DIY Mini Lab Power Supply

Updated: Dec 12, 2020




A bench power supply is extremely useful for electronics hobbyists, but they can be expensive when purchased from the market. In this Instructable, I will show you, how to make a mini-lab power supply with a limited budget. It is a great DIY project for beginners as well as anyone interested in Electronics.


The Power Supply is based on XL4015 DC-DC buck converter module. This module can provide an adjustable output-voltage from about 1.4V, up to the input voltage (nearly) and current output from 0mA to 5A. It only requires only a DC power supply with a voltage somewhere between 12-30V.


The inspiration for this project is from Chordless Lab Power Supply


The power supply can be used for the following purposes:


1. Variable Power Supply


2. Battery Charger


3. Constant Current LED Driver


4. Solar Charger Controller


Instructables Link: https://www.instructables.com/DIY-Mini-Lab-Power-Supply/


Specifications:


1. Input voltage range:5-36VDC


2. Output voltage range:1.25-32VDC adjustable


3. Output current: 0-5A Output power: 75W


4. Output ripple: 50mV (max)


5. In-built thermal shutdown and short circuit protection



Components Used:


1. XL4015 Buck Converter ( Amazon )


2. Volt-Amp LED display ( Amazon )


3. 2 x 10k Precision Potentiometer ( Amazon )


4. 2 x Binding Posts ( Amazon )


5. DC Jack (5.5mm x 2.1mm) ( Amazon )


6. 2 x Rocker switch ( Amazon )


7. Fuse Holder ( Amazon )


8. Fuse ( Amazon )


9. Heatshrink ( Amazon )


10. 20AWG Wires ( Amazon )


11. Heatshrink Tube ( Amazon )


12. 12-30V DC Power supply ( Amazon )


Tools Used:


1. Soldering Iron ( Amazon )


2. Wire Cutter / Stripper ( Amazon )


3. 3D printer ( Amazon )


4. Hot Air Blower ( Amazon )


Schematic Diagram:

Download the Schematic Diagram:


Schematic_XL4015 Lab Power Supply_2020-1
.
Download • 418KB


3D printed Enclosure Files:




Download the .STL files from Thingiverse

453 views0 comments

 @ 2020 Open Green Energy