9/6/2023 0 Comments Lm317 application circuitsThe below circuit is designed to take 12V (you can supply up to 24V) as input and regulate it from 1.25V to 10V. Now to make it act as a variable voltage regulator we have to set variable voltages at pin 1 which can be done by using a potentiometer in the potential divider. So, let’s look into how to use this IC as a variable voltage regulator.Īs said earlier the IC has 3 pins, in which the input voltage is supplied to pin3 (VIN) then using a pair of resistors (potential divider) we set a voltage at pin 1 (Adjust) which will decide the output voltage of the IC that is given out at pin 2 (VOUT). It has many application circuits in its datasheet, but this IC is known for being used as a variable voltage regulator. ![]() ![]() LM317 is a 3-terminal regulator IC and it is very simple to use.
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