How to make a Lab Bench Power Supply, with adjustable voltage and current.

JLCPCB link in new video will be:  $2 for 10 PCBs & 24 Hour Production: https://jlcpcb.com


Assalam O Alikum friend's , welcome to Simple Homemade Projects . In this video I built a Lab Bench Power Supply with circuit at home . The components for this project are :

1. PCB's ( link is given below )
2. PC cooling fan
3. Switch
4. Electric wire
5. 220 to 12 volts stepdown transformer
6. Bridge rectifier
7. 16 volt 470 uf capacitor
8. Voltmeter ammeter
9. Banana jacks
10. Alligator clips
11. MDF sheet pieces ( for making body)
12. For circuit :
LED
4.7 kilo ohm resistor
LM 317 voltage regulator
5 kilo ohm potentiometer
10 kilo ohm potentiometer
220 ohm resistor
BD139 transistor
D1047 transistor
4.7 ohm resistor
Terminal blocks


Link for circuit diagram and PCB : https://easyeda.com/editor#id=|d38fe67a66b040578601c4e94444504d|bf83954cf12347889a7a8624ba8dfa3f

Link for connection diagram :
https://drive.google.com/open?id=1Z9v...

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