A fundamental task which almost any instrumentation system must be capable of performing is the measurement of voltages or currents. Generally speaking, electrical signals are time-varying quantities. The speed with which currents or voltages change ultimately determines the choice of measurement circuit.


Input Voltage Clock Cycle Reference Voltage Clock Pulse Schmitt Trigger 
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  1. [1]
    Daniel H. Sheingold, editor, Analog-Digital Conversion Handbook (Analog Devices, Inc., Norwood, MA, 1972).Google Scholar
  2. [2]
    William D. Stanley, Operational Amplifiers with Linear Integrated Circuits (Merrill/Macmillan, New York, 1994); see pp. 316–324.Google Scholar
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    Analog Devices, Norwood, MA.Google Scholar
  4. [4]
    Datel, Inc., Mansfield, MA.Google Scholar
  5. [5]
    See article in Hewlett-Packard Journal, April 1989, p. 8.Google Scholar

Copyright information

© Springer Science+Business Media New York 2001

Authors and Affiliations

  • James A. Blackburn
    • 1
  1. 1.Department of Physics and ComputingWilfrid Laurier UniversityWaterlooCanada

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