Stabilized Linear 2,5A 12V Power Supply

The other day I built this power supply out of components I had lying around. In particular I had this enclosure sitting on the shelf for years now and wanted to finally put it to use and also a toroidal transformer I also had sitting in the shelf.

Unfortunately I didn’t take any pictures while building it only after the fact.

Here is the schematic, fairly standard and self-explanatory, it uses a 2N3055 transistor and a Zener diode. Though I changed the smoothing capacitor for an even higher valued one on the actual build. Power Supply Schematic


Power Supply Inside Power Supply Inside Power Supply Rear Power Supply Front