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  1. Using a bipolar transistor to turn a load on and off
    For situations when your microcontroller (or whatever) can't do it on its own. - by (*steve*)
    Updated: Jul 6, 2014
  2. Do I need a heatsink? How big?
    A simple inroduction to heatsinking components - by (*steve*)
    Updated: Jul 6, 2014
  3. PCB prototype manufacturing calculator
    Find the least expensive PCP manufacturer for your hobby project - by Harald Kapp
    Updated: Jun 4, 2014
  4. How to take photos of circuit boards
    Hints and tips on how to take optimal photos of your circuit boards - by KrisBlueNZ
    Updated: May 5, 2014
  5. Adding new components to LTSPICE
    add models and subcircuits from other sources - by Harald Kapp
    Updated: May 13, 2014

View All Featured Resources

  1. Got a question about driving LEDs?

    A list of common anwers and links to useful documentation on driving LEDs.
  2. Long duration timers - Notes for beginners

    Tips for beginners on long duration timers.
  3. LTSPICE Shortcuts

    Time-saving Keyboard Shortcuts for LTSpice
  4. How to take photos of circuit boards

    Hints and tips on how to take optimal photos of your circuit boards
  1. Updated:
    Feb 21, 2021
  2. Updated:
    Feb 21, 2021
  3. Updated:
    Feb 18, 2021
  4. (Old) software at the Internet Archive

    (Old) software at the Internet Archive
    Updated:
    Jan 2, 2021
  5. Updated:
    Nov 10, 2020
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    Oct 10, 2020
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    Aug 7, 2020
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    Aug 7, 2020
  9. Updated:
    Jun 5, 2020
  10. Updated:
    May 20, 2020
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    May 20, 2020
  12. Updated:
    Mar 2, 2020
  13. Micro-Cap 12

    Micro-Cap simulator is now free
    Updated:
    Jan 10, 2020
  14. Selecting a suitable component

    Finding a component that suits your needs at the right price
    Updated:
    Jan 5, 2019
  15. Resistors, Capacitors, Zener diodes... Why the funny values?

    An explanation of the E-series and why those funny values are used.
    Updated:
    Mar 18, 2017
  16. ako: A Kind Of (aliasing components)

    Stepping device parameters or stepping complete device models
    Updated:
    Feb 21, 2017
  17. Simulating time variable resistors

    Simulate time variable resistors in LTSPICE using a voltage source as controller
    Updated:
    Feb 8, 2017
  18. Simulating sawtooth and triangular waveforms

    simulate sawtooth and triangular waveforms in LTSPICE using a PULSE source
    Updated:
    Jun 10, 2016
  19. Power Supplies - Common Terms and Limitations

    What is a power supply (source) and how can I control the voltage and current?
    Updated:
    Feb 23, 2016
  20. Electronics Talk - interesting interviews and shows

    Interesting videos with/on Electronics Legends
    Updated:
    Feb 17, 2016
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