Duane Francis Wald

Title: Duane Francis Wald: Innovator in Communications Technology

Introduction

Duane Francis Wald is a notable inventor based in Plymouth, MN (US). He has made significant contributions to the field of communications technology, particularly through his innovative patent.

Latest Patents

Wald holds a patent for a "Communications interface providing isolation and ringdown features." This invention includes a communications interface that features an isolation circuit for signals from a plain old telephone set (POTS) device to communications electronics. The design incorporates an isolated power supply, which includes a flyback transformer for a current loop supply and an isolated power source. Additionally, the telephone line isolation circuit features an optically isolated off-hook detection circuit and an isolation transformer, ensuring that communication electronics are isolated from the telephone current loop. This circuit also provides a ringing circuit for ringing a current loop device, such as a standard POTS device.

Career Highlights

Duane Wald is currently employed at Multi-Tech Systems, Inc., where he continues to develop and innovate in the field of communications technology. His work has been instrumental in enhancing the functionality and safety of communication devices.

Collaborations

Wald has collaborated with notable colleagues, including Jeffrey P. Davis and Timothy D. Gunn, contributing to various projects and innovations within the company.

Conclusion

Duane Francis Wald's contributions to communications technology through his patent and work at Multi-Tech Systems, Inc. highlight his role as an influential inventor in the industry. His innovative designs continue to impact the way communication devices operate today.