Patents by Inventor Ching-Sheng Li

Ching-Sheng Li 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).

  • Driving Circuit to Avoid Reverse Current for Soft Switching DC Motor
    Publication number: 20070221997
    Abstract: A driving circuit includes a power supply, an input capacitor, a Hall sensor, a first amplifier, a second amplifier, a full-bridge driver circuit, and a first operational amplifier. The input capacitor is coupled to the power supply. The input end of the first amplifier and the second amplifier is coupled to the output end of the Hall sensor. The control end of the full-bridge driver circuit is coupled to the output end of the first amplifier and the output end of the second amplifier. The first operational amplifier includes a first input end for receiving a first reference voltage and a second input end coupled to the first output end of the full-bridge driver circuit.
    Type: Application
    Filed: May 15, 2006
    Publication date: September 27, 2007
    Inventors: Kun-Min Chen, Shen-Min Lo, Ching-Sheng Li, Chen-Yu Yuan