Category Archives: Inspiration

Just train tired

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Justin Sung’s D-F-U-Z method for Thought Action Defusion helps to decouple your productivity from your motivation:

  1. Distinguish (between feelings, thoughts, and actions)
  2. Fake (pretend you’re not feeling tired or lazy, even if you are)
  3. Uptime (increasingly spend longer and longer in the thought-action defusion state)
  4. Zone (create a distraction-free environment you can be focused in)

Voltmeters and ammeters

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In this photo we see three voltmeters (across the top) and five ammeters (across the bottom) attached to a voltage divider connected to a load.

30 V is applied then 2 mA flows through R1 and then splits with 1 mA going through R2 and 1 mA going through Rload. 20 V drops across R1 and there is 10 V across R2 and Rload.

Five ammeters and three voltmeters connected to a voltage divider attached to a load

The circuit on the left in the schematic below is the one being tested. In this case R1, R2, and Rload are all 10 kΩ. As R2 and Rload are connected in parallel their effective resistance is 5 kΩ. R1 being 10 kΩ gets two thirds of the voltage because R2 || Rload is 5 kΩ getting one third of the 30 V being 10 V.

The schematic of the voltage divider being tested

The Bang Preventer – aka DIY Current Limiter with isolation transformer

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I asked Tony359 about his current limiter and he referred me to the video below in which he explains his home made contraption. Very cool. I think I should make one of these.

Update: I also found a video covering a similar topic:

The voltmeter used in the second design is this one: Digital AC Voltmeter.

Oh, and here’s another one!