Jess2

Member Since: August 30, 2009

Country: United States

  • News - December Caption Contest | about 4 months ago

    SparkFun’s own Mad Hatters.

  • News - ElectriCute: LED String L… | about 6 months ago

    Lumen output of your light source is going to be the factor that matters, visibility in daylight would most likely require lumens in several orders of magnitude greater than the methods displayed in this video.

  • | about 8 months ago

    It sounds like the water piping analogy for electricity is very popular. Going along with that analogy, my favorite for a capacitor has been the spring loaded piston or spring loaded accumulator. Most people can see as the cylinder fills, spring gets tighter and it’s resistance to filling increases; or in other words as the cylinder fills up, the water also flows in more slowly due to the spring getting stiffer. You can also explain you need a spring rated for the pressure or voltage as to not bottom out the cylinder or capacitor and damage it. Hence why your capacitor needs to be rated for the voltage. You can also explain ESR with the above describing a plate with a hole in it located at the inlet for a resistor. I think someone had already mentioned it, but I’ve had good success explaining resistors as a plate with a hole in it, and varying the resistance with the size of the hole drilled in the plate. Obviously the bigger the hole, the less resistance.

  • News - July Caption Contest | about 10 months ago

    Reflow softly, and carry a big iron.

  • News - July Caption Contest Time… | about 2 years ago

    Let this be a lesson to all mouthy caterpillars - Alice

  • News - March Caption Contest | about 2 years ago

    HeHe. The Cat’s in trouble now.

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