Company Filing History:
Years Active: 2001-2005
Title: The Innovations of Brad Marshall
Introduction
Brad Marshall is an accomplished inventor based in Dumbarton, New Hampshire, known for his contributions to the field of motor drive circuits. With a total of three patents to his name, he has made significant advancements in the design and functionality of DC motor drive circuits.
Latest Patents
One of his latest patents is the "Low pin counted D-C motor integrated drive circuit." This innovative DC motor drive circuit features a switching circuit that drives the coils of a small permanent magnetic DC motor. The design is preferably implemented in an integrated circuit device, such as a silicon CMOS device. Integrated into the same device is a magnetic sensor that detects the position of the permanent magnet as it passes defined points during its revolution. The control circuitry derives the timing waveforms necessary for driving the coils. Additionally, the integrated power devices limit the rise and fall times of the applied voltages and currents, effectively reducing or eliminating unwanted RFI. The circuit also includes additional circuitry to derive the necessary power for the magnetic sensor, control circuitry, and switching circuitry from the connections between the switching circuitry and the coils, thus eliminating the need for a separate power supply connection.
Career Highlights
Brad Marshall currently works at Melexis NV, where he continues to innovate and develop advanced technologies in motor drive systems. His work has been instrumental in enhancing the efficiency and performance of DC motors, making them more reliable and effective for various applications.
Collaborations
Throughout his career, Brad has collaborated with notable colleagues, including Rudi De Winter and Vincent Hiligsmann. These partnerships have fostered a creative environment that encourages the exchange of ideas and the development of cutting-edge technologies.
Conclusion
Brad Marshall's contributions to the field of motor drive circuits exemplify the spirit of innovation and creativity. His patents reflect a deep understanding of technology and a commitment to advancing the capabilities of DC motors. His work at Melexis NV continues to influence the industry and inspire future innovations.