36V Bench PSU by jscheiben

Last crawled date: 3 years, 3 months ago

This is my design for a 36V 5A max bench PSU. I did this project just because i wanted to try and think it turned out well.
This project was done just to see if I could do it as i'm just getting back into electronics and soldering. As the pictures show it went together well with pretty decent accuracy on the output. I have included the .stp file so people can alter it to suit their needs. There are 2 main parts(Base, Lid) with a third file with small 3mm spacers. I made the spacers as my screws were too long for the holes and did not want to print the base out again. If you find your screws are too long try using the spacers.
The parts i used are;
UCTRONICS Numerical Control (dsp5005)https://www.amazon.com/gp/product/B01LWXAC5E/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&psc=1
GDSTime 80x80x10mm radiator fan(12V)
https://www.amazon.com/gp/product/B00N1Y4SGY/ref=ppx_yo_dt_b_asin_title_o00_s01?ie=UTF8&psc=1
URBEST IEC320 C14 inlet plug
https://www.amazon.com/gp/product/B00NWO68JI/ref=ppx_yo_dt_b_asin_title_o01_s00?ie=UTF8&psc=1
4mm Banana plug sockets
https://www.amazon.com/gp/product/B07BGT31YR/ref=ppx_yo_dt_b_asin_title_o01_s00?ie=UTF8&psc=1
100-240v AC to 36v DC module
https://www.amazon.com/gp/product/B074CJ8GNP/ref=ppx_yo_dt_b_asin_title_o01_s00?ie=UTF8&psc=1
3-40v DC-DC buck converter
https://www.amazon.com/gp/product/B06XZ1DKF2/ref=ppx_yo_dt_b_asin_title_o01_s01?ie=UTF8&psc=1
other misc items i used are spade connectors(for AC-DC converter AC input and ground, heat shrink)
Screw list;
Lid M3, fan i used M4 just long enough to thread the nut on to keep it from touching the heatsyncs of the DC converter. DC converter and Plug M4, buck M3. Utilize matching nuts for plug and fan.
Those are the main components and cost was approx $78US based on a single buck converter and single set of banana plugs. The plug is almost identical to the one found on most 3D printers and can utilize a standard 3 pin computer power cord.
I may add an inline fuse between the DC board output and control display but for now it's a direct wire. If anyone wants a wiring diagram let me know and i'll do one up but it's quite simple.
Also the clearance between the plug rear pins and DC converter is VERY tight which is why I included the .stp file for people to alter the design. After printing and assembling the DC board can be moved towards the front quite a bit adding more room around it.
If you make this I would like to see it and would love to see any remixes.