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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. Long duration timers - Notes for beginners

    Tips for beginners on long duration timers.
  2. Got a question about driving LEDs?

    A list of common anwers and links to useful documentation on driving LEDs.
  3. How to take photos of circuit boards

    Hints and tips on how to take optimal photos of your circuit boards
  4. LTSPICE Shortcuts

    Time-saving Keyboard Shortcuts for LTSpice
  1. Component suppliers

    Names and web addresses for companies that supply electronic components
    Updated:
    Jul 23, 2014
  2. Logic gates

    Explanations about logic gates and what they can be used for
    Updated:
    Jul 16, 2014
  3. Electronic power and resistance rules

    Power and resistance rules you need to know (Further edits ongoing)
    Updated:
    Jul 10, 2014
  4. 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.
    Updated:
    Jul 6, 2014
  5. Do I need a heatsink? How big?

    A simple inroduction to heatsinking components
    Updated:
    Jul 6, 2014
  6. Saturation in transistors (BJTs) - why and how

    The reason you would saturate a BJT, and how to calculate base current and resistor values
    Updated:
    Jul 6, 2014
  7. Photos with phones

    How to take a good closeup image with your phone
    Updated:
    Jul 5, 2014
  8. Op Amp Stability

    Information and solutions to stability problems you can get with op-amps
    Updated:
    Jun 4, 2014
  9. PCB prototype manufacturing calculator

    Find the least expensive PCP manufacturer for your hobby project
    Updated:
    Jun 4, 2014
  10. Ground in a multiphase system

    How to simulate e.g. a 3 phase system
    Updated:
    May 13, 2014
  11. Adding new components to LTSPICE

    add models and subcircuits from other sources
    Updated:
    May 13, 2014
  12. Going digital

    Digital simulation in LTSPICE
    Updated:
    May 13, 2014
  13. Managing temperature in LTSPICE

    Global and local temperatures, temperature dependent components
    Updated:
    May 13, 2014
  14. Simulating (absolutely) symmetrical circuits

    Ideal components lead to unexpected simulation results
    Updated:
    May 13, 2014
  15. Simulating waveforms

    PWM, arbitrary waveforms, surge pulses, fast transients, noise
    Updated:
    May 13, 2014
  16. What if?

    Scenario analysis and Monte Carlo analysis
    Updated:
    May 13, 2014
  17. How to deal with (LT)SPICE error messages

    How to deal with (LT)SPICE error messages
    Updated:
    May 13, 2014
  18. Tips and tricks

    Tips, tricks, caveats, pitfalls
    Updated:
    May 13, 2014
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