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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.”

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