Patents by Inventor Chang Ko Wei

Chang Ko Wei 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).

  • Printed circuit board testing apparatus
    Patent number: 6566901
    Abstract: The printed circuit board testing apparatus for use to test the short circuit in an induction element is provided. The apparatus includes: a signal generating device for providing a first signal; an inducing device for performing a mutual inductance effect with the induction element and making the first signal to produce a second signal in response to the mutual inductance effect; a signal converting device for converting the second signal into a direct current signal and obtaining a peak value voltage from the direct current signal; a signal processing device for outputting a controlling signal according to the relationship between the peak value voltage and a reference voltage; and a warning device for generating a warning signal in response to the status change of the controlling signal when a relative voltage standard is not identical to a predetermined voltage standard, thereby judging whether there is any short circuit formed.
    Type: Grant
    Filed: October 3, 2001
    Date of Patent: May 20, 2003
    Assignee: Delta Electronics, Inc.
    Inventors: Lee Chin Ta, Chang Ko Wei
  • Printed circuit board testing apparatus
    Publication number: 20020180456
    Abstract: The printed circuit board testing apparatus for use to test the short circuit in an induction element is provided. The apparatus includes: a signal generating device for providing a first signal; an inducing device for performing a mutual inductance effect with the induction element and making the first signal to produce a second signal in response to the mutual inductance effect; a signal converting device for converting the second signal into a direct current signal and obtaining a peak value voltage from the direct current signal; a signal processing device for outputting a controlling signal according to the relationship between the peak value voltage and a reference voltage; and a warning device for generating a warning signal in response to the status change of the controlling signal when a relative voltage standard is not identical to a predetermined voltage standard, thereby judging whether there is any short circuit formed.
    Type: Application
    Filed: October 3, 2001
    Publication date: December 5, 2002
    Applicant: Delta Electronics, Inc.
    Inventors: Lee Chin Ta, Chang Ko Wei