Douglas R Watson

Title: Innovations of Douglas R Watson

Introduction

Douglas R Watson is a notable inventor based in Sanford, CT (US), recognized for his contributions to motor control technology. With a total of 10 patents to his name, Watson has made significant advancements in the field of solid-state motor speed control.

Latest Patents

One of Watson's latest patents is a solid-state motor speed control system. This innovative system is designed to operate motors quietly, eliminating the annoying buzzing noises typically generated by motor windings. The invention allows for infinitely variable speed control settings, enhancing the user experience. Unlike traditional triacs that produce RFI noise and cause buzzing, Watson's design utilizes power FETs or IGBTs for efficient power delivery to the motor load. The power switches are managed by an oscillator that generates a pulse train with a user-controllable duty cycle. A filter shapes this signal into a trapezoidal control signal that drives the gate input of the power switch. Additionally, a kick start circuit is included to turn the motor on initially for two to three seconds, overcoming inertia. A zero crossing detector further minimizes noise by ensuring the motor is activated only at the zero crossing of the AC source.

Career Highlights

Throughout his career, Douglas R Watson has worked with reputable companies, including Leviton Manufacturing Company, Inc. His experience in the industry has contributed to his innovative approach to motor control technologies.

Collaborations

Watson has collaborated with notable coworkers such as Joseph G Justiniano and Lester Rivera, enhancing his projects with their expertise.

Conclusion

Douglas R Watson's contributions to solid-state motor speed control demonstrate his commitment to innovation and excellence in engineering. His patents reflect a deep understanding of motor technology and a desire to improve user experience through quieter and more efficient systems.