Donald E Vollrath

Title: Innovations of Donald E Vollrath

Introduction

Donald E Vollrath is a notable inventor based in Greenfield, WI (US). He has made significant contributions to the field of electrical engineering, particularly in the development of timing generators for multi-phase control rectifier systems. With a total of 2 patents to his name, Vollrath's work showcases his expertise and innovative spirit.

Latest Patents

One of his latest patents is a timing generator designed for use with multi-phase controlled rectifier systems. This invention produces a ramp signal that is synchronized with the power source and compared with a command signal indicative of the desired SCR ignition angle. The sequencing circuit, which has a finite number of output states, is stepped cyclically by a comparator. This circuit couples a source of SCR-gating pulses to the appropriate SCR based on its state and a predetermined ignition pattern. Notably, the invention includes multiplexing of the comparator output, where the command signal is offset by 60 degrees after each transition. Additionally, it generates an alternate ramp that is 180 degrees out of phase with the first ramp, enhancing the system's efficiency.

Career Highlights

Vollrath has been associated with Litton Industrial Products, Inc., where he has applied his innovative ideas to develop advanced electrical solutions. His work has contributed to the company's reputation for excellence in engineering and technology.

Conclusion

Donald E Vollrath's contributions to the field of electrical engineering through his patents and work at Litton Industrial Products, Inc. highlight his role as a significant innovator. His inventions continue to influence the development of control systems in various applications.