Dead Simple Power Supply
At work I'm quite spoilt, there is an abundance of equipment in the labs, and if I need, I can borrow something for home use. Very handy when ding something specific (like the thermocouple I used here) but it comes with a down side.
If I realise I need something, it means dropping work for a few days until I can borrow the equipment (if it's in use at work, I can't have it until it's free) and as I catch the train, it also means bringing the car in if it's too big to fit in my backpack.
When it came to powering my projects, I have a very basic dual rail Power Supply (I built one just like in in Uni, tortured it to death over the coming years by running a car amp from it in my bedroom) that I inherited from a guy-who-got-it-from-a-guy-from-a-garage-sale deal.
The updside: It's got dual isolated rails, 1.25V to 15V range and 'up to' 1A output.
The downside: It's so old the pots are scratchy, so setting an output voltage is a chore, and there isn't any current limit. And you need to whip out your multimeter to set the voltage / measure the current in use.
So I got cracking on this: