Company Filing History:
Years Active: 1984
Title: William E. Evans: Innovator in Voltage Regulation and Inverter Circuits
Introduction
William E. Evans, an accomplished inventor based in Garland, TX, has made significant contributions to the fields of voltage regulation and inverter drive circuits. With three patents to his name, he has demonstrated a strong commitment to innovation and engineering excellence.
Latest Patents
Among William's most notable patents is the "Link Regulator with Feed Forward Switching Control." This invention outlines a link regulator designed to provide a regulated voltage across a broad range of input frequencies and load currents. The unique approach of comparing the frequency of an internal voltage-controlled oscillator (VCO) with the input frequency allows for the generation of a reference error signal. By integrating the unregulated DC voltage for a time proportional to this error signal, it effectively controls a series switching element, ensuring a constant volts/seconds output. To maintain regulation across varying load currents, a shunt switch produces low impedance at the filter input, thereby clamping it to ground during periods when the series switching element is inactive.
Another groundbreaking patent by William is the "Multiphase Inverter Drive Circuit with Synchronized Switching Delay." This invention introduces a synchronized switching delay circuit that utilizes an oscillator and multivibrator to generate a synchronized delay pulse. With three waveforms shifted in phase by 120 degrees, the circuit enhances the performance of a three-phase bridge circuit by ensuring that one switch in each pair completely turns off before the other turns on. This methodology improves the efficiency and reliability of multiphase inverter systems.
Career Highlights
William is currently affiliated with Varo, Inc., where he has played a vital role in advancing the company's technological advancements. His expertise in electrical engineering and innovative thinking have placed him at the forefront of cutting-edge developments in voltage management and inverter technologies.
Collaborations
Throughout his career, William has collaborated closely with fellow engineer Jimmie D. Gillett, contributing to significant projects and furthering the goals of their team at Varo, Inc. Together, they have been instrumental in driving innovation and implementing practical solutions in their respective fields.
Conclusion
William E. Evans exemplifies the spirit of innovation in modern engineering. His inventive prowess, demonstrated through his patents, showcases a dedication to improving technology and enhancing performance across various applications. As the landscape of electrical engineering continues to evolve, innovators like William will undoubtedly play a crucial role in shaping its future.