4.5 to 25volt 15Amp power supply circuit

[der_fisherman]

Sounds interesting, tho if it was in Elektor its a copyrighted design... but you could post up the gist of it for information.... personally, with the cost of PSUs on eBay in the £20 region its hardly worth building you own in many cases... I have a 0 - 20v bench supply @ 5A I built 20y ago, when I had access to unlimited MIL spec parts lol, but hardly ever use it, since a fixed 5v and 12v supply suffices for most things PIC-based these days. Rarely do any discrete analogue stuff now....

The complete article is attached here. The PCBs are still available via the companies that Elektor uses themselves or you can get one made.
The reason that I build my own is that they are far simpler to repair if need be because I know how it works!!! Not that I have needed to up to now.
Bought Switched Mode Power Supply (ebay for example) examples are seldom supplied with a manual, nor are the parts always easy to find. Plus true SM Power Supplies are simply dangerous for the amateur, whereas the chips used in the Elektor design do all the clever stuff and the only dangerous part is the mains input to the transformer. So its far far safer.......
The supply is actually 2 x 5 amp chips, running in parallel at a high efficiency.
There are two resistors that need to be programmed to set the voltage required, as is, the power supply supplies 17 volts, not a useful voltage!!! One of mine is set for 24 volts another for 36. Both run with no problems at all.....
best wishes
Andy