Mini Lab Power Supply

Some time ago I saw Turbokeu’s his mini power supply, and I thought “I can build a smaller one”. A month later I got an enclosure from a 12Vdc => 230Vac inverter (Thanks Jeroen!). This case was perfect for my mini psu. The volume off Turbokeu his supply is 1323cm³and mine will be 588cm³.

The circuit I used is based on an article Elektor published in march 98 (Called “Regelbare voeding” in Dutch). The displays are DPM125 witch I bought at an electronics flea market. The power supply delivers 3-24V at 1A. But this is only for short times because the case is used as heat sink.

Circuit mainboard:

Circuit display supply:

Pcb mainboard:

Pcb display supply:

Part list (only from the mainboard):

Pictures:

The top side of the mainboard:

Bottom side:

Bottom side of the display supply:

Top side:

Here you can see how much space is left:

Closed:

2 pictures with my hand as size reference.