David M Johns

Title: David M Johns: Innovator in Power Control Technologies

Introduction

David M Johns is a notable inventor based in Groveland, MA (US). He has made significant contributions to the field of power control technologies, holding 2 patents that showcase his innovative approach to electrical engineering.

Latest Patents

One of his latest patents is titled "Load voltage-independent active power control of power converters." This invention focuses on controlling the magnitude and wave shape of instantaneous power draw from a single-phase alternating current power source to a power converter. The control scheme operates independently of the direct current output voltage of the converter. A fast averaging methodology is employed to limit the magnitude of power draw, enhancing the efficiency of power converters.

Another significant patent by David M Johns is the "High voltage pulse generator." This device utilizes an even number of Marx cells with L-C inversion topology. Each Marx cell is paired with an individual inverter transformer connected to an AC power supply. The secondary of each transformer is half-wave rectified to charge energy storage capacitors. The design includes a distributed voltage sensing scheme for accurate feedback and employs an inductive element to achieve a magnetic diode effect, reducing component stress and improving overall efficiency.

Career Highlights

David M Johns is currently associated with Kaiser Systems, Inc., where he continues to develop innovative solutions in power control technologies. His work has significantly impacted the efficiency and reliability of power converters.

Collaborations

David collaborates with Jeffrey Oicles, contributing to advancements in their field through shared expertise and innovative ideas.

Conclusion

David M Johns is a prominent inventor whose work in power control technologies has led to significant advancements in the industry. His patents reflect a commitment to innovation and efficiency in electrical engineering.