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Related Experiment Videos

Nonlinear waveform generation.

L J Goldstein1, E B Rypins

  • 1Department of Surgery, University of California, Irvine Medical Center, Orange 92668.

Computer Methods and Programs in Biomedicine
|March 1, 1990
PubMed
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Researchers created analog logic circuits for Boolean functions (AND, OR, NOT) and a voltage comparator. These circuits simplify modeling physiologic systems within existing analog simulations.

Area of Science:

  • Biomedical Engineering
  • Electrical Engineering
  • Computational Biology

Background:

  • Physiologic system modeling often requires complex simulations.
  • Existing analog circuit modeling lacks efficient digital logic integration.
  • Boolean functions and comparators are fundamental for computational tasks.

Purpose of the Study:

  • To develop analog SPICE subcircuits for Boolean logic (AND, OR, NOT).
  • To create a voltage comparator for use in waveform generation.
  • To enable digital logic functions within analog circuit simulations for physiologic modeling.

Main Methods:

  • Developed three analog SPICE subcircuits implementing AND, OR, and NOT Boolean logic.
  • Derived a voltage comparator circuit.

Related Experiment Videos

  • Integrated these analog circuits to perform digital functions within a composite waveform generator.

    • Main Results:

    • Successfully implemented analog equivalents of AND, OR, and NOT gates.
    • Developed a functional voltage comparator circuit.
    • Demonstrated the capability of analog circuits to perform digital logic operations.

    Conclusions:

    • The developed analog logic subcircuits simplify the modeling of physiologic systems.
    • These circuits can be seamlessly integrated into existing analog simulations.
    • This approach enhances the efficiency and capability of analog circuit-based modeling.