Nice power supply. I've got an eerily similar one that I built from a lm317 voltage regulator.
If you don't need to supply very much amperage, the LM317 would be a cheaper, easier, safer drop-in replacement for the LM338 in this design. It's output short circuit protected and current limited to 1.5A.
Other than that, your power supply is identical to mine. Same 28.5V max potential difference and same regulator protection diodes and everything!
That heatsink is more like Princess Amidala than Princess Leia.
Nickelplate1 2 weeks ago
Nice power supply. I've got an eerily similar one that I built from a lm317 voltage regulator.
If you don't need to supply very much amperage, the LM317 would be a cheaper, easier, safer drop-in replacement for the LM338 in this design. It's output short circuit protected and current limited to 1.5A.
Other than that, your power supply is identical to mine. Same 28.5V max potential difference and same regulator protection diodes and everything!
neveragaineverever 1 month ago
@neveragaineverever Awesome!! Great minds think alike!
whisk0r 3 weeks ago
@whisk0r fair enough :)
pyroesp 1 month ago
@pyroesp We'll be posting an update on this :D
whisk0r 1 month ago
very nice
brigfiche 1 month ago
Your fuses are on the wrong side of the transformer.
You'd want to protect the voltage regulator.
What you usually would do is put a 1A fuse (if you want to protect it if it goes higher than 1A) after the capacitor.
The current drawn from the 120 AC is much much lower than the current coming out of the voltage regulator.
pyroesp 1 month ago
@pyroesp The fuses here are to protect against against a transformer short causing a fire. You could indeed also add a fuse after the regulator.
whisk0r 1 month ago
Bugs are undocumented features. Since your LED feature is documented, it can't be a bug! :D
reltham 1 month ago