Patents by Inventor Ray Alker

Ray Alker 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).

  • Voltage measuring apparatus
    Publication number: 20020067172
    Abstract: Apparatus for measuring voltage across an isolation barrier. The apparatus includes a voltage input and a voltage output and an opto-isolator provided between the voltage input and voltage output. Processing means are provided at the voltage output to measure and/or monitor pulse width. A Circuit arrangement including two transistors and two resistors is provided to allow a substantially constant current to flow through the opto-isolator.
    Type: Application
    Filed: December 4, 2001
    Publication date: June 6, 2002
    Applicant: PACE MICRO TECHNOLOGY PLC.
    Inventor: Ray Alker