Simple Bench Power Supply

Simple Bench Power Supply

It is great to have a bench power supply that provides 4 different voltages at the same time (see my other thing, 'Another ATX bench power supply' here)... BUT if you only need a simple power supply AND you happen to have an old Dell 19.5V laptop power supply in your drawer... then this is a simple - easy to build - bench power supply for you.

Description

I installed everything in a 3D printed box (bottom, top, front and back panel plus a small cable clamp). This box has the same 'footprint' as the ATX power supply mentioned above. I added a couple of extra elements :

Parts needed for this project


Dell 19.5V laptop power supply here or in your drawer.
DPS5005 adjustable power supply here.
LM2596 buck convertor here.
Switch (230V) like this one
Binding posts (2 red - 2 black) here.
Terminal/choc block (at your local DIY shop)
Rectangular LED (2x5x7 mm) and a 220 Ohm resistor here.
10 M3x10mm bolts (6 to assemble top and