Patents by Inventor Andrew C. Davies

Andrew C. Davies 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).

  • Current measurement circuits
    Patent number: 5378998
    Abstract: A circuit for measuring current flowing along a line including a resistance has two transistors with their emitters connected to the line on opposite sides of the resistance and with their collectors connected to a zero voltage rail via respective resistors. The bases of the transistors are connected together so that one transistor controls current flow through the second. The voltage across the resistor connected to the second transistor is representative of current flow in the line.
    Type: Grant
    Filed: November 2, 1993
    Date of Patent: January 3, 1995
    Assignee: Smiths Industries Public Limited Company
    Inventor: Andrew C. Davies