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I wanted to know if it was possible to dynamically regulate voltage with, for example, a potentiometer which allows me to select output voltage and some kind of voltage regulator.

Suppose that I have a solar panel connected to this hypotethical voltage regulator; I want to be able to choose the output voltage of my regulator in 'real time' so that I can recharge for example batteries with different voltages.

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Output voltage and voltage regulating are two different things. The second should be done by the regulator.

This is how you can achieve the first if you're using a LM317:

With digital outputs:

enter image description here

And the potentiometer variant:

enter image description here

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  • \$\begingroup\$ Thanks for your response, I am studying your circuits since I am kind of new to this field \$\endgroup\$ – Warrior May 23 '14 at 15:52
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I strongly suggest you use a switching converter, especially for charging batteries. The LM2596 is easy to use and cheap.

LM2596 circuit LM2596

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