Compact Regulated PSU - Power Supply Unit

I have already make a few PSU. At the beginning I always assumed that I need PSU with lots of Amps, but during few years of experimenting and building things I realized that i need small compact PSU with stabilize and good Voltage regulation and current limiter, that didn’t take to much space on my workbench.
Like in most of my project it all started with salvage components that came in my possession.Friend of mine gave my transformer 230V/16V from the old alarm system which is the main component of mine PSU.”