Patents Assigned to Oliver J. Nilsen (Australia) Limited
  • Electrical energy analyzer
    Patent number: 4978911
    Abstract: An electrical energy analyzer including a computer for monitoring energy consumption and supporting ripple control is provided with improved A/D converter resolution by applying a 1/2 LSB square wave offset signal to the non-inverting input of a differential amplifier for amplifying a current shunt voltage. The amplifier output has limited filtering to allow a 1/2 to 1 LSB random signal to be applied to the measurement signal entering the A/D converter.
    Type: Grant
    Filed: February 23, 1989
    Date of Patent: December 18, 1990
    Assignee: Oliver J. Nilsen (Australia) Limited
    Inventors: Phillip J. Perry, John A. D. Meldrum, Jordon Metlikovec, Michael J. Bauer, Clive S. White