Jeffery B Parfenchuck

Title: Jeffery B. Parfenchuck: Innovator in Amplifier Technology

Introduction

Jeffery B. Parfenchuck is a notable inventor based in Tucson, AZ, recognized for his contributions to amplifier technology. He holds 2 patents that showcase his innovative approach to electronic circuit design. His work primarily focuses on enhancing the performance and efficiency of amplifier circuits.

Latest Patents

One of his latest patents is titled "Current shunt instrumentation amplifier with extended bipolar input common mode range." This invention involves an amplifier circuit that includes first and second operational amplifiers connected in a parallel configuration. The design allows for a differential input voltage to be applied between the input resistors, producing an output signal representative of feedback currents. The amplifier circuit is notable for its ability to extend the common mode input voltage ranges beyond the typical supply voltages.

Another significant patent is "Method and circuit for base current compensation." This invention addresses the challenge of injecting base current into a transistor device to compensate for lost current. The base current compensation circuit is designed to inject current without the usual headroom requirements, making it less complex than traditional methods. It includes a sampling circuit and a current mirror feedback circuit to provide multiples of the base current demanded by the transistor.

Career Highlights

Jeffery B. Parfenchuck is currently employed at Texas Instruments Corporation, a leading company in the semiconductor industry. His work at Texas Instruments has allowed him to develop and refine his innovative ideas in amplifier technology.

Collaborations

Throughout his career, Jeffery has collaborated with notable colleagues, including David Alexander Gammie and Jerry Doorenbos. These collaborations have contributed to the advancement of technology in their respective fields.

Conclusion

Jeffery B. Parfenchuck is a distinguished inventor whose work in amplifier technology has led to significant advancements in electronic circuit design. His patents reflect a commitment to innovation and efficiency in the field.