I got someone’s old 13.4V 5A power supply project off a batch of electronics stuff from eBay and figured to give it a revamp. This is the unit as I got it:
Basically a LM7812 driving two TESLA KU607VC TO-3 transistors. The LM7812 is offset by a zener diode to account for the voltage drop of the KU607VC transistors.
I did a total overhaul of the circuit I switched out some components (especially the capacitors), added a current meter and put it in a proper enclosure. I also added a primary fuse (previous thing was missing one) and added in a polyfuse on the secondary side.
