Taking a circuits class with no breadboarding or solder experience has been a huge push away from comfort for me this semester.
It’s been that feeling of wondering, “Jeez, am I the last person in this class to get this?”
Slowly, more than I realize, I’m gaining confidence with reading schematics, designing a breadboard, also debugging.
I wanted to share some of the lab projects from the semester. Some circuits took me weeks just to get right. None of them worked perfectly on the first try. I think that’s really important!
The class emphasizes making things over knowing perfect knowledge, so I don’t know how many of them work in detail. Some black boxes will remain black boxes.
if you ever code something that “feels like a hack but it works,” just remember that a CPU is literally a rock that we tricked into thinking
— daisyowl (@daisyowl) March 15, 2017
1 – variable voltage divider
This is a power supply. It takes in AC current and using a transformer unit, transforms that current into DC.
The AC is first directed through the big transformer, which I soldered to the AC wire (and almost electrocuted myself, whoops)
A bridge rectifier made up of diodes forces the current to be (+) instead of fluctuating between (+), ground, and (-).
There’s a massive capacitor storing the charge. I can turn the potentiometer and I can control how much electricity comes out the top two pins.
I use this one as a power supply when testing circuits now. Really satisfying that it works.