Hello guys! In this episode I will show you my version of a "diy variable bench power supply". I recently upgraded it, you can watch my "12V & 19V UPS" video for more details.

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The voltmeter with 3 thick wires is not available anymore, but I found a better voltmeter/ammeter with 4 digits, you can buy it from the link below.

Old schematic (voltmeter with 3 thick wires): https://i.imgur.com/6JVLXr8.jpg
New schematic (voltmeter with 4 digits): https://i.imgur.com/HDkBf7m.jpg

Parts list:
XL4016 CC/CV 300W buck converter: https://s.click.aliexpress.com/e/_DdO...
Volt/ammeter 4 digits: https://s.click.aliexpress.com/e/_DFO...
10A bridge rectifier: https://s.click.aliexpress.com/e/_ANzaHy
4700uF 50V capacitor: https://s.click.aliexpress.com/e/_Dkr...
2A bridge rectifier: https://s.click.aliexpress.com/e/_A4fRqm
4700uF 16V capacitors: https://s.click.aliexpress.com/e/_AoslB0
10K potentiometers: https://s.click.aliexpress.com/e/_DmY...
Binding posts (similar): https://s.click.aliexpress.com/e/_AlmbUQ
Rocker switch: https://s.click.aliexpress.com/e/_9zmlZo
The plastic case model is: ABS-85B 180x160X85mm. The original link is not available anymore, but you can use a similar box.

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