James R Garrett

Title: Innovations by James R. Garrett

Introduction

James R. Garrett is an accomplished inventor based in Tewksbury, MA (US). He holds a total of 3 patents that showcase his expertise in electrical engineering and circuit design. His innovative contributions have significantly impacted the field of power supply technology.

Latest Patents

One of his latest patents is a control circuit for piezo transformer-based fluorescent lamp power supplies. This invention includes driver circuitry that generates pulse waveforms to provide excitation to the primary inputs of the piezo transformer. The circuit regulates lamp current and the voltage across the piezo transformer primary inputs, ensuring efficient operation. The frequency of the pulse waveforms is adjusted based on the lamp current, while the duty cycle is varied according to the voltage across the piezo transformer. This design allows the piezo transformer to operate close to resonance, enhancing circuit efficiency.

Another notable patent is the floating positive circuit breaker. This circuit breaker IC is designed to control an external NMOS switch connected between a supply voltage and a load referenced to ground. The circuit breaker is isolated from ground, which limits the voltage across it, allowing for the use of low voltage integrated circuit fabrication processes. It includes a sensor to monitor load current and provides a drive signal to control the switch, showcasing Garrett's innovative approach to circuit design.

Career Highlights

James R. Garrett has worked with notable companies, including Texas Instruments Corporation. His experience in these organizations has contributed to his development as a leading inventor in the field of electrical engineering.

Collaborations

Throughout his career, Garrett has collaborated with talented individuals such as James Edward Wells and Mark G. Jordan. These partnerships have fostered innovation and creativity in his projects.

Conclusion

James R. Garrett's contributions to the field of electrical engineering through his patents demonstrate his commitment to innovation and efficiency. His work continues to influence the development of advanced power supply technologies.