Location History:
- Lake Hiawatha, NJ (US) (1990)
- Garland, TX (US) (1992 - 1999)
Company Filing History:
3 out of 3,345 
1 out of 5 Years Active: 1990-1999
Title: **William F. Slack: Innovator in Power Supply Technology**
Introduction
William F. Slack, an inventive mind from Garland, TX, has made significant contributions to the field of electrical engineering, particularly in the development of power supply technologies. With a total of four patents to his name, Slack is recognized for his innovative approaches to converting electrical energy.
Latest Patents
One of his latest inventions is the **Dual Stage AC to DC Switching Power Supply with High Voltage**. This advanced power supply is designed to convert low AC power into a low-voltage, high-current DC output through a two-stage process. The initial stage utilizes a full-wave bridge rectifier to convert AC voltage into an intermediate raw DC voltage. The subsequent stage employs a DC to DC forward converter, which uses a transformer connected to the intermediate raw DC voltage via a switch that operates at a predetermined frequency. During the "on" cycle of the switch, current flows through the primary winding to charge an inductor, which subsequently powers the load during the "off" cycle by utilizing the energy stored in the inductor.
Another notable patent by Slack is the **Single Stage Power Factor Corrected Converter Having Isolated Output**. This innovative converter minimizes harmonics at the AC input by ingeniously controlling its power switching. It ensures that the current waveform in a switched inductor closely mirrors the rectified version of the input AC voltage waveform. This technology effectively mitigates voltage spikes caused by switching inductors and adjusts the output load to optimize performance.
Career Highlights
Slack's professional journey includes significant roles at esteemed organizations such as **AT&T Bell Laboratories** and **Operating Technical Electronics, Inc.**. His experience at these companies has laid a solid foundation for his innovative ventures and culminated in the development of impactful technologies.
Collaborations
Throughout his career, Slack had the opportunity to work alongside notable individuals including James C. Wadlington and Simon Fraidlin. These collaborations have further enriched his experience and facilitated the sharing of ideas in the fast-evolving field of electrical power solutions.
Conclusion
William F. Slack stands out as a remarkable inventor whose contributions to power supply technology demonstrate the importance of innovation in advancing electrical engineering. His patents not only highlight his technical expertise but also reflect a commitment to improving energy efficiency and performance. As technologies continue to evolve, Slack's work will likely inspire future advancements in power conversion and management.
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.