Alright, a bit of background first.
A few years ago I needed a variable power supply and found one at a local shop that would do +-5v, 12v and 0-12v dc. It was about $70 if I remember right. It’s similar to this model. The one I have isn’t sold by Omnitron any longer.
Somehow I broke it along the way (it smelled like I let the smoke out) and it stopped being variable and instead put out 16v on the variable side and normal levels on the non-variable side.
Last night I had the time to take a look at it and opened the puppy up.
What I found stunned me.