Lm317 Application Circuit

Lm317 is a positive voltage regulator with an adjustable voltage range from 1 25 v to 37 v.

Lm317 application circuit.

Circuit diagram lm317 voltage regulator ic. In most of the applications due to irregular loads the output voltage produced has fluctuations in it which can lead to damaging loads. This voltage regulator is exceptionally easy to use and requires only two external resistors to set the output voltage. The discussed lm317 configuration is so accurate that it becomes ideally suitable for all such specialist current and voltage regulated applications.

It can also provide float operation for high voltage application. 4 lead acid battery charger circuits see 4 lm317 lead acid battery charger circuits for 6v 12v and 24v battery. Adjust voltage in steps 3v 6v 9v 12v. The ic is capable of delivering up to 1a of output current.

Lm317 is a three terminal voltage regulator ic from national semiconductors. It can also provide a float function for high voltage uses. Using lm317 and 2n3055 so easy and cheap. Few useful circuits using the voltage regulator ic lm317 is shown here.

Up to now this battery level indicator design was limited to 12 24v applications. Low voltage battery level indicator jim keith 06 11 2014. Lm317 d lm317 ncv317 voltage regulator adjustable output positive 1 5 a the lm317 is an adjustable 3 terminal positive voltage regulator capable of supplying in excess of 1 5 a over an output voltage range of 1 2 v to 37 v. 0 01 v line regulation 1 5 a output current adjustable output down to 1 25 v current limit constant with temperature 80 db ripple rejection short circuit.

Lm317 circuits projects 12 browse through a total of 12 lm317 circuits projects. In past circuits external battery charger control jim keith 11 21 2013. And in fine 1 25v to 20v. It can supply greater than 1 5 a at the output.

The lm317 ic helps in current limiting thermal overload protection and safe operating area protection. Input voltage can be up to 40v and output voltage can be adjusted from 1 2v to 37v. Lm317 is a three terminal voltage regulator ic with a high output current value of 1 5a. High quality 3a adjustable voltage regulator.

Some assorted useful lm317 application circuits from national semiconductor pdf datasheet has been discretely explained in this chapter through the relevant circuit illustrations. Lm117 lm317 n wide temperature three pin adjustable regulator 1 1 features 1 for a newer drop in alternative see the lm317 typ. Circuit operation referring to the shown circuit diagram the configuration looks pretty straightforward two lm317 ic s can be seen one configured in its standard voltage regulator mode and the. With automatic charging and full charged indicator using tl431.

It s an adjustable three terminal voltage regulator ic with a high output current value of 1 5a. The ic lm317 promises countless interesting and useful power enhancement circuits applicable in numerous fields where well dimensioned power supplies become crucially important.