Location History:
- Sandy Beds, GB (1997 - 2000)
- Wrestlingworth, GB (1982 - 2001)
Company Filing History:
Years Active: 1982-2001
Title: Innovations of David A Cross
Introduction
David A Cross is a notable inventor based in Wrestlingworth, GB. He has made significant contributions to the field of electrical engineering, holding a total of 9 patents. His work primarily focuses on power conversion technologies, showcasing his expertise and innovative spirit.
Latest Patents
One of his latest patents is the "Offset Resonant ZVS Forward Converter." This invention features a forward converter circuit that generates a zero volt switching (ZVS) signal across the power switch. The design includes a series combination of a switch and shunt inductance, which are connected in parallel across the primary winding of the power transformer. An offset capacitor is placed in series with the shunt inductance, working in conjunction with a control circuit to couple the magnetizing current from the primary winding. This innovative approach allows for zero volt switching of the power switch at both turn-on and turn-off, while also resetting the core of the power transformer without the need for a tertiary winding. Additionally, the circuit enhances the protection of the power switch without relying on an active clamp.
Another significant patent is the "Line Harmonic Correcting Flyback Power Converter." This invention achieves effective harmonic correction without frequency, power, or voltage limitations in a single-stage DC-to-DC converter. It disconnects the bulk capacitor during low voltage conditions and employs various phase and cycle modulation techniques associated with a switchable auxiliary transformer winding. This design controls the voltage of the bulk capacitor and manages the level of harmonics generated based on the AC output voltage. The auxiliary winding can also function as a clamp winding, ensuring full ZVS conditions for both the auxiliary winding switch and the primary winding switch.
Career Highlights
David A Cross has worked with several prominent companies throughout his career, including Astec International Limited and Xerox Corporation. His experience in these organizations has contributed to his development as an inventor and has provided him with valuable insights into the industry.
Collaborations
One of his notable coworkers is Neal George Stewart. Their collaboration has likely fostered innovative ideas and advancements in their respective fields.
Conclusion
David A Cross is a distinguished inventor whose work in power conversion technologies has led to multiple patents and significant advancements in electrical engineering. His innovative designs continue to influence the industry and showcase the importance of creativity in technology.