Patents by Inventor Lai S. Chan

Lai S. Chan has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Flyback power converter with spike compensator circuit
    Patent number: 5517397
    Abstract: An improved electrical power converter is disclosed. The electrical power converter utilizes a pulse width modulator responsive to the voltage across a tertiary winding of the power transformer. The electrical power converter includes a feedback control circuit for providing a regulating voltage to the pulse width modulator that is substantially proportional to the voltage across the tertiary winding with the voltage spikes caused by any leakage inductance in said power transformer removed. The feedback control circuit includes a spike compensator circuit that utilizes leakage inductance produced voltage spikes to compensate for output voltage degradation due to heavy loads.
    Type: Grant
    Filed: December 6, 1994
    Date of Patent: May 14, 1996
    Assignee: Astec International, Ltd.
    Inventors: Eng H. Quek, Lai S. Chan