Company Filing History:
5 out of 352 
4 out of 5 
1 out of 1 
Years Active: 1992-2011
Title: **Innovations of Carl K. Sawtell: A Pioneer in Power Supply Technology**
Introduction
Carl K. Sawtell, an accomplished inventor based in San Jose, CA, has made significant contributions to the field of power supply technology. With a portfolio that includes 14 patents, his work focuses on enhancing efficiency and reducing noise in electrical systems.
Latest Patents
One of Sawtell's noteworthy inventions is the **Class H Drive**, which outlines a method for driving a load using an output stage amplifier in a full bridge configuration. This invention utilizes a fast switching power converter to modulate the supply and maintain the output common mode at its minimum voltage. The feedback control system regulates the voltage of the bridge output stage terminals, allowing for high accuracy and improved efficiency without the introduction of switching noise and electromagnetic interference (EMI) typically associated with PWM driving. This methodology is also applicable to class AB, pseudo class AB, and class A output stages. The combination of this approach with a current oversampling digital to analog converter yields significant advantages, particularly in motor control applications.
Another significant invention is the **Power Supply Control Circuit with Optical Feedback**. This integrated circuit merges a low-current, high-speed optical receiver with primary side control functions of the power supply, paired with an optical emitter for feedback and control. This innovation simplifies components while enhancing performance and manufacturability, establishing a new standard in power supply design.
Career Highlights
Throughout his career, Carl K. Sawtell has contributed his expertise to several prominent companies, including Astec International Limited and Acu Technology Semiconductor Inc. His commitment to innovation in power supply systems has established him as a leader in the field, driving advancements that are widely utilized in modern technology.
Collaborations
Sawtell has had the opportunity to work alongside esteemed professionals in his field, including Paolo Menegoli and Marc E. Dagan. Their collaboration has undoubtedly contributed to the success of his projects, fostering an environment of shared knowledge and innovative thinking.
Conclusion
Carl K. Sawtell's contributions to power supply technology through his innovative patents have had a lasting impact on the industry. His dedication to improving efficiency and performance, along with his collaborative spirit, serves as an inspiration to future inventors and engineers. Through his work, Sawtell continues to pave the way for advancements in electrical systems and motor control applications.
Inventor’s Patent Attorneys refers to legal professionals with specialized expertise in representing inventors throughout the patent process. These attorneys assist inventors in navigating the complexities of patent law, including filing patent applications, conducting patent searches, and protecting intellectual property rights. They play a crucial role in helping inventors secure patents for their innovative creations.