Company Filing History:
Years Active: 1997-1998
Title: Yevgeny Shafir: Innovator in Dimmer Technology
Introduction
Yevgeny Shafir is a notable inventor based in Jamaica Estates, NY (US). He has made significant contributions to the field of electrical engineering, particularly in the development of dimmer technology. With a total of two patents to his name, Shafir's work has had a meaningful impact on the industry.
Latest Patents
Shafir's latest patents include an innovative design for an asymmetrical AC trigger simulation. This invention teaches a dimmer that incorporates an alternating current (AC) trigger exhibiting asymmetrical electrical characteristics. The design effectively eliminates the undesirable snap-on hysteresis effect commonly associated with conventional dimmers that utilize symmetrical AC triggers, such as diacs and silicon bilateral switches (SBS). One embodiment of this invention employs a zener diode to create the necessary asymmetry. During one polarity of the AC source, the breakover voltage of the trigger is increased, which forces the trigger to break over at a later time in the AC cycle than it would with a symmetric trigger. This design compensates for the charge dumping of the phase control capacitor into the gate of the triac, which would otherwise lead to the snap-on hysteresis effect.
Career Highlights
Yevgeny Shafir is currently associated with Leviton Manufacturing Company, Inc., a leading manufacturer in the electrical industry. His work at Leviton has allowed him to further develop and refine his innovative ideas in dimmer technology.
Collaborations
Shafir has collaborated with notable colleagues, including Bernard J. Gershen and Alfred J. Lombardi. These collaborations have contributed to the advancement of his projects and the overall innovation within the company.
Conclusion
Yevgeny Shafir's contributions to dimmer technology through his patents demonstrate his commitment to innovation in electrical engineering. His work continues to influence the industry and improve the functionality of electrical devices.