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    2021

  • 2021-05-11
    Julia Notes

    Notes on using Julia and Pluto.

    Additional Julia and Pluto information

    • Julia Documentation
    • Julia Cheat Sheet
    • MATLAB–Python–Julia cheatsheet — Cheatsheets by QuantEcon documentation
    • Plotting Docs
    • Julia Blogs
    • MIT Class Using Pluto
    • A Guide to Building Reactive Notebooks for Scientific Computing With Julia and Pluto.jl | by Connor Burns | The Startup | Dec, 2020 | Medium
    • An introduction to Pluto
    • Pluto.jl Documentaation
    • Reactive Data Analysis with Julia in Pluto Notebooks

    Tutorials

    • My New Workflow with Julia 1.0. A practical guide to how you can work… | by Erik Engheim | Medium
    • Julia’s Most Awesome Features. Five of my favorite features in the… | by Emmett Boudreau | Towards Data Science
    • Julia by Example
    • Think Julia
    • Julia Commands
    • Frontmatter | Julia Programming for Operations Research | Softcover.io
    • U Penn Julia
    • Data Science with Julia

    Using the Julia REPL

    When I started using Python, I didn’t use the Python REPL much. I took a more conventional approach to running Python as a scripting utility using executable files. When I started using Julia, I found the REPL much more valuable than Python’s. It might be the same, however, I’ve found myself using Julia via the REPL far more than as a scripting language. A couple of pointers:

  • 2021-03-29
    Analyzing Circuits Using the Espotek Labrador: DC Sweep

    Using the Labrador and a DMM, perform a DC sweep of an inverting amplifier. From our previous lab post we saw the simulation values for a DC Sweep. In this lab, we’ll use the Labrador along with a DMM to determine if our measured values match those of the simulation.

    Build the Circuit on a Breadboard

    1. Using this circuit, implement on a breadboard so it is similar to the image below.
      Inverting amplifier with bias diagram
    2. Parts List:
      • LM358 Operational Amplifier
      • Frequency Generator (Espotek Labrador or ADALM1000)
      • 9V power supply
      • 2k ohm resistor (or 10k potentiometer)
      • 5k ohm resistor (or 10k potentiometer)

    Notes:

    1. Vo is pin 1 on the chip
    2. Vn is pin 2 on the chip
    3. Vp is pin 3 on the chip
    4. Make sure you attach 9V to pin 8 and Ground to pin 4
      Inverting amplifier with bias breadboard

    Using a Potentiometer as a variable voltage source

    Notice the potentiometer on the right on the breadboard. There are three terminals:

Copyright © 2025 Lief Koepsel
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