Douglas J Huhmann

Title: Douglas J. Huhmann and the Mechanical Field Effect Transistor Sensor

Introduction

Douglas J. Huhmann is an inventor associated with Tempe, Arizona, and Motorola Corporation. His patent work describes a sensor that uses mechanical movement to control electrical conduction in a semiconductor device.

Latest Patents

Huhmann is credited with 1 patent, titled “Mechanical Field Effect Transistor Sensor.” The invention places a drain and source on a semiconductor portion and uses a movable gate to enable conduction when the gate approaches or touches the semiconductor.

In the preferred design, the gate is a cantilever microbeam that moves up or down when force is applied. The patent also describes alternatives using a diaphragm or a simply supported beam. An external voltage source can supply voltage to the gate, while another embodiment uses piezoelectric material that generates voltage when compressed or expanded by forces associated with changes in acceleration or magnetic fields.

Career Highlights

Huhmann’s documented invention focuses on integrating mechanical motion with field-effect transistor operation. This approach offers a way to convert physical forces into changes in electrical behavior.

Collaborations

The provided information identifies Motorola Corporation as Huhmann’s company and Monty W. Bai as a coworker. The available details do not specify their respective roles in developing the patented sensor.

Conclusion

Douglas J. Huhmann’s patent presents a mechanical field-effect transistor sensor that links movement and applied forces with electrical conduction, reflecting his documented contribution to sensor innovation.