This is a triple laboratory bench power supply that uses DC/DC DPS modules. The bill of material is available at the end of the description.
The front panel is tricky to print. Use your slicer software to print it the following way:
- import PS_Face_White_1.STL and cut to keep only the first layer (0.16mm) then slice and print,
- import PS_Face_Color.STL and cut to keep only the first layer (0.16mm), then split the model and keep only what you need for a specific color (green, red, yellow, and blue) then slice and print,
- redo the same for all four colors,
- import PS_Face_Black.STL and cut to keep only the two first layers (0.32mm), then split the model and keep only the black parts (including the markings) then slice and print,
- import PS_Face_White_2.STL, slice and print. The model is already raised to account for the previoulsy printed layers. Midway you can switch back to black if you want using pause/resume on the printer, but it's not necessary.
You have to make sure that each time you import the model in your slicer exactly at the same position. And also make sure to keep what was previously printed on the bed until the end of the last step. Never use support. It should come out nicely printed in multiple color. I've used PrusaSlicer for slicing my own gcodes.
The rest of the model (PS_Back.STL, PS_Bottom.STL, PS_Top.STL, twice PS_Inside.STL, and twice with mirroring on X axis PS_Side.STL) can be printed easily once at a time, flat with the external face lying on the bed.
If you want a basket on the top to keep all your wires and accesories, just use PS_Basket.STL instead of PS_Top.STL.
You will need self tapping M3x6 screws, 44 of them to assemble the box, plus 24 of them to fix the electronics inside. The 12V2A module for the fans is hot glued since I forgot to add specific mounts... And the 92mm fans uses their own screws.
Also, depending on the banana socket you want to use, you'll need to drill the holes a bit larger on the front panel, as I designed them a bit too small.
I've included a rough shematic for the wiring of all parts.
Bill of materials:
- 1x AC monitor module,
- 1x DPS3012 module,
- 2x DPS3005 module,
- 1x 12V1A AC/DC module,
- 3x 12V13A AC/DC module,
- 2x 36V5A AC/DC module,
- 1x Power socket with fuse, make sure to also get the power cord that you need for your country,
- 1x Bundle of power switches,
- 3x Bundle of color banana plugs,
- 2x 92mm silent fans,
- Colored silicone wires: black, red, blue, yellow, and green. Usualy, by convention, in DC we use red for positive, black for negative. And in AC we use blue for neutral, yellow for earth, and something else (like red or green) for the phase. In that application, color doesn't really matter, but make sure to use at least 12AWG for DC and 16 or 18AWG for AC, not smaller.
- Bundle of self tapping screws,
- If you need them, bundle of banana plug cables and bundle of banana plug to aligator clip cables,
- And everything you need to solder the wires...
ZeblodS
