The remote variable resistor functions as a voltage-controlled resistor whose resistance changes based on an applied voltage.

In this tutorial we will show you how to get the variable regulated Voltage from the LM317 IC. With a small circuitry attached with LM317 we can get variable voltage up to 37v with 1.5A max current.

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By carefully selecting the resistor values, you can ensure the output voltage meets the specific requirements of your circuit. Figure caption, A potential divider (or voltage divider), circuit diagram ...

Set the variable resistor to give the lowest potential difference and record the readings on the voltmeter and milliammeter. Alter the variable resistor to increase the potential difference by 0.2 V.