Jan Nnegren

Title: Jan Nnegren: Innovator in Microwave Technology

Introduction

Jan Nnegren is a notable inventor based in Norrkoping, Sweden. He has made significant contributions to the field of microwave technology, particularly through his innovative patents. With a total of 4 patents to his name, Nnegren has demonstrated a commitment to advancing microwave applications.

Latest Patents

One of his latest patents is for a magnetron power supply with indirect sensing of magnetron current. This invention involves a magnetron serving as the microwave source in a microwave oven, driven by a Switch Mode Power Supply (SMPS). The resonance circuit of the power supply includes a transformer connected to the magnetron via a voltage multiplier. A current transformer is utilized to obtain a feedback signal proportional to the power fed to the magnetron, allowing for effective power regulation. Another significant patent is for a microwave oven with a timer device. This device is driven by a ripple voltage related to the mains frequency, which appears only when microwave energy is being fed into the oven cavity.

Career Highlights

Jan Nnegren is currently employed at U.S. Philips Corporation, where he continues to innovate in the field of microwave technology. His work has contributed to the development of more efficient and user-friendly microwave ovens.

Collaborations

Nnegren has collaborated with Eckart Wilholm Braunisch, further enhancing the innovative capabilities within his projects.

Conclusion

Jan Nnegren's contributions to microwave technology through his patents reflect his expertise and dedication to innovation. His work continues to influence the design and functionality of microwave ovens, showcasing the importance of inventive minds in advancing technology.