What you need to build this Power supply with adjustable voltage and current
Banana Plug 4 mm - Female
on/off switch
DC-DC Step Down Converter Variable 5A
DC 100V 10A Voltmeter Ammeter Blue + Red LED Digital Volt Meter
mobile charger 5v board
ac adapter dell 19 5v 4 62a 90w
3590S-2-103L Rotary Wirewound Precision Potentiometer
https://www.youtube.com/watch?v=Hwix0T-Zx2w
5A DC to DC CC CV Step Down Module XL4015
https://www.youtube.com/watch?v=B0R20nbNKVs
DC 100V 10A Voltmeter Ammeter Blue + Red LED Digital Volt Meter
https://www.youtube.com/watch?v=4paX0AXsYC8
How to make mini power supply adjust voltage and current
https://www.youtube.com/watch?v=uGOjG4DhUfY
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