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Monday, July 27, 2020

How to make a variable bench power supply using LM317

In this tutorial, I will show you how to make a variable bench power supply using LM317.

If you prefer video mode or like to watch the working of the project please click here to watch it on YouTube.

For the circuit diagram and working of the circuit, please read my previous post by clicking here.

Note: You have to make a few changes to the circuit diagram. First, You have to use a 4.7K potentiometer instead of 5K Trimmer and the second one is to add a Voltmeter to the output along with all the input and output connectors as shown in the below block diagram. For better understanding please watch the video shared in the second paragraph.


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