Lm317 Adjustable Voltage Regulator Tutorial

Lm317 is a positive voltage regulator with an adjustable voltage range from 1 25 v to 37 v. Back to basics ii. This voltage regulator circuit is very simple.

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The capacitor c1 used for the filtering of dc input voltage and further fed to the vin pin of the lm317 voltage regulator ic.

Lm317 adjustable voltage regulator tutorial.

Lm317 voltage regulator comparison with 78xx series of regulators. In most of the applications due to irregular loads the output voltage produced has fluctuations in it which can lead to damaging loads. Working of lm317 voltage regulator circuit. This tutorial explains everything you need to know about the lm317 adjustable regulator like for example.

It can supply greater than 1 5 a at the output. Eu 220v diy lm317 adjustable voltage power supply board learning kit with case assembling lm317 adjustable voltage power supply for your own you can get ad. 10 1 25x 1 r2 240 r2 1680ω. Lm317 adjustable regulator in this tutorial you will learn how to make an adjustable variable voltage power supply based on the lm317 regulator.

So this is how we calculate the r2 and output voltage for lm317 voltage regulator circuit. Adjustable current regulator with the lm317 lm317 datasheet. This lm317 calculator can be also be used for some other ics like lm338 or lm350. The adjustable pin is connected with the two external resistor and connected with the vout pin of the ic.

For example if the target output voltage is 10v then the r2 value is calculated as following.

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