Company Filing History:
2 out of 3,975 
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1 out of 2,546 
Years Active: 1976-2002
Title: The Innovations of William J. Kerwin
Introduction
William J. Kerwin is a notable inventor based in Tucson, AZ, with a significant contribution to the field of electrical engineering. He holds a total of 5 patents, showcasing his innovative spirit and technical expertise. His work primarily focuses on advanced electrical systems and devices that enhance performance and safety.
Latest Patents
Among his latest patents, Kerwin developed a "Transformerless High Voltage Inverter Using a Fourth-Order Impedance Network." This invention features an inverter that utilizes a fourth-order impedance network, which is coupled between the output and input of an amplifier. This design allows the inverter to oscillate and produce high voltage at the output of the impedance network. The impedance of one portion of the network is designed to be at least ten times that of another portion at the frequency of oscillation.
Another significant patent is the "Automatic Voltage Imbalance Detector." This device is designed to indicate and prevent damage to voltage cells, such as galvanic cells and fuel cells connected in series. It achieves this by detecting sequential voltages and comparing them to adjacent voltage cells. The implementation involves operational amplifiers and transistor-based switching circuitry. This device is particularly useful in battery-powered electric vehicles and series-connected fuel cells, as it helps prevent damage to the cells.
Career Highlights
Throughout his career, William J. Kerwin has worked with various organizations, including the United States of America as represented by the United States and Products of Advanced Technology, Inc. His contributions have significantly impacted the development of electrical systems and devices.
Collaborations
Kerwin has collaborated with notable individuals in his field, including J. Byron McCormick and Ronald E. Bobbett. These collaborations have further enriched his work and expanded the scope of his inventions.
Conclusion
William J. Kerwin's innovative contributions to electrical engineering demonstrate his commitment to advancing technology. His patents reflect a deep understanding of complex electrical systems and a dedication to improving their functionality and safety.