DIY Buck Converter
![How to step down DC voltage efficiently](/proxy/?url=https://content.instructables.com/FA4/B842/IT22UWUP/FA4B842IT22UWUP.jpg&filename=How to step down DC voltage efficiently)
In this Instructables, I will show you How to step down DC voltage efficiently.
for supplying power to Arduio or any other components required 5v or 3.3v.
If you use LM7805 it having poor efficiency about 30%.It also heat up.
If you use LM2576HV-ADJ it having decent efficiency up to 80%.It can also give adjustable voltage between 3-60 v by adjusting POT.
for getting clear idea MUST WATCH VIDEO GUIDANCE.
for more such video's subscribe to my channel.
Parts List
![IMG_20160905_200217.jpg](/proxy/?url=https://content.instructables.com/FLO/A2RK/IT22UWXG/FLOA2RKIT22UWXG.jpg&filename=IMG_20160905_200217.jpg)
![parts.png](/proxy/?url=https://content.instructables.com/F7O/6N94/IT22UX2D/F7O6N94IT22UX2D.png&filename=parts.png)
1xLM2576HV-ADJ
1x1000μF Capacitor:
1x100μF Capacitor:
1xPOT 10KΩ
1x100μH Inductor
1xMBR 360 or 1N5822 Schottky Diode:
Circuit Diagram
![lm2576-adj circuit.gif](/proxy/?url=https://content.instructables.com/FG1/RYUQ/IT22UWXL/FG1RYUQIT22UWXL.gif&filename=lm2576-adj circuit.gif)
![cir.png](/proxy/?url=https://content.instructables.com/F2M/1SSY/IT22UX1Y/F2M1SSYIT22UX1Y.png&filename=cir.png)
Follow this circuit.
Testing & Assembling
![breadboard.png](/proxy/?url=https://content.instructables.com/F4X/A4NM/IT22UX6R/F4XA4NMIT22UX6R.png&filename=breadboard.png)
![IMG_20160905_215651.jpg](/proxy/?url=https://content.instructables.com/FVX/71JW/IT22UXD8/FVX71JWIT22UXD8.jpg&filename=IMG_20160905_215651.jpg)
![IMG_20160905_215658.jpg](/proxy/?url=https://content.instructables.com/F0M/E67K/IT22UXDY/F0ME67KIT22UXDY.jpg&filename=IMG_20160905_215658.jpg)
![IMG_20160905_215711.jpg](/proxy/?url=https://content.instructables.com/FJT/07ZO/IT22UXEW/FJT07ZOIT22UXEW.jpg&filename=IMG_20160905_215711.jpg)
![IMG_20160905_215622.jpg](/proxy/?url=https://content.instructables.com/FKG/XOB7/IT22UXFD/FKGXOB7IT22UXFD.jpg&filename=IMG_20160905_215622.jpg)
First test the circuit on Breadboard.
then mount all components on plane PCB & solder it.
make a fix solder paths for +Ve & -Ve inputs.
thank you for watching.