Company Filing History:
Years Active: 1986-1992
Title: Yu C Kao: Innovator in Power Electronics
Introduction
Yu C Kao is a notable inventor based in Pittsburgh, PA (US), recognized for his contributions to power electronics. He holds 2 patents that showcase his innovative approach to enhancing electronic devices.
Latest Patents
One of his latest patents is for a Variable Gain Switch. This invention involves a power bipolar transistor that incorporates a MOSFET within the base region. The MOSFET is designed to short the transistor's emitter and base regions together when the bipolar transistor is in an off condition, particularly under a large base to collector voltage. Additionally, the bipolar transistor features floating guard rings, with the MOSFET gate connected to one of these rings. This design allows the MOSFET to turn on and provide an emitter to base short when the depletion region reaches the floating guard ring. Another significant patent is for a Triggering Method for Light Triggered Thyristors. This method utilizes a light source to provide background excitation of carriers in the amplifying gate areas of the thyristor before triggering. The background excitation is kept at a low level to avoid triggering the device prematurely or causing excessive leakage current. At the desired moment, a second light signal is employed to trigger the thyristor.
Career Highlights
Throughout his career, Yu C Kao has worked with prominent companies such as Powerex Corporation and Westinghouse Electric Corporation. His experience in these organizations has contributed to his expertise in the field of power electronics.
Collaborations
Yu C Kao has collaborated with notable individuals in his field, including Scott G Leslie and Donald Lynn Miller. Their joint efforts have likely fostered innovation and advancements in their respective projects.
Conclusion
Yu C Kao's contributions to power electronics through his patents and collaborations highlight his significant role as an inventor. His work continues to influence the development of advanced electronic devices.