Patents Represented by Attorney J. J. Blatt
  • Patent number: 4462018
    Abstract: A transducer operating on the strain gauge principle having integral temperature compensation and calibration resistors is disclosed. In the presently preferred embodiment, a silicon dioxide layer is disposed on a silicon substrate. Platinum alloy strain gauge resistors are disposed on the silicon dioxide layer and form a Wheatstone bridge circuit configuration. Laser trimable chromium nitride, platinum alloy and gold temperature compensation and calibration resistors are formed on the silicon dioxide layer from the same films used to form the strain gauge, adhesion layers, conductors and bonding pads, to permit the transducer to be calibrated such that its electrical characteristics are in conformance to specified tolerances when the transducer is subjected to temperature variations.
    Type: Grant
    Filed: November 5, 1982
    Date of Patent: July 24, 1984
    Assignee: Gulton Industries, Inc.
    Inventors: Maurice Yang, Carlyle A. Mounteer