Company Filing History:
Years Active: 1996-2016
Title: Innovations of Benjamin Alexandrovich
Introduction
Benjamin Alexandrovich is a notable inventor based in Brookline, MA (US). He has made significant contributions to the field of LED technology, holding a total of 11 patents. His work focuses on advanced dimming control techniques that enhance the performance and efficiency of LED drivers.
Latest Patents
Among his latest patents, Alexandrovich has developed innovative methods for dimming LED strings. One of his key inventions is the "Hybrid dimming control techniques for LED drivers." This patent discloses techniques for dimming LED strings using frequency modulation (FM) dimming and burst control dimming. At high brightness levels, FM dimming reduces the current through LED strings by increasing the switching frequency of pulses within a pulse train of an AC current source. Conversely, at low brightness levels, burst control dimming decreases the current by reducing the duty cycle of the pulse train. Additionally, he has combined FM dimming with frequency hopping to expand the number of available frequency steps.
Another significant patent is the "Hybrid dimming control techniques for lighting drivers." This invention allows for the independent control of individual LED strings driven from a single AC current source. The lighting driver circuit includes a DC-AC inverter with series resonance, which splits the current into multiple currents for driving various LED assemblies. Current splitting transformers may provide galvanic isolation to the LED assemblies, and a microcontroller determines the amplitude of the current from the AC source. This innovation enables precise control over multiple LED assemblies through independent activation based on the duty cycle of multiple PWM signals.
Career Highlights
Benjamin Alexandrovich is currently employed at Osram Sylvania Inc., where he continues to push the boundaries of LED technology. His work has significantly impacted the efficiency and functionality of lighting systems.
Collaborations
Throughout his career, Alexandrovich has collaborated with esteemed colleagues such as Valery A Godyak and Robert B Piejak. These collaborations have further enriched his contributions to the field of LED technology.
Conclusion
Benjamin Alexandrovich is a pioneering inventor whose work in LED dimming control techniques has led to numerous patents and advancements in lighting technology. His innovative approaches continue to shape the future of efficient lighting solutions.