for detecting the state and thickness of water accumulation on a surface incorporates a plurality of spaced, thin, electrically resonant circuits bonded to the surface. A radio frequency transmitter excites the circuits to resonance, while a receiver detects the resonant signal from each circuit. It determines the resonant frequency and quality factor of the circuit, correlating that information with predetermined data representing changes in resonant frequency and quality factor as a function of liquid water and ice accretion. This innovative approach establishes the state and thickness of water overlaying the circuits.

Another significant patent is a resonant power converter with current sharing among multiple transformers. This resonant power converter features a plurality of transformers, each having a primary winding and a secondary winding coupled thereto. The primary windings of all transformers are connected in series, while the secondary circuits are effectively connected in parallel for current addition. A relatively small portion of the resonance capacitor is placed across each primary winding to ensure low impedance, allowing the secondary-winding-connected rectifiers to switch independently and share the entire output current equally. This design utilizes multiple lower power transformers to replace a single high power transformer, reducing leakage inductance and maintaining a higher operating frequency.

Career Highlights

Andrew J Macdonald is associated with General Electric Company, where he has contributed to various innovative projects. His work has had a significant impact on the development of advanced technologies in the industry.

Collaborations

Macdonald has collaborated with notable coworkers such as Rudolph A Dehn and Robert Louis Steigerwald. Their combined expertise has fostered an environment of innovation and creativity.

Conclusion

Andrew J Macdonald's contributions to technology through his patents reflect his dedication to innovation. His work continues to influence advancements in various fields, showcasing the importance of inventive thinking in solving complex problems.