0-30V DC Regulated Power Supply DIY Kit 2mA-3A Continuously Adjustable Current Limiting Protection

Ok, it works, but due to poor quality of components (e.g. resistors 10% or worse) my item stops working when AC voltage exceeds 23V. Fortunately I found these web sites where you can find schematics and other info: https://www.qsl.net/zeet/dc_0-30v_0-3A_eng.html https://leep.tardate.com/equipment/adjustablepowersupplykit/

Is decent, despite is other model than the one showed , some missing parts like a zenner diode and the potentiometers washer and nut, will have to install and give it a try.

The product has worked for me for a while but the design is not suitable a very small heatsink for the mosfet when subjected to maximum intensity it has burned

The product itself is OK, but for assembly kits, the following documents are also required: electronic diagram, assembly and test technological instructions.