I just received a neat little switch-mode power supply in the post from Banggood, the K305D.
This neat supply runs up to 30 volts output (fully adjustable) and up to 5 amps (constant voltage or constant current) with 0.01v resolution and 0.001a resolution on the blue LED displays. The unit comes complete with simple test leads, mains lead and 8-sided “operation manual”. The – connection can optionally be grounded.
The unit measures 70mm x 150mm x 210mm plus feet and buttons. It is quite light (as befits a switching supply) while maintaining a solid feel about it.
Well in 2018, mine seems to work just fine including the current limiting and taking into account that this is not an expensive supply, build quality on mine is not bad. I might’ve made the cables to the output terminals a little shorter and thicker personally but for what this supply is likely going to be used for, they should be just fine.
The unit was supplied by Banggood (MCH-K305D 30V 5A 4 Digits DC Switching Power Supply -- https://goo.gl/dZGgAx Wholesale DC Power Supply -- https://goo.gl/TDzqJU EU Warehouse -- https://goo.gl/B9YUrK )