How to Make a Power Lab Low Costs 30- 50$

what you need

1 module buck converter 12A 150W

1 DC 0-200v 10A Voltmeter Ammeter

1 Potentiometer VR 5k ohm

2 jack power

The cost to make this power supply: ~ 50-100$

Production costs in vietnam only : ~30$

and this my video