Variable Power Supply!
Updated 6/8/2024
I built this cause I really needed a variable voltage/current power supply. It outputs low-impedance
power that can be controled with the voltage knob from 0-30v and is current limited from 0-??A (lights
on fire at high amperage).
I designed and printed the wireframe enclosure. I bought the multimeter module off Amazon. The rest is
made from scratch with discrete BJT transistors and voltage regulators! With the two small heatsinks I
added, it can output surprisingly stable and powerful DC!
I built this on a proto-board. The wiring was quite a challenge to keep tidy!
I built this so it fits perfectly into a breadboard, powering the power rails automatically. You can also opt to use the aligator clips instead.
Here's an example of me powering a circuit with the device.
(This goes poorly because I built the breadboard circuit wrong)